通过Homebrew
需注意的是，最新的Jenkins需要Java8的环境。
直接brew安装:
yul@MAC-LUOYU > brew install jenkins
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 1 tap (caskroom/cask).
No changes to formulae.
==> Using the sandbox
==> Downloading http://mirrors.jenkins-ci.org/war/2.70/jenkins.war
==> Downloading from http://mirrors.tuna.tsinghua.edu.cn/jenkins/war/2.70/jenkins.war
######################################################################## 100.0%
==> jar xvf jenkins.war
==> Caveats
Note: When using launchctl the port will be 8080.
To have launchd start jenkins now and restart at login:
brew services start jenkins
Or, if you don't want/need a background service you can just run:
jenkins
==> Summary
? /usr/local/Cellar/jenkins/2.70: 7 files, 72.2MB, built in 1 minute 48 seconds
快速又便捷，并给出使用的提示，
如果想启动Jenkins并且让它重启登录时自启动，使用命令:
brew services start jenkins
或如果你不想让它作为后台服务运行，可以直接使用命令:
jenkins
按照上面的提示开启Homebrew服务，并设置Jenkins随系统启动的服务:
yul@MAC-LUOYU > brew services start jenkins
==> Tapping homebrew/services
Cloning into '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-services'...
remote: Counting objects: 12, done.
remote: Compressing objects: 100% (8/8), done.
remote: Total 12 (delta 0), reused 7 (delta 0), pack-reused 0
Unpacking objects: 100% (12/12), done.
Tapped 0 formulae (40 files, 53.8KB)
==> Successfully started `jenkins` (label: homebrew.mxcl.jenkins)
配置
Jenkins启动后，默认端口号是8080，
可以直接访问例如本机http://localhost:8080
会显示首次登录的Unlock Jenkins页面
这里会要求一个初始的管理员密码验证，并告知了该密码在服务器上的位置，
所以可以:
cat ~/.jenkins/secrets/initialAdminPassword
安装的过程也很简介，有推荐的插件可以直接开启Jenkins，也可以手选自己需要的插件。
等待各个插件的安装完成..
最后会提示创建一个admin管理员账号:
