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210 KiB
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Theme: Default
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Description: Original highlight.js style
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Maintainer: @highlightjs/core-team
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License: see project LICENSE
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Touched: 2021
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rel=tag>Mybatis</a><span class=tag-list-count>13</span><li class=tag-list-item><a class=tag-list-link href=/tags/Mysql/ rel=tag>Mysql</a><span class=tag-list-count>13</span><li class=tag-list-item><a class=tag-list-link href=/tags/NameServer/ rel=tag>NameServer</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/PHP/ rel=tag>PHP</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/Preorder-Traversal/ rel=tag>Preorder Traversal</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Print-FooBar-Alternately/ rel=tag>Print FooBar Alternately</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/RPC/ rel=tag>RPC</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/Redis/ rel=tag>Redis</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/Remove-Duplicates-from-Sorted-List/ rel=tag>Remove Duplicates from Sorted List</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/RocketMQ/ rel=tag>RocketMQ</a><span class=tag-list-count>9</span><li class=tag-list-item><a class=tag-list-link href=/tags/Rotate-Image/ rel=tag>Rotate Image</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Rust/ rel=tag>Rust</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/SPI/ rel=tag>SPI</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/Servlet/ rel=tag>Servlet</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Sharding-Jdbc/ rel=tag>Sharding-Jdbc</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/Shift-2D-Grid/ rel=tag>Shift 2D Grid</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Singleton/ rel=tag>Singleton</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Spring/ rel=tag>Spring</a><span class=tag-list-count>7</span><li class=tag-list-item><a class=tag-list-link href=/tags/Spring-Event/ rel=tag>Spring Event</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/SpringBoot/ rel=tag>SpringBoot</a><span class=tag-list-count>22</span><li class=tag-list-item><a class=tag-list-link href=/tags/Sql%E6%B3%A8%E5%85%A5/ rel=tag>Sql注入</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Stream/ rel=tag>Stream</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Synchronized/ rel=tag>Synchronized</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/Thread-dump/ rel=tag>Thread dump</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/ThreadLocal/ rel=tag>ThreadLocal</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/ThreadPool/ rel=tag>ThreadPool</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Tomcat/ rel=tag>Tomcat</a><span class=tag-list-count>13</span><li class=tag-list-item><a class=tag-list-link href=/tags/Trapping-Rain-Water/ rel=tag>Trapping Rain Water</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/WeakReference/ rel=tag>WeakReference</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Web/ rel=tag>Web</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Webhook/ rel=tag>Webhook</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Windows/ rel=tag>Windows</a><span class=tag-list-count>5</span><li class=tag-list-item><a class=tag-list-link href=/tags/WordPress/ rel=tag>WordPress</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/aqs/ rel=tag>aqs</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/await/ rel=tag>await</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/bloom-filter/ rel=tag>bloom filter</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/c/ rel=tag>c++</a><span class=tag-list-count>14</span><li class=tag-list-item><a class=tag-list-link href=/tags/cglib/ rel=tag>cglib</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/cgroup/ rel=tag>cgroup</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/cluster/ rel=tag>cluster</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/condition/ rel=tag>condition</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/dnsmasq/ rel=tag>dnsmasq</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/docker/ rel=tag>docker</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/dp/ rel=tag>dp</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/dubbo/ rel=tag>dubbo</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/echo/ rel=tag>echo</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/environment/ rel=tag>environment</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/gap-lock/ rel=tag>gap lock</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/gc/ rel=tag>gc</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/git/ rel=tag>git</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/grep/ rel=tag>grep</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/hadoop/ rel=tag>hadoop</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/headscale/ rel=tag>headscale</a><span class=tag-list-count>6</span><li class=tag-list-item><a class=tag-list-link href=/tags/hexo/ rel=tag>hexo</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/http/ rel=tag>http</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/icu4c/ rel=tag>icu4c</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/im/ rel=tag>im</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/is-not-null/ rel=tag>is not null</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/is-null/ rel=tag>is null</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/j-u-c/ rel=tag>j.u.c</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/java/ rel=tag>java</a><span class=tag-list-count>54</span><li class=tag-list-item><a class=tag-list-link href=/tags/jvm/ rel=tag>jvm</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/leetcode/ rel=tag>leetcode</a><span class=tag-list-count>44</span><li class=tag-list-item><a class=tag-list-link href=/tags/leetcode-155/ rel=tag>leetcode 155</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/linked-list/ rel=tag>linked list</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/linux/ rel=tag>linux</a><span class=tag-list-count>7</span><li class=tag-list-item><a class=tag-list-link href=/tags/lock/ rel=tag>lock</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/mac/ rel=tag>mac</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/mfc/ rel=tag>mfc</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/min-stack/ rel=tag>min stack</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/mq/ rel=tag>mq</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/mvcc/ rel=tag>mvcc</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/mysql/ rel=tag>mysql</a><span class=tag-list-count>9</span><li class=tag-list-item><a class=tag-list-link href=/tags/namespace/ rel=tag>namespace</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/nas/ rel=tag>nas</a><span class=tag-list-count>6</span><li class=tag-list-item><a class=tag-list-link href=/tags/next-key-lock/ rel=tag>next-key lock</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/nginx/ rel=tag>nginx</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/nullsfirst/ rel=tag>nullsfirst</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/openresty/ rel=tag>openresty</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/openwrt/ rel=tag>openwrt</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/php/ rel=tag>php</a><span class=tag-list-count>6</span><li class=tag-list-item><a class=tag-list-link href=/tags/powershell/ rel=tag>powershell</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/procedure/ rel=tag>procedure</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/python/ rel=tag>python</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/read-view/ rel=tag>read view</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/redis/ rel=tag>redis</a><span class=tag-list-count>12</span><li class=tag-list-item><a class=tag-list-link href=/tags/scp/ rel=tag>scp</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/signal/ rel=tag>signal</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/sort/ rel=tag>sort</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/spark/ rel=tag>spark</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/ssh/ rel=tag>ssh</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/stack/ rel=tag>stack</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/stream/ rel=tag>stream</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/string/ rel=tag>string</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/swoole/ rel=tag>swoole</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/top/ rel=tag>top</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/trace/ rel=tag>trace</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/uname/ rel=tag>uname</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/unlock/ rel=tag>unlock</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/utf8/ rel=tag>utf8</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/utf8mb4/ rel=tag>utf8mb4</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/utf8mb4-0900-ai-ci/ rel=tag>utf8mb4_0900_ai_ci</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/utf8mb4-general-ci/ rel=tag>utf8mb4_general_ci</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/utf8mb4-unicode-ci/ rel=tag>utf8mb4_unicode_ci</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/value/ rel=tag>value</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/websocket/ rel=tag>websocket</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/windows/ rel=tag>windows</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/wsl/ rel=tag>wsl</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/zookeeper/ rel=tag>zookeeper</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/zsh/ rel=tag>zsh</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%89%E9%98%B6%E6%AE%B5%E6%8F%90%E4%BA%A4/ rel=tag>三阶段提交</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%8D%E5%8F%AF%E5%8F%98%E5%BC%95%E7%94%A8/ rel=tag>不可变引用</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%9C%E4%BA%AC%E5%A5%A5%E8%BF%90%E4%BC%9A/ rel=tag>东京奥运会</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%A4%E9%98%B6%E6%AE%B5%E6%8F%90%E4%BA%A4/ rel=tag>两阶段提交</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%AD%E5%B1%B1%E8%B7%AF/ rel=tag>中山路</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%AD%E5%BA%8F/ rel=tag>中序</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%AD%E9%97%B4%E4%BB%B6/ rel=tag>中间件</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%BE%E9%87%8D/ rel=tag>举重</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B9%92%E4%B9%93%E7%90%83/ rel=tag>乒乓球</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BA%8B%E5%8A%A1/ rel=tag>事务</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BA%8C%E5%8F%89%E6%A0%91/ rel=tag>二叉树</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BA%91%E6%9C%8D%E5%8A%A1%E5%99%A8/ rel=tag>云服务器</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BA%92%E6%96%A5%E9%94%81/ rel=tag>互斥锁</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BB%A3%E7%A0%81%E9%A2%98%E8%A7%A3/ rel=tag>代码题解</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BF%AE%E7%94%B5%E8%84%91%E7%9A%84/ rel=tag>修电脑的</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%81%8F%E5%90%91%E9%94%81/ rel=tag>偏向锁</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%81%A5%E5%BA%B7%E7%A0%81/ rel=tag>健康码</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%85%AC%E4%BA%A4/ rel=tag>公交</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%85%AC%E4%BA%A4%E8%BD%A6/ rel=tag>公交车</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%86%85%E5%AD%98%E5%88%86%E5%B8%83/ rel=tag>内存分布</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%86%85%E5%AD%98%E6%B3%84%E6%BC%8F/ rel=tag>内存泄漏</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%87%86%E5%A4%87/ rel=tag>准备</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%87%8F%E8%82%A5/ rel=tag>减肥</a><span class=tag-list-count>7</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%88%86%E5%B8%83%E5%BC%8F%E4%BA%8B%E5%8A%A1/ rel=tag>分布式事务</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%88%86%E5%B8%83%E5%BC%8F%E9%94%81/ rel=tag>分布式锁</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%88%87%E7%89%87/ rel=tag>切片</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%88%9D%E5%A7%8B%E5%8C%96/ rel=tag>初始化</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%89%8A%E5%B3%B0%E5%A1%AB%E8%B0%B7/ rel=tag>削峰填谷</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%89%8D%E5%BA%8F/ rel=tag>前序</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8A%A0%E5%A1%9E/ rel=tag>加塞</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8A%A0%E8%BD%BD/ rel=tag>加载</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8D%95%E4%BE%8B/ rel=tag>单例</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8D%9A%E5%AE%A2%EF%BC%8C%E6%96%87%E7%AB%A0/ rel=tag>博客，文章</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8E%A6%E9%97%A8/ rel=tag>厦门</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8F%8C%E4%BA%B2%E5%A7%94%E6%B4%BE/ rel=tag>双亲委派</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8F%91%E8%A1%8C%E7%89%88/ rel=tag>发行版</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8F%A3%E7%BD%A9/ rel=tag>口罩</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8F%AF%E5%8F%98%E5%BC%95%E7%94%A8/ rel=tag>可变引用</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%90%90%E6%A7%BD/ rel=tag>吐槽</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%9B%A4%E7%89%A9%E8%B5%84/ rel=tag>囤物资</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6/ rel=tag>垃圾回收</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%9F%BA%E7%A1%80%E8%AE%BE%E6%96%BD/ rel=tag>基础设施</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%A4%A7%E6%89%AB%E9%99%A4/ rel=tag>大扫除</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%AD%97%E7%AC%A6%E9%9B%86/ rel=tag>字符集</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%AE%89%E5%85%A8/ rel=tag>安全</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%AE%B9%E9%94%99%E6%9C%BA%E5%88%B6/ rel=tag>容错机制</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%AF%84%E7%94%9F%E8%99%AB/ rel=tag>寄生虫</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B0%84%E5%87%BB/ rel=tag>射击</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B0%8F%E6%8A%80%E5%B7%A7/ rel=tag>小技巧</a><span class=tag-list-count>10</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B1%80%E5%8F%A3%E8%A1%97/ rel=tag>局口街</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B7%A5%E5%85%B7/ rel=tag>工具</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B8%83%E9%9A%86%E8%BF%87%E6%BB%A4%E5%99%A8/ rel=tag>布隆过滤器</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B9%B2%E6%B4%BB/ rel=tag>干活</a><span class=tag-list-count>6</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B9%B4%E4%B8%AD%E6%80%BB%E7%BB%93/ rel=tag>年中总结</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B9%B4%E7%BB%88%E6%80%BB%E7%BB%93/ rel=tag>年终总结</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B9%B6%E5%8F%91/ rel=tag>并发</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B9%B8%E7%A6%8F%E4%BA%86%E5%90%97/ rel=tag>幸福了吗</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%B9%BB%E8%AF%BB/ rel=tag>幻读</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%BA%94%E7%94%A8/ rel=tag>应用</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%BC%80%E8%BD%A6/ rel=tag>开车</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%BC%B1%E5%BC%95%E7%94%A8/ rel=tag>弱引用</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%BD%B1%E8%AF%84/ rel=tag>影评</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%81%B6%E6%84%8F%E7%9B%97%E5%88%B7/ rel=tag>恶意盗刷</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%89%80%E6%9C%89%E6%9D%83/ rel=tag>所有权</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%89%93%E5%8D%A1/ rel=tag>打卡</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%89%B6%E6%A2%AF/ rel=tag>扶梯</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%8A%80%E5%B7%A7/ rel=tag>技巧</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%8A%80%E6%9C%AF/ rel=tag>技术</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%8A%98%E8%85%BE/ rel=tag>折腾</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%8B%96%E6%9B%B4/ rel=tag>拖更</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%8D%A2%E8%BD%A6%E7%89%8C/ rel=tag>换车牌</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%8E%92%E5%BA%8F/ rel=tag>排序</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%8E%A5%E9%9B%A8%E6%B0%B4/ rel=tag>接雨水</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%95%B0%E6%8D%AE%E6%BA%90%E5%8A%A8%E6%80%81%E5%88%87%E6%8D%A2/ rel=tag>数据源动态切换</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84/ rel=tag>数据结构</a><span class=tag-list-count>11</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%96%B0%E8%AF%AD%E8%A8%80/ rel=tag>新语言</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%97%85%E6%B8%B8/ rel=tag>旅游</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%97%A5%E5%BF%97/ rel=tag>日志</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%9B%BE%E5%8E%9D%E5%9E%B5/ rel=tag>曾厝垵</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%9C%80%E5%B0%8F%E6%A0%88/ rel=tag>最小栈</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%9D%80%E4%BA%BA%E8%AF%9B%E5%BF%83/ rel=tag>杀人诛心</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%9D%AD%E5%B7%9E/ rel=tag>杭州</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%A0%87%E8%AE%B0%E6%95%B4%E7%90%86/ rel=tag>标记整理</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%A4%8D%E7%89%A9%E5%9B%AD/ rel=tag>植物园</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%B2%99%E8%8C%B6%E9%9D%A2/ rel=tag>沙茶面</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%B3%A8%E8%A7%A3/ rel=tag>注解</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%B5%B7%E8%9B%8E%E7%85%8E/ rel=tag>海蛎煎</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%B6%88%E6%81%AF%E9%98%9F%E5%88%97/ rel=tag>消息队列</a><span class=tag-list-count>9</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%B7%98%E6%B1%B0%E7%AD%96%E7%95%A5/ rel=tag>淘汰策略</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%B7%B1%E5%BA%A6%E5%AD%A6%E4%B9%A0/ rel=tag>深度学习</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%BA%90%E7%A0%81/ rel=tag>源码</a><span class=tag-list-count>11</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E6%BA%90%E7%A0%81%E8%A7%A3%E6%9E%90/ rel=tag>源码解析</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%94%9F%E6%B4%BB/ rel=tag>生活</a><span class=tag-list-count>42</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%94%B5%E7%93%B6%E8%BD%A6/ rel=tag>电瓶车</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%96%AB%E6%83%85/ rel=tag>疫情</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%9C%8B%E4%B9%A6/ rel=tag>看书</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%9C%8B%E5%89%A7/ rel=tag>看剧</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%9F%A9%E9%98%B5/ rel=tag>矩阵</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%AB%AF%E5%8F%A3%E8%BD%AC%E5%8F%91/ rel=tag>端口转发</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%AE%97%E6%B3%95/ rel=tag>算法</a><span class=tag-list-count>5</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%B1%BB%E5%8A%A0%E8%BD%BD/ rel=tag>类加载</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%B3%9F%E5%BF%83%E4%BA%8B/ rel=tag>糟心事</a><span class=tag-list-count>5</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%B4%A2%E5%BC%95/ rel=tag>索引</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%BA%BF%E7%A8%8B%E6%B1%A0/ rel=tag>线程池</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%BC%93%E5%AD%98/ rel=tag>缓存</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%BC%93%E5%AD%98%E5%87%BB%E7%A9%BF/ rel=tag>缓存击穿</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%BC%93%E5%AD%98%E7%A9%BF%E9%80%8F/ rel=tag>缓存穿透</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%BC%93%E5%AD%98%E9%9B%AA%E5%B4%A9/ rel=tag>缓存雪崩</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%BC%96%E7%A0%81/ rel=tag>编码</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%BE%8E%E5%9B%BD/ rel=tag>美国</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%80%81%E7%94%B5%E8%84%91/ rel=tag>老电脑</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%87%AA%E5%8A%A8%E8%A3%85%E9%85%8D/ rel=tag>自动装配</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%87%AA%E6%97%8B/ rel=tag>自旋</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%87%AA%E9%80%82%E5%BA%94%E6%8B%93%E5%B1%95/ rel=tag>自适应拓展</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%A3%85%E7%94%B5%E8%84%91/ rel=tag>装电脑</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%A7%84%E5%88%99/ rel=tag>规则</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%A7%A3%E6%9E%90/ rel=tag>解析</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F/ rel=tag>设计模式</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%AF%BB%E4%B9%A6/ rel=tag>读书</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%AF%BB%E5%90%8E%E6%84%9F/ rel=tag>读后感</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%B4%9F%E8%BD%BD%E5%9D%87%E8%A1%A1/ rel=tag>负载均衡</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%B6%B3%E7%90%83/ rel=tag>足球</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%B7%91%E6%AD%A5/ rel=tag>跑步</a><span class=tag-list-count>7</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%B7%AF%E6%94%BF%E8%A7%84%E5%88%92/ rel=tag>路政规划</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%B7%AF%E7%94%B1%E5%99%A8/ rel=tag>路由器</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%B7%B3%E6%B0%B4/ rel=tag>跳水</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%B8%A9%E8%B8%8F/ rel=tag>踩踏</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%BD%AC%E4%B9%89/ rel=tag>转义</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%BD%BB%E9%87%8F%E7%BA%A7%E9%94%81/ rel=tag>轻量级锁</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%BF%87%E6%9C%9F%E7%AD%96%E7%95%A5/ rel=tag>过期策略</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%BF%90%E5%8A%A8/ rel=tag>运动</a><span class=tag-list-count>9</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E8%BF%9C%E7%A8%8B%E5%8A%9E%E5%85%AC/ rel=tag>远程办公</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E9%80%92%E5%BD%92/ rel=tag>递归</a><span class=tag-list-count>1</span><li 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href=/tags/%E9%BC%93%E6%B5%AA%E5%B1%BF/ rel=tag>鼓浪屿</a><span class=tag-list-count>1</span></ul></canvas></div></div></div></div></div><div class="sidebar-inner sidebar-blogroll"><div class="links-of-blogroll animated"><div class=links-of-blogroll-title><i class="fa fa-globe fa-fw"></i> 链接</div><ul class=links-of-blogroll-list><li class=links-of-blogroll-item><a href=https://covermusic.cn/ rel=noopener target=_blank title=https://covermusic.cn>69伙伴</a></ul></div></div></aside></div><div class="main-inner index posts-expand"><div class=post-block><article class=post-content itemscope itemtype=http://schema.org/Article><link href=https://nicksxs.me/2023/01/22/Headscale%E5%88%9D%E4%BD%93%E9%AA%8C%E4%BB%A5%E5%8F%8A%E8%B8%A9%E5%9D%91%E8%AE%B0/ itemprop=mainEntityOfPage><span hidden itemprop=author itemscope itemtype=http://schema.org/Person><meta content=/uploads/avatar.jpg itemprop=image><meta content=Nicksxs itemprop=name></span><span hidden itemprop=publisher itemscope itemtype=http://schema.org/Organization><meta content="Nicksxs's Blog" itemprop=name><meta content="learn from zero,技术博客，Nicksxs，史学森" itemprop=description></span><span hidden itemprop=post itemscope itemtype=http://schema.org/CreativeWork><meta content="undefined | Nicksxs's Blog" itemprop=name><meta itemprop=description></span><header class=post-header><h2 itemprop="name headline" class=post-title><a class=post-title-link href=/2023/01/22/Headscale%E5%88%9D%E4%BD%93%E9%AA%8C%E4%BB%A5%E5%8F%8A%E8%B8%A9%E5%9D%91%E8%AE%B0/ itemprop=url>Headscale初体验以及踩坑记</a></h2><div class=post-meta-container><div class=post-meta><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar"></i> </span><span class=post-meta-item-text>发表于</span> <time itemprop="dateCreated datePublished" title="创建时间：2023-01-22 21:14:21" datetime=2023-01-22T21:14:21+08:00>2023-01-22</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-folder"></i> </span><span class=post-meta-item-text>分类于</span> <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/headscale/ itemprop=url rel=index><span itemprop=name>headscale</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title=Headscale初体验以及踩坑记 id=/2023/01/22/Headscale%E5%88%9D%E4%BD%93%E9%AA%8C%E4%BB%A5%E5%8F%8A%E8%B8%A9%E5%9D%91%E8%AE%B0/ title=阅读次数><span class=post-meta-item-icon><i class="far fa-eye"></i> </span><span class=post-meta-item-text>阅读次数：</span> <span class=leancloud-visitors-count></span> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-comment"></i> </span><span class=post-meta-item-text>Disqus：</span> <a href=/2023/01/22/Headscale%E5%88%9D%E4%BD%93%E9%AA%8C%E4%BB%A5%E5%8F%8A%E8%B8%A9%E5%9D%91%E8%AE%B0/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2023/01/22/Headscale初体验以及踩坑记/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>最近或者说很久以前就想着能够把几个散装服务器以及家里的网络连起来，譬如一些remote desktop的访问，之前搞了下frp，因为家里电脑没怎么注意安全性就被搞了一下，所以还是想用相对更安全的方式，比如限定ip和端口进行访问，但是感觉ip也不固定就比较难搞，后来看到了 <code>Tailscale</code> 和 <code>Headscale</code> 的方式，就想着试试看，没想到一开始就踩了几个比较莫名其妙的坑。<br>可以按<a href=https://github.com/juanfont/headscale/blob/main/docs/running-headscale-linux.md rel=noopener target=_blank>官方文档</a>去搭建，也可以在网上找一些其他人搭建的教程。我碰到的主要是关于配置文件的问题<h3 id=第一个问题><a class=headerlink href=#第一个问题 title=第一个问题></a>第一个问题</h3><figure class="highlight shell"><table><tr><td class=gutter><pre><span class=line>1</span><br></pre><td class=code><pre><span class=line>Error initializing error="failed to read or create private key: failed to save private key to disk: open /etc/headscale/private.key: read-only file system"</span><br></pre></table></figure><p>其实一开始看到这个我都有点懵了，咋回事呢，<code>read-only file system</code>一般有可能是文件系统出问题了，不可写入，需要重启或者修改挂载方式，被这个错误的错误日志给误导了，后面才知道是配置文件，在另一个教程中也有个类似的回复，一开始没注意，其实就是同一个问题。<br>默认的配置文件是这样的<figure class="highlight yaml"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br><span class=line>21</span><br><span class=line>22</span><br><span class=line>23</span><br><span class=line>24</span><br><span class=line>25</span><br><span class=line>26</span><br><span class=line>27</span><br><span 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class=line>254</span><br><span class=line>255</span><br><span class=line>256</span><br><span class=line>257</span><br><span class=line>258</span><br><span class=line>259</span><br><span class=line>260</span><br><span class=line>261</span><br><span class=line>262</span><br><span class=line>263</span><br><span class=line>264</span><br><span class=line>265</span><br><span class=line>266</span><br><span class=line>267</span><br><span class=line>268</span><br><span class=line>269</span><br><span class=line>270</span><br><span class=line>271</span><br><span class=line>272</span><br><span class=line>273</span><br><span class=line>274</span><br><span class=line>275</span><br><span class=line>276</span><br><span class=line>277</span><br><span class=line>278</span><br><span class=line>279</span><br><span class=line>280</span><br><span class=line>281</span><br><span class=line>282</span><br><span class=line>283</span><br><span class=line>284</span><br><span class=line>285</span><br><span class=line>286</span><br><span class=line>287</span><br><span class=line>288</span><br><span class=line>289</span><br><span class=line>290</span><br><span class=line>291</span><br><span class=line>292</span><br><span class=line>293</span><br><span class=line>294</span><br><span class=line>295</span><br><span class=line>296</span><br><span class=line>297</span><br><span class=line>298</span><br><span class=line>299</span><br><span class=line>300</span><br><span class=line>301</span><br><span class=line>302</span><br><span class=line>303</span><br><span class=line>304</span><br><span class=line>305</span><br><span class=line>306</span><br><span class=line>307</span><br><span class=line>308</span><br><span class=line>309</span><br><span class=line>310</span><br><span class=line>311</span><br><span class=line>312</span><br><span class=line>313</span><br><span class=line>314</span><br><span class=line>315</span><br><span class=line>316</span><br><span class=line>317</span><br><span class=line>318</span><br><span class=line>319</span><br><span class=line>320</span><br><span class=line>321</span><br><span class=line>322</span><br></pre><td class=code><pre><span class=line><span class=meta>---</span></span><br><span class=line><span class=comment># headscale will look for a configuration file named `config.yaml` (or `config.json`) in the following order:</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># - `/etc/headscale`</span></span><br><span class=line><span class=comment># - `~/.headscale`</span></span><br><span class=line><span class=comment># - current working directory</span></span><br><span class=line></span><br><span class=line><span class=comment># The url clients will connect to.</span></span><br><span class=line><span class=comment># Typically this will be a domain like:</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># https://myheadscale.example.com:443</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=attr>server_url:</span> <span class=string>http://127.0.0.1:8080</span></span><br><span class=line></span><br><span class=line><span class=comment># Address to listen to / bind to on the server</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># For production:</span></span><br><span class=line><span class=comment># listen_addr: 0.0.0.0:8080</span></span><br><span class=line><span class=attr>listen_addr:</span> <span class=number>127.0</span><span class=number>.0</span><span class=number>.1</span><span class=string>:8080</span></span><br><span class=line></span><br><span class=line><span class=comment># Address to listen to /metrics, you may want</span></span><br><span class=line><span class=comment># to keep this endpoint private to your internal</span></span><br><span class=line><span class=comment># network</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=attr>metrics_listen_addr:</span> <span class=number>127.0</span><span class=number>.0</span><span class=number>.1</span><span class=string>:9090</span></span><br><span class=line></span><br><span class=line><span class=comment># Address to listen for gRPC.</span></span><br><span class=line><span class=comment># gRPC is used for controlling a headscale server</span></span><br><span class=line><span class=comment># remotely with the CLI</span></span><br><span class=line><span class=comment># <span class=doctag>Note:</span> Remote access _only_ works if you have</span></span><br><span class=line><span class=comment># valid certificates.</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># For production:</span></span><br><span class=line><span class=comment># grpc_listen_addr: 0.0.0.0:50443</span></span><br><span class=line><span class=attr>grpc_listen_addr:</span> <span class=number>127.0</span><span class=number>.0</span><span class=number>.1</span><span class=string>:50443</span></span><br><span class=line></span><br><span class=line><span class=comment># Allow the gRPC admin interface to run in INSECURE</span></span><br><span class=line><span class=comment># mode. This is not recommended as the traffic will</span></span><br><span class=line><span class=comment># be unencrypted. Only enable if you know what you</span></span><br><span class=line><span class=comment># are doing.</span></span><br><span class=line><span class=attr>grpc_allow_insecure:</span> <span class=literal>false</span></span><br><span class=line></span><br><span class=line><span class=comment># Private key used to encrypt the traffic between headscale</span></span><br><span class=line><span class=comment># and Tailscale clients.</span></span><br><span class=line><span class=comment># The private key file will be autogenerated if it's missing.</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># For production:</span></span><br><span class=line><span class=comment># /var/lib/headscale/private.key</span></span><br><span class=line><span class=attr>private_key_path:</span> <span class=string>./private.key</span></span><br><span class=line></span><br><span class=line><span class=comment># The Noise section includes specific configuration for the</span></span><br><span class=line><span class=comment># TS2021 Noise protocol</span></span><br><span class=line><span class=attr>noise:</span></span><br><span class=line> <span class=comment># The Noise private key is used to encrypt the</span></span><br><span class=line> <span class=comment># traffic between headscale and Tailscale clients when</span></span><br><span class=line> <span class=comment># using the new Noise-based protocol. It must be different</span></span><br><span class=line> <span class=comment># from the legacy private key.</span></span><br><span class=line> <span class=comment>#</span></span><br><span class=line> <span class=comment># For production:</span></span><br><span class=line> <span class=comment># private_key_path: /var/lib/headscale/noise_private.key</span></span><br><span class=line> <span class=attr>private_key_path:</span> <span class=string>./noise_private.key</span></span><br><span class=line></span><br><span class=line><span class=comment># List of IP prefixes to allocate tailaddresses from.</span></span><br><span class=line><span class=comment># Each prefix consists of either an IPv4 or IPv6 address,</span></span><br><span class=line><span class=comment># and the associated prefix length, delimited by a slash.</span></span><br><span class=line><span class=comment># While this looks like it can take arbitrary values, it</span></span><br><span class=line><span class=comment># needs to be within IP ranges supported by the Tailscale</span></span><br><span class=line><span class=comment># client.</span></span><br><span class=line><span class=comment># IPv6: https://github.com/tailscale/tailscale/blob/22ebb25e833264f58d7c3f534a8b166894a89536/net/tsaddr/tsaddr.go#LL81C52-L81C71</span></span><br><span class=line><span class=comment># IPv4: https://github.com/tailscale/tailscale/blob/22ebb25e833264f58d7c3f534a8b166894a89536/net/tsaddr/tsaddr.go#L33</span></span><br><span class=line><span class=attr>ip_prefixes:</span></span><br><span class=line> <span class=bullet>-</span> <span class=string>fd7a:115c:a1e0::/48</span></span><br><span class=line> <span class=bullet>-</span> <span class=number>100.64</span><span class=number>.0</span><span class=number>.0</span><span class=string>/10</span></span><br><span class=line></span><br><span class=line><span class=comment># DERP is a relay system that Tailscale uses when a direct</span></span><br><span class=line><span class=comment># connection cannot be established.</span></span><br><span class=line><span class=comment># https://tailscale.com/blog/how-tailscale-works/#encrypted-tcp-relays-derp</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># headscale needs a list of DERP servers that can be presented</span></span><br><span class=line><span class=comment># to the clients.</span></span><br><span class=line><span class=attr>derp:</span></span><br><span class=line> <span class=attr>server:</span></span><br><span class=line> <span class=comment># If enabled, runs the embedded DERP server and merges it into the rest of the DERP config</span></span><br><span class=line> <span class=comment># The Headscale server_url defined above MUST be using https, DERP requires TLS to be in place</span></span><br><span class=line> <span class=attr>enabled:</span> <span class=literal>false</span></span><br><span class=line></span><br><span class=line> <span class=comment># Region ID to use for the embedded DERP server.</span></span><br><span class=line> <span class=comment># The local DERP prevails if the region ID collides with other region ID coming from</span></span><br><span class=line> <span class=comment># the regular DERP config.</span></span><br><span class=line> <span class=attr>region_id:</span> <span class=number>999</span></span><br><span class=line></span><br><span class=line> <span class=comment># Region code and name are displayed in the Tailscale UI to identify a DERP region</span></span><br><span class=line> <span class=attr>region_code:</span> <span class=string>"headscale"</span></span><br><span class=line> <span class=attr>region_name:</span> <span class=string>"Headscale Embedded DERP"</span></span><br><span class=line></span><br><span class=line> <span class=comment># Listens over UDP at the configured address for STUN connections - to help with NAT traversal.</span></span><br><span class=line> <span class=comment># When the embedded DERP server is enabled stun_listen_addr MUST be defined.</span></span><br><span class=line> <span class=comment>#</span></span><br><span class=line> <span class=comment># For more details on how this works, check this great article: https://tailscale.com/blog/how-tailscale-works/</span></span><br><span class=line> <span class=attr>stun_listen_addr:</span> <span class=string>"0.0.0.0:3478"</span></span><br><span class=line></span><br><span class=line> <span class=comment># List of externally available DERP maps encoded in JSON</span></span><br><span class=line> <span class=attr>urls:</span></span><br><span class=line> <span class=bullet>-</span> <span class=string>https://controlplane.tailscale.com/derpmap/default</span></span><br><span class=line></span><br><span class=line> <span class=comment># Locally available DERP map files encoded in YAML</span></span><br><span class=line> <span class=comment>#</span></span><br><span class=line> <span class=comment># This option is mostly interesting for people hosting</span></span><br><span class=line> <span class=comment># their own DERP servers:</span></span><br><span class=line> <span class=comment># https://tailscale.com/kb/1118/custom-derp-servers/</span></span><br><span class=line> <span class=comment>#</span></span><br><span class=line> <span class=comment># paths:</span></span><br><span class=line> <span class=comment># - /etc/headscale/derp-example.yaml</span></span><br><span class=line> <span class=attr>paths:</span> []</span><br><span class=line></span><br><span class=line> <span class=comment># If enabled, a worker will be set up to periodically</span></span><br><span class=line> <span class=comment># refresh the given sources and update the derpmap</span></span><br><span class=line> <span class=comment># will be set up.</span></span><br><span class=line> <span class=attr>auto_update_enabled:</span> <span class=literal>true</span></span><br><span class=line></span><br><span class=line> <span class=comment># How often should we check for DERP updates?</span></span><br><span class=line> <span class=attr>update_frequency:</span> <span class=string>24h</span></span><br><span class=line></span><br><span class=line><span class=comment># Disables the automatic check for headscale updates on startup</span></span><br><span class=line><span class=attr>disable_check_updates:</span> <span class=literal>false</span></span><br><span class=line></span><br><span class=line><span class=comment># Time before an inactive ephemeral node is deleted?</span></span><br><span class=line><span class=attr>ephemeral_node_inactivity_timeout:</span> <span class=string>30m</span></span><br><span class=line></span><br><span class=line><span class=comment># Period to check for node updates within the tailnet. A value too low will severely affect</span></span><br><span class=line><span class=comment># CPU consumption of Headscale. A value too high (over 60s) will cause problems</span></span><br><span class=line><span class=comment># for the nodes, as they won't get updates or keep alive messages frequently enough.</span></span><br><span class=line><span class=comment># In case of doubts, do not touch the default 10s.</span></span><br><span class=line><span class=attr>node_update_check_interval:</span> <span class=string>10s</span></span><br><span class=line></span><br><span class=line><span class=comment># SQLite config</span></span><br><span class=line><span class=attr>db_type:</span> <span class=string>sqlite3</span></span><br><span class=line></span><br><span class=line><span class=comment># For production:</span></span><br><span class=line><span class=comment># db_path: /var/lib/headscale/db.sqlite</span></span><br><span class=line><span class=attr>db_path:</span> <span class=string>./db.sqlite</span></span><br><span class=line></span><br><span class=line><span class=comment># # Postgres config</span></span><br><span class=line><span class=comment># If using a Unix socket to connect to Postgres, set the socket path in the 'host' field and leave 'port' blank.</span></span><br><span class=line><span class=comment># db_type: postgres</span></span><br><span class=line><span class=comment># db_host: localhost</span></span><br><span class=line><span class=comment># db_port: 5432</span></span><br><span class=line><span class=comment># db_name: headscale</span></span><br><span class=line><span class=comment># db_user: foo</span></span><br><span class=line><span class=comment># db_pass: bar</span></span><br><span class=line></span><br><span class=line><span class=comment># If other 'sslmode' is required instead of 'require(true)' and 'disabled(false)', set the 'sslmode' you need</span></span><br><span class=line><span class=comment># in the 'db_ssl' field. Refers to https://www.postgresql.org/docs/current/libpq-ssl.html Table 34.1.</span></span><br><span class=line><span class=comment># db_ssl: false</span></span><br><span class=line></span><br><span class=line><span class=comment>### TLS configuration</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment>## Let's encrypt / ACME</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># headscale supports automatically requesting and setting up</span></span><br><span class=line><span class=comment># TLS for a domain with Let's Encrypt.</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># URL to ACME directory</span></span><br><span class=line><span class=attr>acme_url:</span> <span class=string>https://acme-v02.api.letsencrypt.org/directory</span></span><br><span class=line></span><br><span class=line><span class=comment># Email to register with ACME provider</span></span><br><span class=line><span class=attr>acme_email:</span> <span class=string>""</span></span><br><span class=line></span><br><span class=line><span class=comment># Domain name to request a TLS certificate for:</span></span><br><span class=line><span class=attr>tls_letsencrypt_hostname:</span> <span class=string>""</span></span><br><span class=line></span><br><span class=line><span class=comment># Path to store certificates and metadata needed by</span></span><br><span class=line><span class=comment># letsencrypt</span></span><br><span class=line><span class=comment># For production:</span></span><br><span class=line><span class=comment># tls_letsencrypt_cache_dir: /var/lib/headscale/cache</span></span><br><span class=line><span class=attr>tls_letsencrypt_cache_dir:</span> <span class=string>./cache</span></span><br><span class=line></span><br><span class=line><span class=comment># Type of ACME challenge to use, currently supported types:</span></span><br><span class=line><span class=comment># HTTP-01 or TLS-ALPN-01</span></span><br><span class=line><span class=comment># See [docs/tls.md](docs/tls.md) for more information</span></span><br><span class=line><span class=attr>tls_letsencrypt_challenge_type:</span> <span class=string>HTTP-01</span></span><br><span class=line><span class=comment># When HTTP-01 challenge is chosen, letsencrypt must set up a</span></span><br><span class=line><span class=comment># verification endpoint, and it will be listening on:</span></span><br><span class=line><span class=comment># :http = port 80</span></span><br><span class=line><span class=attr>tls_letsencrypt_listen:</span> <span class=string>":http"</span></span><br><span class=line></span><br><span class=line><span class=comment>## Use already defined certificates:</span></span><br><span class=line><span class=attr>tls_cert_path:</span> <span class=string>""</span></span><br><span class=line><span class=attr>tls_key_path:</span> <span class=string>""</span></span><br><span class=line></span><br><span class=line><span class=attr>log:</span></span><br><span class=line> <span class=comment># Output formatting for logs: text or json</span></span><br><span class=line> <span class=attr>format:</span> <span class=string>text</span></span><br><span class=line> <span class=attr>level:</span> <span class=string>info</span></span><br><span class=line></span><br><span class=line><span class=comment># Path to a file containg ACL policies.</span></span><br><span class=line><span class=comment># ACLs can be defined as YAML or HUJSON.</span></span><br><span class=line><span class=comment># https://tailscale.com/kb/1018/acls/</span></span><br><span class=line><span class=attr>acl_policy_path:</span> <span class=string>""</span></span><br><span class=line></span><br><span class=line><span class=comment>## DNS</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># headscale supports Tailscale's DNS configuration and MagicDNS.</span></span><br><span class=line><span class=comment># Please have a look to their KB to better understand the concepts:</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># - https://tailscale.com/kb/1054/dns/</span></span><br><span class=line><span class=comment># - https://tailscale.com/kb/1081/magicdns/</span></span><br><span class=line><span class=comment># - https://tailscale.com/blog/2021-09-private-dns-with-magicdns/</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=attr>dns_config:</span></span><br><span class=line> <span class=comment># Whether to prefer using Headscale provided DNS or use local.</span></span><br><span class=line> <span class=attr>override_local_dns:</span> <span class=literal>true</span></span><br><span class=line></span><br><span class=line> <span class=comment># List of DNS servers to expose to clients.</span></span><br><span class=line> <span class=attr>nameservers:</span></span><br><span class=line> <span class=bullet>-</span> <span class=number>1.1</span><span class=number>.1</span><span class=number>.1</span></span><br><span class=line></span><br><span class=line> <span class=comment># NextDNS (see https://tailscale.com/kb/1218/nextdns/).</span></span><br><span class=line> <span class=comment># "abc123" is example NextDNS ID, replace with yours.</span></span><br><span class=line> <span class=comment>#</span></span><br><span class=line> <span class=comment># With metadata sharing:</span></span><br><span class=line> <span class=comment># nameservers:</span></span><br><span class=line> <span class=comment># - https://dns.nextdns.io/abc123</span></span><br><span class=line> <span class=comment>#</span></span><br><span class=line> <span class=comment># Without metadata sharing:</span></span><br><span class=line> <span class=comment># nameservers:</span></span><br><span class=line> <span class=comment># - 2a07:a8c0::ab:c123</span></span><br><span class=line> <span class=comment># - 2a07:a8c1::ab:c123</span></span><br><span class=line></span><br><span class=line> <span class=comment># Split DNS (see https://tailscale.com/kb/1054/dns/),</span></span><br><span class=line> <span class=comment># list of search domains and the DNS to query for each one.</span></span><br><span class=line> <span class=comment>#</span></span><br><span class=line> <span class=comment># restricted_nameservers:</span></span><br><span class=line> <span class=comment># foo.bar.com:</span></span><br><span class=line> <span class=comment># - 1.1.1.1</span></span><br><span class=line> <span class=comment># darp.headscale.net:</span></span><br><span class=line> <span class=comment># - 1.1.1.1</span></span><br><span class=line> <span class=comment># - 8.8.8.8</span></span><br><span class=line></span><br><span class=line> <span class=comment># Search domains to inject.</span></span><br><span class=line> <span class=attr>domains:</span> []</span><br><span class=line></span><br><span class=line> <span class=comment># Extra DNS records</span></span><br><span class=line> <span class=comment># so far only A-records are supported (on the tailscale side)</span></span><br><span class=line> <span class=comment># See https://github.com/juanfont/headscale/blob/main/docs/dns-records.md#Limitations</span></span><br><span class=line> <span class=comment># extra_records:</span></span><br><span class=line> <span class=comment># - name: "grafana.myvpn.example.com"</span></span><br><span class=line> <span class=comment># type: "A"</span></span><br><span class=line> <span class=comment># value: "100.64.0.3"</span></span><br><span class=line> <span class=comment>#</span></span><br><span class=line> <span class=comment># # you can also put it in one line</span></span><br><span class=line> <span class=comment># - { name: "prometheus.myvpn.example.com", type: "A", value: "100.64.0.3" }</span></span><br><span class=line></span><br><span class=line> <span class=comment># Whether to use [MagicDNS](https://tailscale.com/kb/1081/magicdns/).</span></span><br><span class=line> <span class=comment># Only works if there is at least a nameserver defined.</span></span><br><span class=line> <span class=attr>magic_dns:</span> <span class=literal>true</span></span><br><span class=line></span><br><span class=line> <span class=comment># Defines the base domain to create the hostnames for MagicDNS.</span></span><br><span class=line> <span class=comment># `base_domain` must be a FQDNs, without the trailing dot.</span></span><br><span class=line> <span class=comment># The FQDN of the hosts will be</span></span><br><span class=line> <span class=comment># `hostname.user.base_domain` (e.g., _myhost.myuser.example.com_).</span></span><br><span class=line> <span class=attr>base_domain:</span> <span class=string>example.com</span></span><br><span class=line></span><br><span class=line><span class=comment># Unix socket used for the CLI to connect without authentication</span></span><br><span class=line><span class=comment># <span class=doctag>Note:</span> for production you will want to set this to something like:</span></span><br><span class=line><span class=comment># unix_socket: /var/run/headscale.sock</span></span><br><span class=line><span class=attr>unix_socket:</span> <span class=string>./headscale.sock</span></span><br><span class=line><span class=attr>unix_socket_permission:</span> <span class=string>"0770"</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># headscale supports experimental OpenID connect support,</span></span><br><span class=line><span class=comment># it is still being tested and might have some bugs, please</span></span><br><span class=line><span class=comment># help us test it.</span></span><br><span class=line><span class=comment># OpenID Connect</span></span><br><span class=line><span class=comment># oidc:</span></span><br><span class=line><span class=comment># only_start_if_oidc_is_available: true</span></span><br><span class=line><span class=comment># issuer: "https://your-oidc.issuer.com/path"</span></span><br><span class=line><span class=comment># client_id: "your-oidc-client-id"</span></span><br><span class=line><span class=comment># client_secret: "your-oidc-client-secret"</span></span><br><span class=line><span class=comment># # Alternatively, set `client_secret_path` to read the secret from the file.</span></span><br><span class=line><span class=comment># # It resolves environment variables, making integration to systemd's</span></span><br><span class=line><span class=comment># # `LoadCredential` straightforward:</span></span><br><span class=line><span class=comment># client_secret_path: "${CREDENTIALS_DIRECTORY}/oidc_client_secret"</span></span><br><span class=line><span class=comment># # client_secret and client_secret_path are mutually exclusive.</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># Customize the scopes used in the OIDC flow, defaults to "openid", "profile" and "email" and add custom query</span></span><br><span class=line><span class=comment># parameters to the Authorize Endpoint request. Scopes default to "openid", "profile" and "email".</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># scope: ["openid", "profile", "email", "custom"]</span></span><br><span class=line><span class=comment># extra_params:</span></span><br><span class=line><span class=comment># domain_hint: example.com</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># List allowed principal domains and/or users. If an authenticated user's domain is not in this list, the</span></span><br><span class=line><span class=comment># authentication request will be rejected.</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># allowed_domains:</span></span><br><span class=line><span class=comment># - example.com</span></span><br><span class=line><span class=comment># Groups from keycloak have a leading '/'</span></span><br><span class=line><span class=comment># allowed_groups:</span></span><br><span class=line><span class=comment># - /headscale</span></span><br><span class=line><span class=comment># allowed_users:</span></span><br><span class=line><span class=comment># - alice@example.com</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># If `strip_email_domain` is set to `true`, the domain part of the username email address will be removed.</span></span><br><span class=line><span class=comment># This will transform `first-name.last-name@example.com` to the user `first-name.last-name`</span></span><br><span class=line><span class=comment># If `strip_email_domain` is set to `false` the domain part will NOT be removed resulting to the following</span></span><br><span class=line><span class=comment># user: `first-name.last-name.example.com`</span></span><br><span class=line><span class=comment>#</span></span><br><span class=line><span class=comment># strip_email_domain: true</span></span><br><span class=line></span><br><span class=line><span class=comment># Logtail configuration</span></span><br><span class=line><span class=comment># Logtail is Tailscales logging and auditing infrastructure, it allows the control panel</span></span><br><span class=line><span class=comment># to instruct tailscale nodes to log their activity to a remote server.</span></span><br><span class=line><span class=attr>logtail:</span></span><br><span class=line> <span class=comment># Enable logtail for this headscales clients.</span></span><br><span class=line> <span class=comment># As there is currently no support for overriding the log server in headscale, this is</span></span><br><span class=line> <span class=comment># disabled by default. Enabling this will make your clients send logs to Tailscale Inc.</span></span><br><span class=line> <span class=attr>enabled:</span> <span class=literal>false</span></span><br><span class=line></span><br><span class=line><span class=comment># Enabling this option makes devices prefer a random port for WireGuard traffic over the</span></span><br><span class=line><span class=comment># default static port 41641. This option is intended as a workaround for some buggy</span></span><br><span class=line><span class=comment># firewall devices. See https://tailscale.com/kb/1181/firewalls/ for more information.</span></span><br><span class=line><span class=attr>randomize_client_port:</span> <span class=literal>false</span></span><br></pre></table></figure><p>问题就是出在几个文件路径的配置，默认都是当前目录，也就是headscale的可执行文件所在目录，需要按它配置说明中的生产配置进行修改<figure class="highlight yaml"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br></pre><td class=code><pre><span class=line><span class=comment># For production:</span></span><br><span class=line><span class=comment># /var/lib/headscale/private.key</span></span><br><span class=line><span class=attr>private_key_path:</span> <span class=string>/var/lib/headscale/private.key</span></span><br></pre></table></figure><p>直接改成绝对路径就好了，还有两个文件路径<br>另一个也是个秘钥的路径问题<figure class="highlight yaml"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br></pre><td class=code><pre><span class=line><span class=attr>noise:</span></span><br><span class=line> <span class=comment># The Noise private key is used to encrypt the</span></span><br><span class=line> <span class=comment># traffic between headscale and Tailscale clients when</span></span><br><span class=line> <span class=comment># using the new Noise-based protocol. It must be different</span></span><br><span class=line> <span class=comment># from the legacy private key.</span></span><br><span class=line> <span class=comment>#</span></span><br><span class=line> <span class=comment># For production:</span></span><br><span class=line> <span class=comment># private_key_path: /var/lib/headscale/noise_private.key</span></span><br><span class=line> <span class=attr>private_key_path:</span> <span class=string>/var/lib/headscale/noise_private.key</span></span><br></pre></table></figure><h3 id=第二个问题><a class=headerlink href=#第二个问题 title=第二个问题></a>第二个问题</h3><p>这个问题也是一种误导，<br>错误信息是<figure class="highlight shell"><table><tr><td class=gutter><pre><span class=line>1</span><br></pre><td class=code><pre><span class=line>Error initializing error="unable to open database file: out of memory (14)"</span><br></pre></table></figure><p>这就是个文件，内存也完全没有被占满的迹象，原来也是文件路径的问题<figure class="highlight yaml"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br></pre><td class=code><pre><span class=line><span class=comment># For production:</span></span><br><span class=line><span class=comment># db_path: /var/lib/headscale/db.sqlite</span></span><br><span class=line><span class=attr>db_path:</span> <span class=string>/var/lib/headscale/db.sqlite</span></span><br></pre></table></figure><p>都改成绝对路径就可以了，然后这里还有个就是要对<code>/var/lib/headscale/</code>和<code>/etc/headscale/</code>等路径赋予headscale用户权限，有时候对这类问题的排查真的蛮头疼，日志报错都不是真实的错误信息，开源项目对这些错误的提示真的也需要优化，后续的譬如mac也加入节点等后面再开篇讲</div><footer class=post-footer><div class=post-eof></div></footer></article></div><div class=post-block><article class=post-content itemscope itemtype=http://schema.org/Article><link href=https://nicksxs.me/2023/01/15/2022-%E5%B9%B4%E7%BB%88%E6%80%BB%E7%BB%93/ itemprop=mainEntityOfPage><span hidden itemprop=author itemscope itemtype=http://schema.org/Person><meta content=/uploads/avatar.jpg itemprop=image><meta content=Nicksxs itemprop=name></span><span hidden itemprop=publisher itemscope itemtype=http://schema.org/Organization><meta content="Nicksxs's Blog" itemprop=name><meta content="learn from zero,技术博客，Nicksxs，史学森" itemprop=description></span><span hidden itemprop=post itemscope itemtype=http://schema.org/CreativeWork><meta content="undefined | Nicksxs's Blog" itemprop=name><meta itemprop=description></span><header class=post-header><h2 itemprop="name headline" class=post-title><a class=post-title-link href=/2023/01/15/2022-%E5%B9%B4%E7%BB%88%E6%80%BB%E7%BB%93/ itemprop=url>2022 年终总结</a></h2><div class=post-meta-container><div class=post-meta><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar"></i> </span><span class=post-meta-item-text>发表于</span> <time itemprop="dateCreated datePublished" title="创建时间：2023-01-15 13:45:17 / 修改时间：13:45:18" datetime=2023-01-15T13:45:17+08:00>2023-01-15</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-folder"></i> </span><span class=post-meta-item-text>分类于</span> <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/%E7%94%9F%E6%B4%BB/ itemprop=url rel=index><span itemprop=name>生活</span></a> </span>， <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/%E7%94%9F%E6%B4%BB/%E5%B9%B4%E7%BB%88%E6%80%BB%E7%BB%93/ itemprop=url rel=index><span itemprop=name>年终总结</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title="2022 年终总结" id=/2023/01/15/2022-%E5%B9%B4%E7%BB%88%E6%80%BB%E7%BB%93/ title=阅读次数><span class=post-meta-item-icon><i class="far fa-eye"></i> </span><span class=post-meta-item-text>阅读次数：</span> <span class=leancloud-visitors-count></span> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-comment"></i> </span><span class=post-meta-item-text>Disqus：</span> <a href=/2023/01/15/2022-%E5%B9%B4%E7%BB%88%E6%80%BB%E7%BB%93/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2023/01/15/2022-年终总结/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>一年又一年，时间匆匆，这一年过得不太容易，很多事情都是来得猝不及防，很多规划也照例是没有完成，今年更多了一些，又是比较丧的一篇总结<div class=post-button><a class=btn href=/2023/01/15/2022-%E5%B9%B4%E7%BB%88%E6%80%BB%E7%BB%93/#more rel=contents>阅读全文 »</a></div></div><footer class=post-footer><div class=post-eof></div></footer></article></div><div class=post-block><article class=post-content itemscope itemtype=http://schema.org/Article><link href=https://nicksxs.me/2023/01/08/mybatis%E7%B3%BB%E5%88%97-dataSource%E8%A7%A3%E6%9E%90/ itemprop=mainEntityOfPage><span hidden itemprop=author itemscope itemtype=http://schema.org/Person><meta content=/uploads/avatar.jpg itemprop=image><meta content=Nicksxs itemprop=name></span><span hidden itemprop=publisher itemscope itemtype=http://schema.org/Organization><meta content="Nicksxs's Blog" itemprop=name><meta content="learn from zero,技术博客，Nicksxs，史学森" itemprop=description></span><span hidden itemprop=post itemscope itemtype=http://schema.org/CreativeWork><meta content="undefined | Nicksxs's Blog" itemprop=name><meta itemprop=description></span><header class=post-header><h2 itemprop="name headline" class=post-title><a class=post-title-link href=/2023/01/08/mybatis%E7%B3%BB%E5%88%97-dataSource%E8%A7%A3%E6%9E%90/ itemprop=url>mybatis系列-dataSource解析</a></h2><div class=post-meta-container><div class=post-meta><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar"></i> </span><span class=post-meta-item-text>发表于</span> <time itemprop="dateCreated datePublished" title="创建时间：2023-01-08 20:35:14" datetime=2023-01-08T20:35:14+08:00>2023-01-08</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-folder"></i> </span><span class=post-meta-item-text>分类于</span> <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Java/ itemprop=url rel=index><span itemprop=name>Java</span></a> </span>， <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Java/Mybatis/ itemprop=url rel=index><span itemprop=name>Mybatis</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title=mybatis系列-dataSource解析 id=/2023/01/08/mybatis%E7%B3%BB%E5%88%97-dataSource%E8%A7%A3%E6%9E%90/ title=阅读次数><span class=post-meta-item-icon><i class="far fa-eye"></i> </span><span class=post-meta-item-text>阅读次数：</span> <span class=leancloud-visitors-count></span> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-comment"></i> </span><span class=post-meta-item-text>Disqus：</span> <a href=/2023/01/08/mybatis%E7%B3%BB%E5%88%97-dataSource%E8%A7%A3%E6%9E%90/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2023/01/08/mybatis系列-dataSource解析/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>DataSource 作为数据库查询的最重要的数据源，在 mybatis 中也展开来说下<br>首先是解析的过程<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br></pre><td class=code><pre><span class=line><span class=type>SqlSessionFactory</span> <span class=variable>sqlSessionFactory</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">SqlSessionFactoryBuilder</span>().build(inputStream);</span><br></pre></table></figure><p>在构建 SqlSessionFactory 也就是 DefaultSqlSessionFactory 的时候，<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> SqlSessionFactory <span class="title function_">build</span><span class=params>(InputStream inputStream)</span> {</span><br><span class=line> <span class=keyword>return</span> build(inputStream, <span class=literal>null</span>, <span class=literal>null</span>);</span><br><span class=line> }</span><br><span class=line><span class=keyword>public</span> SqlSessionFactory <span class="title function_">build</span><span class=params>(InputStream inputStream, String environment, Properties properties)</span> {</span><br><span class=line> <span class=keyword>try</span> {</span><br><span class=line> <span class=type>XMLConfigBuilder</span> <span class=variable>parser</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">XMLConfigBuilder</span>(inputStream, environment, properties);</span><br><span class=line> <span class=keyword>return</span> build(parser.parse());</span><br><span class=line> } <span class=keyword>catch</span> (Exception e) {</span><br><span class=line> <span class=keyword>throw</span> ExceptionFactory.wrapException(<span class=string>"Error building SqlSession."</span>, e);</span><br><span class=line> } <span class=keyword>finally</span> {</span><br><span class=line> ErrorContext.instance().reset();</span><br><span class=line> <span class=keyword>try</span> {</span><br><span class=line> <span class=keyword>if</span> (inputStream != <span class=literal>null</span>) {</span><br><span class=line> inputStream.close();</span><br><span class=line> }</span><br><span class=line> } <span class=keyword>catch</span> (IOException e) {</span><br><span class=line> <span class=comment>// Intentionally ignore. Prefer previous error.</span></span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line> }</span><br></pre></table></figure><p>前面也说过，就是解析 <code>mybatis-config.xml</code> 成 <code>Configuration</code><figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br><span class=line>21</span><br><span class=line>22</span><br><span class=line>23</span><br><span class=line>24</span><br><span class=line>25</span><br><span class=line>26</span><br><span class=line>27</span><br><span class=line>28</span><br><span class=line>29</span><br><span class=line>30</span><br><span class=line>31</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> Configuration <span class="title function_">parse</span><span class=params>()</span> {</span><br><span class=line> <span class=keyword>if</span> (parsed) {</span><br><span class=line> <span class=keyword>throw</span> <span class=keyword>new</span> <span class="title class_">BuilderException</span>(<span class=string>"Each XMLConfigBuilder can only be used once."</span>);</span><br><span class=line> }</span><br><span class=line> parsed = <span class=literal>true</span>;</span><br><span class=line> parseConfiguration(parser.evalNode(<span class=string>"/configuration"</span>));</span><br><span class=line> <span class=keyword>return</span> configuration;</span><br><span class=line>}</span><br><span class=line><span class=keyword>private</span> <span class=keyword>void</span> <span class="title function_">parseConfiguration</span><span class=params>(XNode root)</span> {</span><br><span class=line> <span class=keyword>try</span> {</span><br><span class=line> <span class=comment>// issue #117 read properties first</span></span><br><span class=line> propertiesElement(root.evalNode(<span class=string>"properties"</span>));</span><br><span class=line> <span class=type>Properties</span> <span class=variable>settings</span> <span class=operator>=</span> settingsAsProperties(root.evalNode(<span class=string>"settings"</span>));</span><br><span class=line> loadCustomVfs(settings);</span><br><span class=line> loadCustomLogImpl(settings);</span><br><span class=line> typeAliasesElement(root.evalNode(<span class=string>"typeAliases"</span>));</span><br><span class=line> pluginElement(root.evalNode(<span class=string>"plugins"</span>));</span><br><span class=line> objectFactoryElement(root.evalNode(<span class=string>"objectFactory"</span>));</span><br><span class=line> objectWrapperFactoryElement(root.evalNode(<span class=string>"objectWrapperFactory"</span>));</span><br><span class=line> reflectorFactoryElement(root.evalNode(<span class=string>"reflectorFactory"</span>));</span><br><span class=line> settingsElement(settings);</span><br><span class=line> <span class=comment>// read it after objectFactory and objectWrapperFactory issue #631</span></span><br><span class=line> <span class=comment>// -------------> 是在这里解析了DataSource</span></span><br><span class=line> environmentsElement(root.evalNode(<span class=string>"environments"</span>));</span><br><span class=line> databaseIdProviderElement(root.evalNode(<span class=string>"databaseIdProvider"</span>));</span><br><span class=line> typeHandlerElement(root.evalNode(<span class=string>"typeHandlers"</span>));</span><br><span class=line> mapperElement(root.evalNode(<span class=string>"mappers"</span>));</span><br><span class=line> } <span class=keyword>catch</span> (Exception e) {</span><br><span class=line> <span class=keyword>throw</span> <span class=keyword>new</span> <span class="title class_">BuilderException</span>(<span class=string>"Error parsing SQL Mapper Configuration. Cause: "</span> + e, e);</span><br><span class=line> }</span><br><span class=line>}</span><br></pre></table></figure><p>环境解析了这一块的内容<figure class="highlight xml"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br></pre><td class=code><pre><span class=line><span class=tag><<span class=name>environments</span> <span class=attr>default</span>=<span class=string>"development"</span>></span></span><br><span class=line> <span class=tag><<span class=name>environment</span> <span class=attr>id</span>=<span class=string>"development"</span>></span></span><br><span class=line> <span class=tag><<span class=name>transactionManager</span> <span class=attr>type</span>=<span class=string>"JDBC"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>dataSource</span> <span class=attr>type</span>=<span class=string>"POOLED"</span>></span></span><br><span class=line> <span class=tag><<span class=name>property</span> <span class=attr>name</span>=<span class=string>"driver"</span> <span class=attr>value</span>=<span class=string>"${driver}"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>property</span> <span class=attr>name</span>=<span class=string>"url"</span> <span class=attr>value</span>=<span class=string>"${url}"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>property</span> <span class=attr>name</span>=<span class=string>"username"</span> <span class=attr>value</span>=<span class=string>"${username}"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>property</span> <span class=attr>name</span>=<span class=string>"password"</span> <span class=attr>value</span>=<span class=string>"${password}"</span>/></span></span><br><span class=line> <span class=tag></<span class=name>dataSource</span>></span></span><br><span class=line> <span class=tag></<span class=name>environment</span>></span></span><br><span class=line> <span class=tag></<span class=name>environments</span>></span></span><br></pre></table></figure><p>解析也是自上而下的，<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br></pre><td class=code><pre><span class=line><span class=keyword>private</span> <span class=keyword>void</span> <span class="title function_">environmentsElement</span><span class=params>(XNode context)</span> <span class=keyword>throws</span> Exception {</span><br><span class=line> <span class=keyword>if</span> (context != <span class=literal>null</span>) {</span><br><span class=line> <span class=keyword>if</span> (environment == <span class=literal>null</span>) {</span><br><span class=line> environment = context.getStringAttribute(<span class=string>"default"</span>);</span><br><span class=line> }</span><br><span class=line> <span class=keyword>for</span> (XNode child : context.getChildren()) {</span><br><span class=line> <span class=type>String</span> <span class=variable>id</span> <span class=operator>=</span> child.getStringAttribute(<span class=string>"id"</span>);</span><br><span class=line> <span class=keyword>if</span> (isSpecifiedEnvironment(id)) {</span><br><span class=line> <span class=type>TransactionFactory</span> <span class=variable>txFactory</span> <span class=operator>=</span> transactionManagerElement(child.evalNode(<span class=string>"transactionManager"</span>));</span><br><span class=line> <span class=type>DataSourceFactory</span> <span class=variable>dsFactory</span> <span class=operator>=</span> dataSourceElement(child.evalNode(<span class=string>"dataSource"</span>));</span><br><span class=line> <span class=type>DataSource</span> <span class=variable>dataSource</span> <span class=operator>=</span> dsFactory.getDataSource();</span><br><span class=line> Environment.<span class=type>Builder</span> <span class=variable>environmentBuilder</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">Environment</span>.Builder(id)</span><br><span class=line> .transactionFactory(txFactory)</span><br><span class=line> .dataSource(dataSource);</span><br><span class=line> configuration.setEnvironment(environmentBuilder.build());</span><br><span class=line> <span class=keyword>break</span>;</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line>}</span><br></pre></table></figure><p>前面第一步是解析事务管理器元素<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br></pre><td class=code><pre><span class=line><span class=keyword>private</span> TransactionFactory <span class="title function_">transactionManagerElement</span><span class=params>(XNode context)</span> <span class=keyword>throws</span> Exception {</span><br><span class=line> <span class=keyword>if</span> (context != <span class=literal>null</span>) {</span><br><span class=line> <span class=type>String</span> <span class=variable>type</span> <span class=operator>=</span> context.getStringAttribute(<span class=string>"type"</span>);</span><br><span class=line> <span class=type>Properties</span> <span class=variable>props</span> <span class=operator>=</span> context.getChildrenAsProperties();</span><br><span class=line> <span class=type>TransactionFactory</span> <span class=variable>factory</span> <span class=operator>=</span> (TransactionFactory) resolveClass(type).getDeclaredConstructor().newInstance();</span><br><span class=line> factory.setProperties(props);</span><br><span class=line> <span class=keyword>return</span> factory;</span><br><span class=line> }</span><br><span class=line> <span class=keyword>throw</span> <span class=keyword>new</span> <span class="title class_">BuilderException</span>(<span class=string>"Environment declaration requires a TransactionFactory."</span>);</span><br><span class=line>}</span><br></pre></table></figure><p>而这里的 <code>resolveClass</code> 其实就使用了上一篇的 <code>typeAliases</code> 系统，这里是使用了 <code>JdbcTransactionFactory</code> 作为事务管理器，<br>后面的就是 <code>DataSourceFactory</code> 的创建也是 <code>DataSource</code> 的创建<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br></pre><td class=code><pre><span class=line><span class=keyword>private</span> DataSourceFactory <span class="title function_">dataSourceElement</span><span class=params>(XNode context)</span> <span class=keyword>throws</span> Exception {</span><br><span class=line> <span class=keyword>if</span> (context != <span class=literal>null</span>) {</span><br><span class=line> <span class=type>String</span> <span class=variable>type</span> <span class=operator>=</span> context.getStringAttribute(<span class=string>"type"</span>);</span><br><span class=line> <span class=type>Properties</span> <span class=variable>props</span> <span class=operator>=</span> context.getChildrenAsProperties();</span><br><span class=line> <span class=type>DataSourceFactory</span> <span class=variable>factory</span> <span class=operator>=</span> (DataSourceFactory) resolveClass(type).getDeclaredConstructor().newInstance();</span><br><span class=line> factory.setProperties(props);</span><br><span class=line> <span class=keyword>return</span> factory;</span><br><span class=line> }</span><br><span class=line> <span class=keyword>throw</span> <span class=keyword>new</span> <span class="title class_">BuilderException</span>(<span class=string>"Environment declaration requires a DataSourceFactory."</span>);</span><br><span class=line>}</span><br></pre></table></figure><p>因为在config文件中设置了Pooled，所以对应创建的就是 <code>PooledDataSourceFactory</code><br>但是这里其实有个比较需要注意的，mybatis 这里的其实是继承了 <code>UnpooledDataSourceFactory</code><br>将基础方法都放在了 <code>UnpooledDataSourceFactory</code> 中<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> <span class=keyword>class</span> <span class="title class_">PooledDataSourceFactory</span> <span class=keyword>extends</span> <span class="title class_">UnpooledDataSourceFactory</span> {</span><br><span class=line></span><br><span class=line> <span class=keyword>public</span> <span class="title function_">PooledDataSourceFactory</span><span class=params>()</span> {</span><br><span class=line> <span class=built_in>this</span>.dataSource = <span class=keyword>new</span> <span class="title class_">PooledDataSource</span>();</span><br><span class=line> }</span><br><span class=line></span><br><span class=line>}</span><br></pre></table></figure><p>这里只保留了在构造方法里创建 <code>DataSource</code><br>而这个 <code>PooledDataSource</code> 虽然没有直接继承 <code>UnpooledDataSource</code>，但其实<br>在构造方法里也是<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> <span class="title function_">PooledDataSource</span><span class=params>()</span> {</span><br><span class=line> dataSource = <span class=keyword>new</span> <span class="title class_">UnpooledDataSource</span>();</span><br><span class=line>}</span><br></pre></table></figure><p>至于为什么这么做呢应该也是考虑到能比较多的复用代码，因为 <code>Pooled</code> 其实跟 <code>Unpooled</code> 最重要的差别就在于是不是每次都重开连接<br>使用连接池能够让应用在有大量查询的时候不用反复创建连接，省去了建联的网络等开销，<code>Unpooled</code>就是完成与数据库的连接，并可以获取该连接<br>主要的代码<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br><span class=line>21</span><br><span class=line>22</span><br><span class=line>23</span><br><span class=line>24</span><br><span class=line>25</span><br><span class=line>26</span><br><span class=line>27</span><br><span class=line>28</span><br></pre><td class=code><pre><span class=line><span class=meta>@Override</span></span><br><span class=line><span class=keyword>public</span> Connection <span class="title function_">getConnection</span><span class=params>()</span> <span class=keyword>throws</span> SQLException {</span><br><span class=line> <span class=keyword>return</span> doGetConnection(username, password);</span><br><span class=line>}</span><br><span class=line></span><br><span class=line><span class=meta>@Override</span></span><br><span class=line><span class=keyword>public</span> Connection <span class="title function_">getConnection</span><span class=params>(String username, String password)</span> <span class=keyword>throws</span> SQLException {</span><br><span class=line> <span class=keyword>return</span> doGetConnection(username, password);</span><br><span class=line>}</span><br><span class=line><span class=keyword>private</span> Connection <span class="title function_">doGetConnection</span><span class=params>(String username, String password)</span> <span class=keyword>throws</span> SQLException {</span><br><span class=line> <span class=type>Properties</span> <span class=variable>props</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">Properties</span>();</span><br><span class=line> <span class=keyword>if</span> (driverProperties != <span class=literal>null</span>) {</span><br><span class=line> props.putAll(driverProperties);</span><br><span class=line> }</span><br><span class=line> <span class=keyword>if</span> (username != <span class=literal>null</span>) {</span><br><span class=line> props.setProperty(<span class=string>"user"</span>, username);</span><br><span class=line> }</span><br><span class=line> <span class=keyword>if</span> (password != <span class=literal>null</span>) {</span><br><span class=line> props.setProperty(<span class=string>"password"</span>, password);</span><br><span class=line> }</span><br><span class=line> <span class=keyword>return</span> doGetConnection(props);</span><br><span class=line>}</span><br><span class=line><span class=keyword>private</span> Connection <span class="title function_">doGetConnection</span><span class=params>(Properties properties)</span> <span class=keyword>throws</span> SQLException {</span><br><span class=line> initializeDriver();</span><br><span class=line> <span class=type>Connection</span> <span class=variable>connection</span> <span class=operator>=</span> DriverManager.getConnection(url, properties);</span><br><span class=line> configureConnection(connection);</span><br><span class=line> <span class=keyword>return</span> connection;</span><br><span class=line>}</span><br></pre></table></figure><p>而对于Pooled就会处理池化的逻辑<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br><span class=line>21</span><br><span class=line>22</span><br><span class=line>23</span><br><span class=line>24</span><br><span class=line>25</span><br><span class=line>26</span><br><span class=line>27</span><br><span class=line>28</span><br><span class=line>29</span><br><span class=line>30</span><br><span class=line>31</span><br><span class=line>32</span><br><span class=line>33</span><br><span class=line>34</span><br><span class=line>35</span><br><span class=line>36</span><br><span class=line>37</span><br><span class=line>38</span><br><span class=line>39</span><br><span class=line>40</span><br><span class=line>41</span><br><span class=line>42</span><br><span class=line>43</span><br><span class=line>44</span><br><span class=line>45</span><br><span class=line>46</span><br><span class=line>47</span><br><span class=line>48</span><br><span class=line>49</span><br><span class=line>50</span><br><span class=line>51</span><br><span class=line>52</span><br><span class=line>53</span><br><span class=line>54</span><br><span class=line>55</span><br><span class=line>56</span><br><span class=line>57</span><br><span class=line>58</span><br><span class=line>59</span><br><span class=line>60</span><br><span class=line>61</span><br><span class=line>62</span><br><span class=line>63</span><br><span class=line>64</span><br><span class=line>65</span><br><span class=line>66</span><br><span class=line>67</span><br><span class=line>68</span><br><span class=line>69</span><br><span class=line>70</span><br><span class=line>71</span><br><span class=line>72</span><br><span class=line>73</span><br><span class=line>74</span><br><span class=line>75</span><br><span class=line>76</span><br><span class=line>77</span><br><span class=line>78</span><br><span class=line>79</span><br><span class=line>80</span><br><span class=line>81</span><br><span class=line>82</span><br><span class=line>83</span><br><span class=line>84</span><br><span class=line>85</span><br><span class=line>86</span><br><span class=line>87</span><br><span class=line>88</span><br><span class=line>89</span><br><span class=line>90</span><br><span class=line>91</span><br><span class=line>92</span><br><span class=line>93</span><br><span class=line>94</span><br><span class=line>95</span><br><span class=line>96</span><br><span class=line>97</span><br><span class=line>98</span><br><span class=line>99</span><br><span class=line>100</span><br><span class=line>101</span><br><span class=line>102</span><br><span class=line>103</span><br><span class=line>104</span><br><span class=line>105</span><br><span class=line>106</span><br><span class=line>107</span><br><span class=line>108</span><br><span class=line>109</span><br><span class=line>110</span><br><span class=line>111</span><br><span class=line>112</span><br><span class=line>113</span><br><span class=line>114</span><br><span class=line>115</span><br><span class=line>116</span><br><span class=line>117</span><br><span class=line>118</span><br></pre><td class=code><pre><span class=line><span class=keyword>private</span> PooledConnection <span class="title function_">popConnection</span><span class=params>(String username, String password)</span> <span class=keyword>throws</span> SQLException {</span><br><span class=line> <span class=type>boolean</span> <span class=variable>countedWait</span> <span class=operator>=</span> <span class=literal>false</span>;</span><br><span class=line> <span class=type>PooledConnection</span> <span class=variable>conn</span> <span class=operator>=</span> <span class=literal>null</span>;</span><br><span class=line> <span class=type>long</span> <span class=variable>t</span> <span class=operator>=</span> System.currentTimeMillis();</span><br><span class=line> <span class=type>int</span> <span class=variable>localBadConnectionCount</span> <span class=operator>=</span> <span class=number>0</span>;</span><br><span class=line></span><br><span class=line> <span class=keyword>while</span> (conn == <span class=literal>null</span>) {</span><br><span class=line> lock.lock();</span><br><span class=line> <span class=keyword>try</span> {</span><br><span class=line> <span class=keyword>if</span> (!state.idleConnections.isEmpty()) {</span><br><span class=line> <span class=comment>// Pool has available connection</span></span><br><span class=line> conn = state.idleConnections.remove(<span class=number>0</span>);</span><br><span class=line> <span class=keyword>if</span> (log.isDebugEnabled()) {</span><br><span class=line> log.debug(<span class=string>"Checked out connection "</span> + conn.getRealHashCode() + <span class=string>" from pool."</span>);</span><br><span class=line> }</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=comment>// Pool does not have available connection</span></span><br><span class=line> <span class=keyword>if</span> (state.activeConnections.size() < poolMaximumActiveConnections) {</span><br><span class=line> <span class=comment>// Can create new connection</span></span><br><span class=line> conn = <span class=keyword>new</span> <span class="title class_">PooledConnection</span>(dataSource.getConnection(), <span class=built_in>this</span>);</span><br><span class=line> <span class=keyword>if</span> (log.isDebugEnabled()) {</span><br><span class=line> log.debug(<span class=string>"Created connection "</span> + conn.getRealHashCode() + <span class=string>"."</span>);</span><br><span class=line> }</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=comment>// Cannot create new connection</span></span><br><span class=line> <span class=type>PooledConnection</span> <span class=variable>oldestActiveConnection</span> <span class=operator>=</span> state.activeConnections.get(<span class=number>0</span>);</span><br><span class=line> <span class=type>long</span> <span class=variable>longestCheckoutTime</span> <span class=operator>=</span> oldestActiveConnection.getCheckoutTime();</span><br><span class=line> <span class=keyword>if</span> (longestCheckoutTime > poolMaximumCheckoutTime) {</span><br><span class=line> <span class=comment>// Can claim overdue connection</span></span><br><span class=line> state.claimedOverdueConnectionCount++;</span><br><span class=line> state.accumulatedCheckoutTimeOfOverdueConnections += longestCheckoutTime;</span><br><span class=line> state.accumulatedCheckoutTime += longestCheckoutTime;</span><br><span class=line> state.activeConnections.remove(oldestActiveConnection);</span><br><span class=line> <span class=keyword>if</span> (!oldestActiveConnection.getRealConnection().getAutoCommit()) {</span><br><span class=line> <span class=keyword>try</span> {</span><br><span class=line> oldestActiveConnection.getRealConnection().rollback();</span><br><span class=line> } <span class=keyword>catch</span> (SQLException e) {</span><br><span class=line> <span class=comment>/*</span></span><br><span class=line><span class=comment> Just log a message for debug and continue to execute the following</span></span><br><span class=line><span class=comment> statement like nothing happened.</span></span><br><span class=line><span class=comment> Wrap the bad connection with a new PooledConnection, this will help</span></span><br><span class=line><span class=comment> to not interrupt current executing thread and give current thread a</span></span><br><span class=line><span class=comment> chance to join the next competition for another valid/good database</span></span><br><span class=line><span class=comment> connection. At the end of this loop, bad {@link @conn} will be set as null.</span></span><br><span class=line><span class=comment> */</span></span><br><span class=line> log.debug(<span class=string>"Bad connection. Could not roll back"</span>);</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line> conn = <span class=keyword>new</span> <span class="title class_">PooledConnection</span>(oldestActiveConnection.getRealConnection(), <span class=built_in>this</span>);</span><br><span class=line> conn.setCreatedTimestamp(oldestActiveConnection.getCreatedTimestamp());</span><br><span class=line> conn.setLastUsedTimestamp(oldestActiveConnection.getLastUsedTimestamp());</span><br><span class=line> oldestActiveConnection.invalidate();</span><br><span class=line> <span class=keyword>if</span> (log.isDebugEnabled()) {</span><br><span class=line> log.debug(<span class=string>"Claimed overdue connection "</span> + conn.getRealHashCode() + <span class=string>"."</span>);</span><br><span class=line> }</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=comment>// Must wait</span></span><br><span class=line> <span class=keyword>try</span> {</span><br><span class=line> <span class=keyword>if</span> (!countedWait) {</span><br><span class=line> state.hadToWaitCount++;</span><br><span class=line> countedWait = <span class=literal>true</span>;</span><br><span class=line> }</span><br><span class=line> <span class=keyword>if</span> (log.isDebugEnabled()) {</span><br><span class=line> log.debug(<span class=string>"Waiting as long as "</span> + poolTimeToWait + <span class=string>" milliseconds for connection."</span>);</span><br><span class=line> }</span><br><span class=line> <span class=type>long</span> <span class=variable>wt</span> <span class=operator>=</span> System.currentTimeMillis();</span><br><span class=line> condition.await(poolTimeToWait, TimeUnit.MILLISECONDS);</span><br><span class=line> state.accumulatedWaitTime += System.currentTimeMillis() - wt;</span><br><span class=line> } <span class=keyword>catch</span> (InterruptedException e) {</span><br><span class=line> <span class=comment>// set interrupt flag</span></span><br><span class=line> Thread.currentThread().interrupt();</span><br><span class=line> <span class=keyword>break</span>;</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line> <span class=keyword>if</span> (conn != <span class=literal>null</span>) {</span><br><span class=line> <span class=comment>// ping to server and check the connection is valid or not</span></span><br><span class=line> <span class=keyword>if</span> (conn.isValid()) {</span><br><span class=line> <span class=keyword>if</span> (!conn.getRealConnection().getAutoCommit()) {</span><br><span class=line> conn.getRealConnection().rollback();</span><br><span class=line> }</span><br><span class=line> conn.setConnectionTypeCode(assembleConnectionTypeCode(dataSource.getUrl(), username, password));</span><br><span class=line> conn.setCheckoutTimestamp(System.currentTimeMillis());</span><br><span class=line> conn.setLastUsedTimestamp(System.currentTimeMillis());</span><br><span class=line> state.activeConnections.add(conn);</span><br><span class=line> state.requestCount++;</span><br><span class=line> state.accumulatedRequestTime += System.currentTimeMillis() - t;</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=keyword>if</span> (log.isDebugEnabled()) {</span><br><span class=line> log.debug(<span class=string>"A bad connection ("</span> + conn.getRealHashCode() + <span class=string>") was returned from the pool, getting another connection."</span>);</span><br><span class=line> }</span><br><span class=line> state.badConnectionCount++;</span><br><span class=line> localBadConnectionCount++;</span><br><span class=line> conn = <span class=literal>null</span>;</span><br><span class=line> <span class=keyword>if</span> (localBadConnectionCount > (poolMaximumIdleConnections + poolMaximumLocalBadConnectionTolerance)) {</span><br><span class=line> <span class=keyword>if</span> (log.isDebugEnabled()) {</span><br><span class=line> log.debug(<span class=string>"PooledDataSource: Could not get a good connection to the database."</span>);</span><br><span class=line> }</span><br><span class=line> <span class=keyword>throw</span> <span class=keyword>new</span> <span class="title class_">SQLException</span>(<span class=string>"PooledDataSource: Could not get a good connection to the database."</span>);</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line> } <span class=keyword>finally</span> {</span><br><span class=line> lock.unlock();</span><br><span class=line> }</span><br><span class=line></span><br><span class=line> }</span><br><span class=line></span><br><span class=line> <span class=keyword>if</span> (conn == <span class=literal>null</span>) {</span><br><span class=line> <span class=keyword>if</span> (log.isDebugEnabled()) {</span><br><span class=line> log.debug(<span class=string>"PooledDataSource: Unknown severe error condition. The connection pool returned a null connection."</span>);</span><br><span class=line> }</span><br><span class=line> <span class=keyword>throw</span> <span class=keyword>new</span> <span class="title class_">SQLException</span>(<span class=string>"PooledDataSource: Unknown severe error condition. The connection pool returned a null connection."</span>);</span><br><span class=line> }</span><br><span class=line></span><br><span class=line> <span class=keyword>return</span> conn;</span><br><span class=line> }</span><br></pre></table></figure><p>它的入口不是个get方法，而是pop，从含义来来讲就不一样<br><code>org.apache.ibatis.datasource.pooled.PooledDataSource#getConnection()</code><figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br></pre><td class=code><pre><span class=line><span class=meta>@Override</span></span><br><span class=line><span class=keyword>public</span> Connection <span class="title function_">getConnection</span><span class=params>()</span> <span class=keyword>throws</span> SQLException {</span><br><span class=line> <span class=keyword>return</span> popConnection(dataSource.getUsername(), dataSource.getPassword()).getProxyConnection();</span><br><span class=line>}</span><br></pre></table></figure><p>对于具体怎么获取连接我们可以下一篇具体讲下</div><footer class=post-footer><div class=post-eof></div></footer></article></div><div class=post-block><article class=post-content itemscope itemtype=http://schema.org/Article><link href=https://nicksxs.me/2023/01/01/mybatis%E7%B3%BB%E5%88%97-typeAliases%E7%B3%BB%E7%BB%9F/ itemprop=mainEntityOfPage><span hidden itemprop=author itemscope itemtype=http://schema.org/Person><meta content=/uploads/avatar.jpg itemprop=image><meta content=Nicksxs itemprop=name></span><span hidden itemprop=publisher itemscope itemtype=http://schema.org/Organization><meta content="Nicksxs's Blog" itemprop=name><meta content="learn from zero,技术博客，Nicksxs，史学森" itemprop=description></span><span hidden itemprop=post itemscope itemtype=http://schema.org/CreativeWork><meta content="undefined | Nicksxs's Blog" itemprop=name><meta itemprop=description></span><header class=post-header><h2 itemprop="name headline" class=post-title><a class=post-title-link href=/2023/01/01/mybatis%E7%B3%BB%E5%88%97-typeAliases%E7%B3%BB%E7%BB%9F/ itemprop=url>mybatis系列-typeAliases系统</a></h2><div class=post-meta-container><div class=post-meta><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar"></i> </span><span class=post-meta-item-text>发表于</span> <time itemprop="dateCreated datePublished" title="创建时间：2023-01-01 20:07:42 / 修改时间：20:08:24" datetime=2023-01-01T20:07:42+08:00>2023-01-01</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-folder"></i> </span><span class=post-meta-item-text>分类于</span> <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Java/ itemprop=url rel=index><span itemprop=name>Java</span></a> </span>， <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Java/Mybatis/ itemprop=url rel=index><span itemprop=name>Mybatis</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title=mybatis系列-typeAliases系统 id=/2023/01/01/mybatis%E7%B3%BB%E5%88%97-typeAliases%E7%B3%BB%E7%BB%9F/ title=阅读次数><span class=post-meta-item-icon><i class="far fa-eye"></i> </span><span class=post-meta-item-text>阅读次数：</span> <span class=leancloud-visitors-count></span> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-comment"></i> </span><span class=post-meta-item-text>Disqus：</span> <a href=/2023/01/01/mybatis%E7%B3%BB%E5%88%97-typeAliases%E7%B3%BB%E7%BB%9F/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2023/01/01/mybatis系列-typeAliases系统/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>其实前面已经聊到过这个概念，在mybatis的配置中，以及一些初始化逻辑都是用了typeAliases，<figure class="highlight xml"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br></pre><td class=code><pre><span class=line><span class=tag><<span class=name>typeAliases</span>></span></span><br><span class=line> <span class=tag><<span class=name>typeAlias</span> <span class=attr>alias</span>=<span class=string>"Author"</span> <span class=attr>type</span>=<span class=string>"domain.blog.Author"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>typeAlias</span> <span class=attr>alias</span>=<span class=string>"Blog"</span> <span class=attr>type</span>=<span class=string>"domain.blog.Blog"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>typeAlias</span> <span class=attr>alias</span>=<span class=string>"Comment"</span> <span class=attr>type</span>=<span class=string>"domain.blog.Comment"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>typeAlias</span> <span class=attr>alias</span>=<span class=string>"Post"</span> <span class=attr>type</span>=<span class=string>"domain.blog.Post"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>typeAlias</span> <span class=attr>alias</span>=<span class=string>"Section"</span> <span class=attr>type</span>=<span class=string>"domain.blog.Section"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>typeAlias</span> <span class=attr>alias</span>=<span class=string>"Tag"</span> <span class=attr>type</span>=<span class=string>"domain.blog.Tag"</span>/></span></span><br><span class=line><span class=tag></<span class=name>typeAliases</span>></span></span><br></pre></table></figure><p>可以在这里注册类型别名，然后在mybatis中配置使用时，可以简化这些类型的使用，其底层逻辑主要是一个map，<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> <span class=keyword>class</span> <span class="title class_">TypeAliasRegistry</span> {</span><br><span class=line></span><br><span class=line> <span class=keyword>private</span> <span class=keyword>final</span> Map<String, Class<?>> typeAliases = <span class=keyword>new</span> <span class="title class_">HashMap</span><>();</span><br></pre></table></figure><p>以string作为key，class对象作为value，比如我们在一开始使用的配置文件<figure class="highlight xml"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br></pre><td class=code><pre><span class=line><span class=tag><<span class=name>dataSource</span> <span class=attr>type</span>=<span class=string>"POOLED"</span>></span></span><br><span class=line> <span class=tag><<span class=name>property</span> <span class=attr>name</span>=<span class=string>"driver"</span> <span class=attr>value</span>=<span class=string>"${driver}"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>property</span> <span class=attr>name</span>=<span class=string>"url"</span> <span class=attr>value</span>=<span class=string>"${url}"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>property</span> <span class=attr>name</span>=<span class=string>"username"</span> <span class=attr>value</span>=<span class=string>"${username}"</span>/></span></span><br><span class=line> <span class=tag><<span class=name>property</span> <span class=attr>name</span>=<span class=string>"password"</span> <span class=attr>value</span>=<span class=string>"${password}"</span>/></span></span><br><span class=line><span class=tag></<span class=name>dataSource</span>></span></span><br></pre></table></figure><p>这里使用的dataSource是POOLED，那它肯定是个别名或者需要对应处理<br>而这个别名就是在Configuration的构造方法里初始化<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br><span class=line>21</span><br><span class=line>22</span><br><span class=line>23</span><br><span class=line>24</span><br><span class=line>25</span><br><span class=line>26</span><br><span class=line>27</span><br><span class=line>28</span><br><span class=line>29</span><br><span class=line>30</span><br><span class=line>31</span><br><span class=line>32</span><br><span class=line>33</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> <span class="title function_">Configuration</span><span class=params>()</span> {</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"JDBC"</span>, JdbcTransactionFactory.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"MANAGED"</span>, ManagedTransactionFactory.class);</span><br><span class=line></span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"JNDI"</span>, JndiDataSourceFactory.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"POOLED"</span>, PooledDataSourceFactory.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"UNPOOLED"</span>, UnpooledDataSourceFactory.class);</span><br><span class=line></span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"PERPETUAL"</span>, PerpetualCache.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"FIFO"</span>, FifoCache.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"LRU"</span>, LruCache.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"SOFT"</span>, SoftCache.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"WEAK"</span>, WeakCache.class);</span><br><span class=line></span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"DB_VENDOR"</span>, VendorDatabaseIdProvider.class);</span><br><span class=line></span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"XML"</span>, XMLLanguageDriver.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"RAW"</span>, RawLanguageDriver.class);</span><br><span class=line></span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"SLF4J"</span>, Slf4jImpl.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"COMMONS_LOGGING"</span>, JakartaCommonsLoggingImpl.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"LOG4J"</span>, Log4jImpl.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"LOG4J2"</span>, Log4j2Impl.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"JDK_LOGGING"</span>, Jdk14LoggingImpl.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"STDOUT_LOGGING"</span>, StdOutImpl.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"NO_LOGGING"</span>, NoLoggingImpl.class);</span><br><span class=line></span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"CGLIB"</span>, CglibProxyFactory.class);</span><br><span class=line> typeAliasRegistry.registerAlias(<span class=string>"JAVASSIST"</span>, JavassistProxyFactory.class);</span><br><span class=line></span><br><span class=line> languageRegistry.setDefaultDriverClass(XMLLanguageDriver.class);</span><br><span class=line> languageRegistry.register(RawLanguageDriver.class);</span><br><span class=line> }</span><br></pre></table></figure><p>正是通过<code>typeAliasRegistry.registerAlias("POOLED", PooledDataSourceFactory.class);</code>这一行，注册了<br><code>POOLED</code>对应的别名类型是<code>PooledDataSourceFactory.class</code><br>具体的注册方法是在<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> <span class=keyword>void</span> <span class="title function_">registerAlias</span><span class=params>(String alias, Class<?> value)</span> {</span><br><span class=line> <span class=keyword>if</span> (alias == <span class=literal>null</span>) {</span><br><span class=line> <span class=keyword>throw</span> <span class=keyword>new</span> <span class="title class_">TypeException</span>(<span class=string>"The parameter alias cannot be null"</span>);</span><br><span class=line> }</span><br><span class=line> <span class=comment>// issue #748</span></span><br><span class=line> <span class=comment>// 转换成小写，</span></span><br><span class=line> <span class=type>String</span> <span class=variable>key</span> <span class=operator>=</span> alias.toLowerCase(Locale.ENGLISH);</span><br><span class=line> <span class=comment>// 判断是否已经注册过了</span></span><br><span class=line> <span class=keyword>if</span> (typeAliases.containsKey(key) && typeAliases.get(key) != <span class=literal>null</span> && !typeAliases.get(key).equals(value)) {</span><br><span class=line> <span class=keyword>throw</span> <span class=keyword>new</span> <span class="title class_">TypeException</span>(<span class=string>"The alias '"</span> + alias + <span class=string>"' is already mapped to the value '"</span> + typeAliases.get(key).getName() + <span class=string>"'."</span>);</span><br><span class=line> }</span><br><span class=line> <span class=comment>// 放进map里</span></span><br><span class=line> typeAliases.put(key, value);</span><br><span class=line>}</span><br></pre></table></figure><p>而获取的逻辑在这<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> <T> Class<T> <span class="title function_">resolveAlias</span><span class=params>(String string)</span> {</span><br><span class=line> <span class=keyword>try</span> {</span><br><span class=line> <span class=keyword>if</span> (string == <span class=literal>null</span>) {</span><br><span class=line> <span class=keyword>return</span> <span class=literal>null</span>;</span><br><span class=line> }</span><br><span class=line> <span class=comment>// issue #748</span></span><br><span class=line> <span class=comment>// 同样的转成小写</span></span><br><span class=line> <span class=type>String</span> <span class=variable>key</span> <span class=operator>=</span> string.toLowerCase(Locale.ENGLISH);</span><br><span class=line> Class<T> value;</span><br><span class=line> <span class=keyword>if</span> (typeAliases.containsKey(key)) {</span><br><span class=line> value = (Class<T>) typeAliases.get(key);</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=comment>// 这里还有从路径下处理的逻辑</span></span><br><span class=line> value = (Class<T>) Resources.classForName(string);</span><br><span class=line> }</span><br><span class=line> <span class=keyword>return</span> value;</span><br><span class=line> } <span class=keyword>catch</span> (ClassNotFoundException e) {</span><br><span class=line> <span class=keyword>throw</span> <span class=keyword>new</span> <span class="title class_">TypeException</span>(<span class=string>"Could not resolve type alias '"</span> + string + <span class=string>"'. Cause: "</span> + e, e);</span><br><span class=line> }</span><br><span class=line> }</span><br></pre></table></figure><p>逻辑比较简单，但是在mybatis中也是不可或缺的一块概念</div><footer class=post-footer><div class=post-eof></div></footer></article></div><div class=post-block><article class=post-content itemscope itemtype=http://schema.org/Article><link href=https://nicksxs.me/2022/12/25/docker%E6%AF%94%E4%B8%80%E8%88%AC%E5%A4%9A%E4%B8%80%E7%82%B9%E7%9A%84%E5%88%9D%E5%AD%A6%E8%80%85%E4%BB%8B%E7%BB%8D%E5%9B%9B/ itemprop=mainEntityOfPage><span hidden itemprop=author itemscope itemtype=http://schema.org/Person><meta content=/uploads/avatar.jpg itemprop=image><meta content=Nicksxs itemprop=name></span><span hidden itemprop=publisher itemscope itemtype=http://schema.org/Organization><meta content="Nicksxs's Blog" itemprop=name><meta content="learn from zero,技术博客，Nicksxs，史学森" itemprop=description></span><span hidden itemprop=post itemscope itemtype=http://schema.org/CreativeWork><meta content="undefined | Nicksxs's Blog" itemprop=name><meta itemprop=description></span><header class=post-header><h2 itemprop="name headline" class=post-title><a class=post-title-link href=/2022/12/25/docker%E6%AF%94%E4%B8%80%E8%88%AC%E5%A4%9A%E4%B8%80%E7%82%B9%E7%9A%84%E5%88%9D%E5%AD%A6%E8%80%85%E4%BB%8B%E7%BB%8D%E5%9B%9B/ itemprop=url>docker比一般多一点的初学者介绍四</a></h2><div class=post-meta-container><div class=post-meta><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar"></i> </span><span class=post-meta-item-text>发表于</span> <time itemprop="dateCreated datePublished" title="创建时间：2022-12-25 19:40:28" datetime=2022-12-25T19:40:28+08:00>2022-12-25</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar-check"></i> </span><span class=post-meta-item-text>更新于</span> <time title="修改时间：2025-10-12 20:06:06" datetime=2025-10-12T20:06:06+08:00 itemprop=dateModified>2025-10-12</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-folder"></i> </span><span class=post-meta-item-text>分类于</span> <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Docker/ itemprop=url rel=index><span itemprop=name>Docker</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title=docker比一般多一点的初学者介绍四 id=/2022/12/25/docker%E6%AF%94%E4%B8%80%E8%88%AC%E5%A4%9A%E4%B8%80%E7%82%B9%E7%9A%84%E5%88%9D%E5%AD%A6%E8%80%85%E4%BB%8B%E7%BB%8D%E5%9B%9B/ title=阅读次数><span class=post-meta-item-icon><i class="far fa-eye"></i> </span><span class=post-meta-item-text>阅读次数：</span> <span class=leancloud-visitors-count></span> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-comment"></i> </span><span class=post-meta-item-text>Disqus：</span> <a href=/2022/12/25/docker%E6%AF%94%E4%B8%80%E8%88%AC%E5%A4%9A%E4%B8%80%E7%82%B9%E7%9A%84%E5%88%9D%E5%AD%A6%E8%80%85%E4%BB%8B%E7%BB%8D%E5%9B%9B/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2022/12/25/docker比一般多一点的初学者介绍四/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>这次单独介绍下docker体系里非常重要的cgroup，docker对资源的限制也是基于cgroup构建的，<br>简单尝试<br>新建一个shell脚本<figure class="highlight shell"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br></pre><td class=code><pre><span class=line><span class="meta prompt_">#</span><span class=language-bash>!/bin/bash</span></span><br><span class=line>while true;do</span><br><span class=line> echo "1"</span><br><span class=line>done</span><br></pre></table></figure><p>直接执行的话就是单核100%的cpu<br><img data-src=https://img.nicksxs.me/blog/rFp7D1.jpg><p>首先在cgroup下面建个目录<figure class="highlight shell"><table><tr><td class=gutter><pre><span class=line>1</span><br></pre><td class=code><pre><span class=line>mkdir -p /sys/fs/cgroup/cpu/sxs_test/</span><br></pre></table></figure><p>查看目录下的文件<br><img data-src=https://img.nicksxs.me/blog/b6UwLR.jpg><br>其中cpuacct开头的表示cpu相关的统计信息，<br>我们要配置cpu的额度，是在cpu.cfs_quota_us中<figure class="highlight shell"><table><tr><td class=gutter><pre><span class=line>1</span><br></pre><td class=code><pre><span class=line>echo 2000 > /sys/fs/cgroup/cpu/sxs_test/cpu.cfs_quota_us </span><br></pre></table></figure><p>这样表示可以使用2%的cpu，总的配额是在cpu.cfs_period_us中<br><img data-src=https://img.nicksxs.me/blog/oikqB8.png><p>然后将当前进程输入到cgroup.procs,<figure class="highlight shell"><table><tr><td class=gutter><pre><span class=line>1</span><br></pre><td class=code><pre><span class=line>echo $$ > /sys/fs/cgroup/cpu/sxs_test/cgroup.procs</span><br></pre></table></figure><p>这样就会自动继承当前进程产生的新进程<br>再次执行就可以看到cpu被限制了<br><img data-src=https://img.nicksxs.me/blog/W0ptVg.png></div><footer class=post-footer><div class=post-eof></div></footer></article></div><nav class=pagination><a class="extend prev" 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