安装jdk

[root@192 alvin]# yum install java-1.8.0-openjdk* -y

检查是否安装成功

[root@192 alvin]# java -version
openjdk version "1.8.0_262"
OpenJDK Runtime Environment (build 1.8.0_262-b10)
OpenJDK 64-Bit Server VM (build 25.262-b10, mixed mode)

安装好的路径

/usr/lib/jvm

官网安装Jenkins

wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
yum install jenkins -y

修改Jenkins配置

vi /etc/sysconfig/jenkins
JENKINS_USER = "root"
JENKINS_PORT = "8083"
systemctl start jenkins

访问Jenkins

打开http://http://192.168.206.128/:8083
注意：如果防火墙开启了，那么需要在防火墙上添加端口
开启端口

[root@centos7 ~]# firewall-cmd --zone=public --add-port=80/tcp --permanent

查询端口号80 是否开启：

[root@centos7 ~]# firewall-cmd --query-port=80/tcp

重启防火墙：

[root@centos7 ~]# firewall-cmd --reload

查询有哪些端口是开启的:

[root@centos7 ~]# firewall-cmd --list-port

获取并输入admin账号密码

cat /var/lib/jenkins/secrets/initialAdminPassword