centos安装jenkins

# 安装jenkins

# 前提已安装JDK

# 去jenkins官网获取安装方法

sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo

sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key

yum install jenkins

# 启动Jenkins

# 启动报错

# 修改Jenkins启动配置文件，指定java安装路径

vim /etc/init.d/jenkins

# 在candidates中第一行添加java路径，如下

candidates="
/opt/java/jdk1.8.0_51/bin/java

service jenkins start

# 在浏览器中访问 http://$IP:8080/

# 首次进入会要求输入初始密码如下图

# 初始密码在/var/lib/jenkins/secrets/initialAdminPassword

cat /var/lib/jenkins/secrets/initialAdminPassword

# This Jenkins instance appears to be offline

In my case, it has something to do with SSL. I manage to fix it by editing `/var/lib/jenkins/hudson.model.UpdateCenter.xml` and change url to use `http` instead of `https`.Restart jenkins and reload the website, it no longer shows offline.

cat /var/lib/jenkins/hudson.model.UpdateCenter.xml

vim /var/lib/jenkins/hudson.model.UpdateCenter.xml

service jenkins restart

# 选择“Install suggested plugins”安装默认的插件，下面Jenkins就会自己去下载相关的插件进行安装。 

# 创建超级管理员账号 

# 相关配置

# Jenkins安装目录

/var/lib/jenkins

# Jenkins配置文件地址

cat /etc/sysconfig/jenkins

# 三个比较重要的配置

JENKINS_HOME是Jenkins的主目录，Jenkins工作的目录都放在这里,Jenkins储存文件的地址,Jenkins的插件，生成的文件都在这个目录下。

JENKINS_USER是Jenkins的用户，拥有$JENKINS_HOME和/var/log/jenkins的权限。

JENKINS_PORTJENKINS_PORT是Jenkins的端口，默认端口是8080。