安装java11
yum install java-11-openjdk* -y
查看是否安装成功，出现版本号即为成功
java -version
3.启用Jenkins存储库，下载并导入GPG密钥
sudo wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat-stable/jenkins.repo
sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
4.安装jenkins
yum install jenkins
5.防火墙打开8080端口
firewall-cmd --permanent --zone=public --add-port=8080/tcp
systemctl reload firewalld
6.运行jenkins
service jenkins start
此时已经可以访问了，ip:8080访问jenkin，按照提示输入密码
7.修改端口号
vim /usr/lib/systemd/system/jenkins.service
修改 Environment="JENKINS_PORT=8081"
systemctl daemon-reload
再次访问就是ip:8081,记得防火墙打开对应的端口号
8.部署项目需要git拉取代码，还需要安装一下git
yum install git
