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这个错误引起主要是因为环境读取不到yun引起的可以考虑/etc/sysconfig/network-scripts/ifcfg-eth0 配置出错导致网络不通。或者/etc/resolv.conf的DNS配置出错。或者可以考虑清楚yum缓存影响（yum clean all）
（下面是网上找到比较有用资料）
今天在linux环境通过yum安装软件报了以下错误：
[root@multi-mysql yum.repos.d]# yum install ncurses devel -yLoaded plugins: fastestmirror, securityLoading mirror speeds from cached hostfileCould not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was14: PYCURL ERROR 6 - "Couldn‘t resolve host ‘mirrorlist.centos.org‘"Error: Cannot find a valid baseurl for repo: base |
从字面意义上看是不能解析mirrorlist.centos.org这个地址，应该是跟dns网络配置有关系，最后解决方法是在DNS域名解析的配置文件增加DNS服务器的IP地址：
[root@multi-mysql ~]# vim /etc/resolv.confnameserver 8.8.8.8nameserver 202.106.0.20 |
重启网络服务
[root@multi-mysql ~]# /etc/init.d/network restartShutting down interface eth0: [ OK ]Shutting down loopback interface: [ OK ]Bringing up loopback interface: [ OK ]Bringing up interface eth0: Determining if ip address 192.168.1.202 is already in use for device eth0... [ OK ] |
重新yum安装，正常
[root@multi-mysql ~]# yum install nmap -yLoaded plugins: fastestmirror, securityLoading mirror speeds from cached hostfile * base: mirrors.yun-idc.com * extras: mirrors.yun-idc.com * updates: mirrors.yun-idc.combase | 3.7 kB 00:00 base/primary_db | 4.6 MB 00:01 extras | 3.4 kB 00:00 extras/primary_db | 33 kB 00:00 updates | 3.4 kB 00:00 updates/primary_db | 2.6 MB 00:00 Setting up Install ProcessResolving Dependencies--> Running transaction check---> Package nmap.x86_64 2:5.51-4.el6 will be installed--> Finished Dependency Resolution......此处省略 |
解决Couldn't resolve host 'mirrorlist.centos.org
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原文地址：http://www.cnblogs.com/yaohaitao/p/5361639.html
