[root@centos-linux jenkins]# 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)
[root@centos-linux jenkins]#
如果未安装则通过以下命令进行安装
yum install -y java-1.8.0
cd /etc/yum.repos.d/
wget http://pkg.jenkins.io/redhat/jenkins.repo
#导入rpm jkenkins秘钥
[root@jenkins ~]# rpm --import http://pkg.jenkins.io/redhat/jenkins.io.key
#安装 [root@jenkins ~]# yum install -y jenkins
root@centos-linux jenkins]# rpm -ql jenkins /etc/init.d/jenkins /etc/logrotate.d/jenkins /etc/sysconfig/jenkins /usr/lib/jenkins /usr/lib/jenkins/jenkins.war /usr/sbin/rcjenkins /var/cache/jenkins /var/lib/jenkins /var/log/jenkins
可以进行端口 和jvm参数配置 此处我把端口改为了8000
vim /etc/sysconfig/jenkins
JENKINS_JAVA_OPTIONS="-Djava.awt.headless=true"
JENKINS_PORT="8000"
[root@centos-linux jenkins]# which java /usr/bin/java [root@centos-linux jenkins]# ls -lrt /usr/bin/java lrwxrwxrwx. 1 root root 22 Oct 29 09:25 /usr/bin/java -> /etc/alternatives/java
vim /etc/rc.d/init.d/jenkins 在以下增加配置
candidates=" /etc/alternatives/java /usr/lib/jvm/java-1.8.0/bin/java /usr/lib/jvm/jre-1.8.0/bin/java /usr/lib/jvm/java-1.7.0/bin/java /usr/lib/jvm/jre-1.7.0/bin/java /usr/lib/jvm/java-11.0/bin/java /usr/lib/jvm/jre-11.0/bin/java /usr/lib/jvm/java-11-openjdk-amd64 /usr/bin/java "
/sbin/iptables -I INPUT -p tcp --dport 8000 -j ACCEPT
service jenkins start
如果启动报错通过以下命令查看启动信息 针对错误做处理
systemctl status jenkins.service
systemctl stop jenkins
使用以下命令查看密码
vi /var/lib/jenkins/secrets/initialAdminPassword
14.安装插件
因为不熟悉 所以选择推荐插件进行安装
原文：https://www.cnblogs.com/LQBlog/p/13895250.html