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CentOS yum时出现“Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=5&arch=i386&repo=addons error ”错误：[root@server mysql-5.0.56]# yum install gcc Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=5&arch=i386&repo=addons error was [Errno 4] IOError: <urlopen error (-3, '\xe5\x9f\x9f\xe5\x90\x8d\xe8\xa7\xa3\xe6\x9e\x90\xe6\x9a\x82\xe6\x97\xb6\xe5\xa4\xb1\xe8\xb4\xa5')> Error: Cannot find a valid baseurl for repo: addons 发现原来是没有配置resolv.conf，于是到/etc目录下配置resolv.conf加入nameserver IP： [root@server mysql-5.0.56]# vi /etc/resolv.conf nameserver 218.85.157.99 search localdomain 保存resolv.conf，再次运行上面命令就可以。 [root@server mysql-5.0.56]# yum install gcc Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.ustc.edu.cn * extras: centos.ustc.edu.cn * updates: centos.ustc.edu.cn addons | 951 B 00:00 addons/primary | 202 B 00:00 base | 1.1 kB 00:00 base/primary | 961 kB 00:06 base 2705/2705 extras | 2.1 kB 00:00 extras/primary_db | 171 kB 00:00 updates | 1.9 kB 00:00 .......................................................................................... ................................................................................. ................................................................ (责任编辑：IT) |