https://www.jenkins.io/download/
https://www.jenkins.io/zh/download/
Jenkins initial setup is required. An admin user has been created and a password generated.
Please use the following password to proceed to installation:
16f6da16948e438a9e46594fc54fdc6c
This may also be found at: /root/.jenkins/secrets/initialAdminPassword
部署jenkins服务器出现Please wait while Jenkins is getting ready to work ...一直进不去该怎么需要你进入jenkins的工作目录，打开-----hudson.model.UpdateCenter.xml将 url 中的
https://updates.jenkins.io/update-center.json
更改为https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json
是国内的清华大学的镜像地址。
或者更改为http://updates.jenkins.io/update-center.json，即去掉 https 中的 s 。
然后重启tomcat服务