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

Linux centos7安裝Jenkins( jenkins-2.227-1.1.noarch.rpm)時遇到問題：

1.  出現問題1：安裝jenkins一直失敗，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

-->緣由：以前已經有了/etc/sysconfig/jenkins

解決方法：

進入/etc/sysconfig，刪除掉jenkins，從新安裝.

rm -rf jenkins

備註：sudo是由於不是root用戶，無權限，因此使用sudo

若是是root用戶，則不須要，直接rpm -ivh jenkins-2.227-1.1.noarch.rpm