jenkins官网：https://pkg.jenkins.io/redhat-stable/
步骤：
1.sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo --no-check-certificate
2.sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
3.yum install fontconfig java-11-openjdk （安装JDK）
4.yum install jenkins
5.配置端口
vi /etc/syscofig/jenkins
修改端口如下：
JENKINS_PORT="8888"
6.启动命令：systemctl start jenkins
