如何完全卸载Mac上pkg方式安装的jenkins并使用brew命令重新安装

官方提示native安装方式过时：

方法一：直接使用Uninstall.command命令删除（推荐）

$ /Library/Application\ Support/Jenkins/Uninstall.command

Jenkins uninstallation script

The following commands are executed using sudo, so you need to be logged
in as an administrator. Please provide your password when prompted.

+ sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plist
Password:
+ sudo rm /Library/LaunchDaemons/org.jenkins-ci.plist
+ sudo rm -rf /Applications/Jenkins '/Library/Application Support/Jenkins' /Library/Documentation/Jenkins
+ sudo rm -rf /Users/Shared/Jenkins
+ sudo rm -rf /var/log/jenkins
+ sudo rm -f /etc/newsyslog.d/jenkins.conf
+ sudo dscl . -delete /Users/jenkins
+ sudo dscl . -delete /Groups/jenkins
+ pkgutil --pkgs
+ grep 'org\.jenkins-ci\.'
+ xargs -n 1 sudo pkgutil --forget
Forgot package 'org.jenkins-ci.support.pkg' on '/'.
Forgot package 'org.jenkins-ci.jenkins21901.postflight.pkg' on '/'.
Forgot package 'org.jenkins-ci.documentation.pkg' on '/'.
Forgot package 'org.jenkins-ci.launchd-jenkins.pkg' on '/'.
Forgot package 'org.jenkins-ci.jenkins.osx.pkg' on '/'.
+ set +x

Jenkins has been uninstalled.

方法二：手动删除（不推荐，因为可能会漏掉某些文件）

1、到应用程序删除jenkins整个目录
2、删除jenkins开机启动配置文件

$ rm -f /Library/LaunchDaemons/org.jenkins-ci.plist

3、删除启动命令等文件

$ rm -f /Library/Application Support/Jenkins/jenkins-runner.sh
$ rm -f /Library/Application Support/Jenkins/Uninstall.command

4、删除日志文件目录

$ rm -rf /var/log/jenkins

5、删除配置文件

$ rm -f /etc/newsyslog.d/jenkins.conf

6、删除工作目录

$ rm -rf /Users/Shared/Jenkins

7、删除jenkins用户

系统偏好设置>用户与群组>jenkins

Brew命令安装jenkins

删除完后我们就可以使用brew命令重新安装jenkins了

$ brew install jenkins

brew相关其他命令

安装指定版本:brew install jenkins@YOUR_VERSION
启动jenkins服务:brew services start jenkins
重启Jenkins服务:brew services restart jenkins
升级jenkins:brew upgrade jenkins
完全卸载jenkins:
brew uninstall jenkins --force
brew cleanup
rm -rf /Users/[用户名]/.jenkins //注意：完全重新安装必须执行这一步，目的是为了删除以前的历史配置，否则以前的配置还在，重装过后还是原来的样子

Brew方式相关路径

Brew方式安装后的工作目录、日志文件、配置文件路径如下：
安装目录：/usr/local/Cellar/jenkins/2.213
配置文件：/usr/local/Cellar/jenkins/2.213/homebrew.mxcl.jenkins.plist
日志路径：待发现
工作目录：~/.jenkins

PKG方式安装相关路径可以参考这里：https://www.bootschool.net/article/5d5775d

修改jenkins默认端口

$ brew services list
Name              Status  User Plist
jenkins           started hfy  /Users/luke/Library/LaunchAgents/homebrew.mxcl.jenkins.plist
mongodb-community stopped      
mysql             stopped      
nginx             stopped      
redis             stopped

brew方式安装你可能也会跟我一样找到几个配置文件：
/Users/luke/Library/LaunchAgents/homebrew.mxcl.jenkins.plist
/usr/local/opt/jenkins/homebrew.mxcl.jenkins.plist
/usr/local/Cellar/jenkins/2.213/homebrew.mxcl.jenkins.plist

注意：并不是修改任何一个配置文件都可以成功。opt目录下的文件是使用安装目录软链接过去，所以不能修改这个目录下的文件。而LaunchAgents目录下的配置文件是拷贝过去的，也不能修改这个文件(已试过、但是失败了)。最后剩下的就是安装目录下的配置文件了，修改这个文件能够成功，并且其它目录下的都会被这个文件覆盖掉。

$ vi /usr/local/Cellar/jenkins/2.213/homebrew.mxcl.jenkins.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>Label</key>
    <string>homebrew.mxcl.jenkins</string>
    <key>ProgramArguments</key>
    <array>
      <string>/usr/libexec/java_home</string>
      <string>-v</string>
      <string>1.8</string>
      <string>--exec</string>
      <string>java</string>
      <string>-Dmail.smtp.starttls.enable=true</string>
      <string>-jar</string>
      <string>/usr/local/opt/jenkins/libexec/jenkins.war</string>
      <string>--httpListenAddress=127.0.0.1</string>
      <string>--httpPort=8888</string> //在这里修改端口号即可
    </array>
    <key>RunAtLoad</key>
    <true/>
  </dict>
</plist>

修改完后记得重启服务

$ brew services restart jenkins

jenkins插件加速

$ cd /Users/[用户名]/.jenkins/updates  #进入更新的配置文件所在位置
或者
$ cd ~/.jenkins/updates

$ cp default.json default.json_backup  //备份默认配置文件

使用sed替换内容：

$ sed -i 's#http://updates.jenkins-ci.org/download#https://mirrors.tuna.tsinghua.edu.cn/jenkins#g' default.json && sed -i 's#http://www.google.com#https://www.baidu.com#g' default.json

修改完后保存并重启jenkins即可。