解决centos 6.3 yum安装软件时找不到镜像问题
[root@nagios-server ~]# yum update –y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was
14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.centos.org'"
Error: Cannot find a valid baseurl for repo: base
[root@nagios-server ~]# nslookup mirrorlist.centos.org
;; connection timed out; no servers couldbe reached
到这里发现问题了，域名解析不了，yum的配置文件里指向的域名就识别不了了。重新设置下dns指向。
[root@nagios-server ~]# vim /etc/resolv.conf
search 38forsbm
nameserver 8.8.8.8
nameserver 218.85.152.99
[root@nagios-server ~]# yum update –y --更新可以使用。