更新软件，安装桌面

 yum -y update

 yum -y groupinstall "X Window System"

 yum -y groupinstall gnome

 yum -y install firefox

 添加用户，安装tigervnc-server并进行相应配置

 sudo useradd awsgui

 sudo passwd awsgui

 yum -y install tigervnc-server

 vncserver

 vi /root/.vnc/xstartup

 vi /etc/sysconfig/vncservers

 vncserver

 检查java版本，下载jenkins

 java -version

 yum -y install wget

 wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.repo

 rpm --import https://jenkins-ci.org/redhat/jenkins-ci.org.key

 yum install jenkins -y

 chkconfig jenkins on

 检查jenkins相应服务和日志

 service jenkins start

 service jenkins stop

 service jenkins restart

 service jenkins status

 tailf  /var/log/jenkins/jenkins.log

 cat /etc/yum.repos.d/jenkins.repo

 防火墙配置修改（京东云默认没有打开防火墙。。。）

 #firewall-cmd --zone=public --add-port=/tcp --permanent

 cat /var/lib/jenkins/secrets/initialAdminPassword