安装Jenkins，提示：stat: cannot stat ‘/var/cache/jenkins

Linux centos7安装Jenkins( jenkins-2.227-1.1.noarch.rpm)时遇到问题：

1.  出现问题1：安装jenkins一直失败，提示No such file or directory

[helen@linuxprobe Jenkins]$ sudo rpm -ivh jenkins-2.227-1.1.noarch.rpm

Preparing...                          ################################# [100%]

stat: cannot stat ‘/var/cache/jenkins’: No such file or directory

stat: cannot stat ‘/var/log/jenkins’: No such file or directory

stat: cannot stat ‘/var/lib/jenkins’: No such file or directory

error: %pre(jenkins-2.227-1.1.noarch) scriptlet failed, exit status 1

error: jenkins-2.227-1.1.noarch: install failed

-->缘由：以前已经有了/etc/sysconfig/jenkins

解决方法：

进入/etc/sysconfig，删除掉jenkins，从新安装.

rm -rf jenkins

备注：sudo是由于不是root用户，无权限，因此使用sudo

若是是root用户，则不须要，直接rpm -ivh jenkins-2.227-1.1.noarch.rpm