1.安装jdk，略过
2.下载安装文件
地址：mirrors.jenkins-ci.org/redhat/ 我这里下载的是2.346
3.卸载旧的Jenkins
rpm -qa | grep jenkins find / -iname jenkins | xargs -n 1000 rm -rf
4.安装Jenkins
rpm -ivh jenkins-2.46.2-1.1.noarch.rpm
5.修改Jenkins配置文件中的jdk地址
vim /etc/init.d/jenkins
6.修改默认用户或者端口号
vim /etc/sysconfig/jenkins
7.启动Jenkins
systemctl start jenkins
8.查看Jenkins默认密码
cat /var/lib/jenkins/secrets/initialAdminPassword
