yum安装时出现
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again or 14: PYCURL ERROR 6 - "Couldn't resolvehost 'mirrorlist.centos.org'" or [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404" or removing mirrorlist with no valid mirrors: //var/cache/yum/fedora/mirrorlist.txt Error: Cannot retrieve repository metadata (repomd.xml) for repository: fedora. Please verify its path and try again
可能是yum源出问题，或者网连不上。
1、先试试网络能连上不，可能ping得通wget没结果
wget www.google.com
如果连不上，先检查网络
2、改yum配置，这里改为163的源
cd /etc/yum.repos.d
[root@localhost yum.repos.d]# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
[root@localhost yum.repos.d]# cp CentOS-Base.repo CentOS-Base.repo.bak
将CentOS6-Base-163.repo的内容复制到CentOS-Base.repo
注意将里面的$releasever 换成Centos的版本6
如下：
# CentOS-Base.repo # # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client. You should use this for CentOS updates # unless you are manually picking other mirrors. # # If the mirrorlist= does not work for you, as a fall back you can try the # remarked out baseurl= line instead. # # [base] name=CentOS-$releasever - Base - 163.com #baseurl=http://mirrors.163.com/centos/$releasever/os/$basearch/ baseurl=http://mirrors.163.com/centos/6/os/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #released updates [updates] name=CentOS-$releasever - Updates - 163.com #baseurl=http://mirrors.163.com/centos/$releasever/updates/$basearch/ baseurl=http://mirrors.163.com/centos/6/updates/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras - 163.com #baseurl=http://mirrors.163.com/centos/$releasever/extras/$basearch/ baseurl=http://mirrors.163.com/centos/6/extras/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras gpgcheck=1 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-$releasever - Plus - 163.com #baseurl=http://mirrors.163.com/centos/$releasever/centosplus/$basearch/ baseurl=http://mirrors.163.com/centos/6/centosplus/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus gpgcheck=1 enabled=0 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #contrib - packages by Centos Users [contrib] name=CentOS-$releasever - Contrib - 163.com #baseurl=http://mirrors.163.com/centos/$releasever/contrib/$basearch/ baseurl=http://mirrors.163.com/centos/6/contrib/$basearch/ #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib gpgcheck=1 enabled=0 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6