以前搭建spring-cloud的时候 看到别人代码里面总有Dockerfile，然后了解到Docker容器的概念，玩了两个星期玩不下去了，就放下了，无意间在网上看到一篇文章Docker持续部署，就想着自己也搭建一套玩玩。
流程
网上那篇文章介绍的流程涉及到多个docker镜像，我这里为了入门就简单化了。
自动化部署效果就是： 你修改了本地的代码 然后push到git上面，git的webhook功能会给jenkins post一个请求，jenkins接收到请求后，就进行打包部署操作，细节下面会说。
docker部署jenkins
docker 怎么安装使用可以参考以前博客。
docker启动：
<code class="hljs nginx has-numbering" style="display: block; padding: 0px; background-color: transparent; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; word-wrap: normal; background-position: initial initial; background-repeat: initial initial;"><span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">sudo</span> route del -net <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">172.16.0.0</span> netmask <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">255.240.0.0</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul>
<code class="hljs bash has-numbering" style="display: block; padding: 0px; background-color: transparent; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; word-wrap: normal; background-position: initial initial; background-repeat: initial initial;"><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">sudo</span> service docker start</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul>
镜像地址：https://hub.docker.com/jenkins/
jenkins docker官网有提供image的 直接pull下来就可以了。
jenkisn安装步骤：
拉取镜像
<code class="hljs css has-numbering" style="display: block; padding: 0px; background-color: transparent; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; word-wrap: normal; background-position: initial initial; background-repeat: initial initial;"><span class="hljs-tag" style="color: rgb(0, 0, 0); box-sizing: border-box;">docker</span> <span class="hljs-tag" style="color: rgb(0, 0, 0); box-sizing: border-box;">pull</span> <span class="hljs-tag" style="color: rgb(0, 0, 0); box-sizing: border-box;">jenkins</span><span class="hljs-pseudo" style="color: rgb(0, 0, 0); box-sizing: border-box;">:latest</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul>
这种方式启动会存储数据，-t 标示以后台模式运行，-p标示容器和宿主服务器之间的开放端口号 -v表示需要将本地哪个目录挂载到容器中，格式：-v <宿主机目录>:<容器目录>
运行容器
<code class="hljs lasso has-numbering" style="display: block; padding: 0px; background-color: transparent; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; word-wrap: normal; background-position: initial initial; background-repeat: initial initial;">docker run <span class="hljs-attribute" style="box-sizing: border-box;">-t</span> <span class="hljs-attribute" style="box-sizing: border-box;">-p</span> <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8080</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8080</span> <span class="hljs-attribute" style="box-sizing: border-box;">-p</span> <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8083</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8083</span> <span class="hljs-attribute" style="box-sizing: border-box;">-p</span> <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">50000</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">50000</span> <span class="hljs-attribute" style="box-sizing: border-box;">-v</span> /<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">var</span>/jenkins_home:/<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">var</span>/jenkins_home jenkins</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul>
运行成功之后，我们输入http://ip:8080/ 就可以访问到了
jenkins的注意事项
权限问题，具体细节可以百度，我们可以先开发用户注册功能，然后注册一个用户，然后给注册的用户开放所有的权限，匿名的用户权限勾掉。需要注意一点的就是 git的webhok功能也需要权限，所以我们配置安全矩阵的时候要开发匿名用户的访问job的权限，不然git的webhok功能无法使用
系统配置
在全局属性里面新增：BUILD_ID=DONTKILLME 这个键值对非常重要，如果不配置 无论你怎么运行Java -jar *.jar & 项目都无法后台运行，因为一旦jenkins 部署成功执行完shell 就会把其他的进程都干掉。
maven jdk都要配置下
- 插件安装
git/Publish over SSH 都要按照然后配置 项目配置
- shell 主要实现kill 原有的java进程和运行新的jar
<code class="hljs perl has-numbering" style="display: block; padding: 0px; background-color: transparent; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-top-left-radius: 0px; border-top-right-radius: 0px; border-bottom-right-radius: 0px; border-bottom-left-radius: 0px; word-wrap: normal; background-position: initial initial; background-repeat: initial initial;">projectName=<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"dockerjenkins.jar"</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">#kill</span>ps -ef | <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">grep</span> -v <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'grep'</span> | <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">grep</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'dockerjenkins.jar'</span> | awk <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'{print $2}'</span>| xargs <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">kill</span> -<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">9</span>ps -ef|<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">grep</span> javaecho <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"start <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">${projectName}</span>"</span>java -jar <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$WORKSPACE</span>/target/<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">${projectName}</span> &</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li></ul>git webhoks
git项目地址：https://github.com/ggj2010/dockerjenkins.git
webhoks配置：
这个url 和jenkins配置项目的地址一致 可以看前面截图触发远程构建
参考网址：http://www.thinksaas.cn/group/topic/378471/
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