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README
Apache-2.0

Jenkins插件镜像工具

可以用来升级内网中的jenkins

功能

  • 和官方更新站点功能一致
  • 提前下载插件
  • 提前下载jenkins.war
  • 重新生成签名
  • 清理过期插件

工作目录

所有下载好的文件都放在 ./jenkins-update-site里面

jenkins-update-site

  • cache 从updates.jenkins-ci.org下载到的文件
  • download 插件目录
  • tools.txt 在其中写你要下载的工具的id
  • plugins.txt 待下载的插件列表
  • sha1.txt 检查下载文件
  • ..*.txt 各个工具下载地址

安装需求

  • jdk8 ( to run and cmopile java app )
  • maven ( to compile jar )
  • wget ( to download file )
  • shasum ( to execute sha1sum )

使用方法

安装

mvn package 

得到插件列表

java -jar target/*.jar pull

将会连接到jenkins主站下载插件列表, cache文件夹中会下载好东西

生成下载清单

java -jar target/*.jar update

将所有插件整理成文件下载清单,plugins.txt sha1.txt会保存待下载文件列表

下载插件

sh util.sh wget

调用wget批量下载文件

检查下载文件完整性

sh util.sh check  

检查下载文件的完整性(通过sha1sum),plugins.txt sha1.txt会删除下载完毕的文件,保留需要重新下载的文件。

重复执行wgetcheck直到所有文件下载成功。

清理插件

java -jar target/*.jar clean

清理过期的不在清单中的插件

启动http服务

java -jar target/*.jar server

启动http服务,供jenkins下载插件用。

访问首页会给出操作指导

改端口

java -jar target/*.jar server --server.port=8081

操作jenkins

  1. 复制certs/jenkins-update-site-cert.pem${JENKINS_HOME}/update-center-rootCAs/

  2. 打开jenkins,插件,advance,将 http://${host}:8080/update-center.json写到更新站点文本框,保存,立即检查

安装jenkins插件的其他方法:

除了网络直连,通过代理服务器连接以外还能通过以下方法更新插件:

人工下载 update-center.json,访问 http://updates.jenkins-ci.org/update-center.actual.json?id=default&version=2.121.1。

下载好文件之后,打开,将所有链接提取出来,使用wget下载好,放到任意http服务器上。

编辑json文件,将 jons['signature'] 删除,将所有url替换成你的http服务器地址。

将这个文件放在 ${JENKINS_HOME}/updates/default.json

重启jenkins,此时能够使用这个缓存的文件来下载插件。

参考资料

镜像站点: https://updates.jenkins-ci.org/

官方的update site 源码

介绍update site 目录结构

插件下载原理

  1. jenkins启动过程中会访问:http://updates.jenkins-ci.org/update-center.json?id=default&version=2.32.3
  2. url中的版本号会将url 重定向到一个镜像服务器,并且url会根据版本是否stable而发生变化, 例如302到:https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/stable-2.32/update-center.json
  3. 这个json文件实际上是一个jsonp,里面记录了jenkins程序的新版本url,所有插件的新版本的url和sha1值
  4. jenkins会下载从第三步得到的url,并解压安装

###Tools自动安装原理

tools的自动安装也是通过update site来进行的。 例如这个地址:https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/stable/updates/

以maven举例:

  1. 每种build工具在设计时会继承自动安装能力,生成id:hudson.tasks.Maven.MavenInstaller
  2. 服务启动时会尝试访问:https://updates.jenkins-ci.org/updates/hudson.tasks.Maven.MavenInstaller.json.html
  3. 从html中取出json,里面记录了版本号和下载地址
  4. 每当一个新的node要使用工具时会预先下载并解压(在pipeline脚本中还会提前设置path,以便shell中调用)

感谢清华大学 TUNA 协会 提供jenkins site mirror

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简介

私有jenkins update site镜像工具,在内网搭建插件下载站。 展开 收起
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