服务器上的yum突然不好使用，使用yum的时候报错如下：

[[email protected] src]# yum list

......

Could not retrieve mirrorlist http://mirrorlist.repoforge.org/el6/mirrors-rpmforge error was

14: PYCURL ERROR 7 - "couldn't connect to host"

http://apt.sw.be/redhat/el6/en/x86_64/rpmforge/repodata/repomd.xml: [Errno 14] 

PYCURL ERROR 7 - "couldn't connect to host"

Trying other mirror.

Error: Cannot retrieve repository metadata (repomd.xml) for repository: rpmforge. 

Please verify its path and try again

 

解决办法：（或者把/etc/yum.repos.d下的文件全部删除，然后将能正常使用yum的同类服务器的这个目录下的文件全部拷贝过来，然后yum clean all 和yum makecache 即可）

下载新的CentOS-base.repo 到/etc/yum.repos.d/

[[email protected] src]# cd /etc/yum.repos.d/

其实就是将yum源更改为阿里云的yum源,操作如下：

 

1）centos5.*的下载连接：

[[email protected] yum.repos.d]# wget -O /etc/yum.repos.d/CentOS-base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

 

2）centos6.*的下载连接：

[[email protected] yum.repos.d]# wget -O /etc/yum.repos.d/CentOS-base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

 

3）centos7.*的下载连接：

[[email protected] yum.repos.d]# wget -O /etc/yum.repos.d/CentOS-base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

 

然后执行以下命令：

[[email protected] yum.repos.d]# rpm -e rpmforge-release --nodeps

-------------------------------------------------------------------------------------------------------------

如果报错：

error: package rpmforge-release is not installed

 

解决办法：安装这个源

下载地址：https://pan.baidu.com/s/1pKBtm11

提取密码：erte

[[email protected] yum.repos.d]# rpm -ivh rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm

-------------------------------------------------------------------------------------------------------------

 

[[email protected] yum.repos.d]# yum clean all 

[[email protected] yum.repos.d]# yum makecache                                   //将服务器上的软件包信息缓存到本地,以提高搜索安装软件的速度

[[email protected] yum.repos.d]# yum update

 

最后再次使用yum就ok了

[[email protected] yum.repos.d]# yum list