安装xxpackage时，出现 NO package bind available如下所示：
[root@host /]# yum -y install bind
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
Setting up Install Process
No package bind available.
用yum安装软件习惯了，感觉是把下载的哪个配置文件给弄坏了。于是在网上查资料终于找到了原因:Centos中有一个配置文件专门存各种软件下载信息，用yum安装时会自动找到软件镜像站点。听说好几千个。输入以下路径看下:
ls /etc/yum.repos.d/
我们会看到一个文件
CentOS-Base.repo
输入命令行
cat CentOS-Base.repo
结果为空。
首先备份/etc/yum.repos.d/CentOS-Base.repo
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
下载对应版本repo文件, 放入/etc/yum.repos.d/(操作前请做好相应备份)
运行yum makecache生成缓存。
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CentOS 6
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
CentOS 5
- wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo
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from:http://blog.csdn.net/liangliangdetianxia/article/details/35796709
