jenkins是通用的持续集成工具，应用非常广泛。下面开始在服务器安装jenkins，记录安装过程。

1、添加yum repos，然后安装

sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat/jenkins.reposudo rpm --import https://pkg.jenkins.io/redhat/jenkins.io.key

sudo yum install jenkins

2、如果未安装java还需安装java

3、启动和停止

sudo service jenkins startsudo service jenkins stopsudo service jenkins restart

4、如果启动报错，通常是因为配置文件设置的jdk环境不对。修改配置文件  

vi /etc/rc.d/init.d/jenkins

找到如下相似地方：

# Search usable Java as /usr/bin/java might not point to minimal version required by Jenkins.

# see http://www.nabble.com/guinea-pigs-wanted-----Hudson-RPM-for-RedHat-Linux-td25673707.html 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/bin/java

可以把自己本机java路径加入进来。

 

5、如果提示权限问题，可以修改默认USER或者修改文件owner，简单起见我们直接把默认用户从jenkins换成root。

当然，安全起见，真实的线上环境不建议这么操作。

修改配置文件  /etc/sysconfig/jenkins

修改下面的参数为相应的用户，比如JENKINS_USER="root"

## Type:        string

## Default:     "jenkins" ## ServiceRestart: jenkins # # Unix user account that runs the Jenkins daemon # Be careful when you change this, as you need to update # permissions of $JENKINS_HOME and /var/log/jenkins. # JENKINS_USER="jenkins"

 

6、修改相应文件或目录的权限

/var/lib/jenkins/

/var/log/jenkins/ /var/cache/jenkins/ /usr/lib/jenkins/jenkins.war /etc/sysconfig/jenkins

chown -R root:root /var/lib/jenkins/chown -R root:root /var/log/jenkins/chown -R root:root /var/cache/jenkins/chown root:root /usr/lib/jenkins/jenkins.warchown root:root /etc/sysconfig/jenkins

 

7、重启jenkins：service jenkins restart

8、修改端口号:

vim /etc/sysconfig/jenkins

找到类似：

## Type:        integer(0:65535)

## Default:     8080 ## ServiceRestart: jenkins # # Port Jenkins is listening on. # Set to -1 to disable # JENKINS_PORT="8080"

直接将默认8080修改为自己指定的端口即可。

 

登陆时默认初始密码地址：

/var/lib/jenkins/secrets/initialAdminPassword