一.查询JDK版本与Jenkins版本对应关系：
https://pkg.jenkins.io/redhat-stable/
二.centos 7 安装JDK 1.8版本
略
三.下载并安装jenkins
wget https://repo.huaweicloud.com/jenkins/redhat-stable/jenkins-2.346.3-1.1.noarch.rpm
rpm -ivh jenkins-2.346.3-1.1.noarch.rpm
四.配置权限
vim /etc/sysconfig/jenkins
#修改配置
$JENKINS_USER="root"
五.修改jenkins启动默认端口8080(有需要可更改)
vi /etc/sysconfig/jenkins
JENKINS_PORT="8888"
六.启动Jenkins
cd /etc/init.d
#启动jenkins
./jenkins start
#重启jenkins
./jenkins restart
#停止jenkins
./jenkins stop