最近适配了一堆linux系统，

Redhat4/5/6,

ubuntu 12/14/16,

Suse 10/11/12

其中适配到Red5 时候配置网络源

# The mirror system uses the connecting IP address of the client and the  
# update status of each mirror to pick mirrors that are updated to and  
# geographically close to the client.  You should use this for CentOS updates  
# unless you are manually picking other mirrors.  
#  
# If the mirrorlist= does not work for you, as a fall back you can try the   
# remarked out baseurl= line instead.  
#  
#  
 
 
[base]  
name=CentOS-5 - Base  
#mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=os  
#baseurl=http://mirror.centos.org/centos/5/os/$basearch/  
baseurl=http://vault.centos.org/5.11/os/$basearch/  
gpgcheck=1  
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5  
 
 
#released updates   
[updates]  
name=CentOS-5 - Updates  
#mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=updates  
#baseurl=http://mirror.centos.org/centos/5/updates/$basearch/  
baseurl=http://vault.centos.org/5.11/updates/$basearch/  
gpgcheck=1  
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5  
 
 
#additional packages that may be useful  
[extras]  
name=CentOS-5 - Extras  
#mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=extras  
#baseurl=http://mirror.centos.org/centos/5/extras/$basearch/  
baseurl=http://vault.centos.org/5.11/extras/$basearch/  
gpgcheck=1  
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5  
 
 
 
 
#additional packages that extend functionality of existing packages  
[centosplus]  
name=CentOS-5 - Plus  
#mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=centosplus  
#baseurl=http://mirror.centos.org/centos/5/centosplus/$basearch/  
baseurl=http://vault.centos.org/5.11/centosplus/$basearch/  
gpgcheck=1  
enabled=0  
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5  
 
 
 
 
#contrib - packages by Centos Users  
[contrib]  
name=CentOS-5 - Contrib  
#mirrorlist=http://mirrorlist.centos.org/?release=5&arch=$basearch&repo=contrib  
#baseurl=http://mirror.centos.org/centos/5/contrib/$basearch/  
baseurl=http://vault.centos.org/5.11/contrib/$basearch/  
gpgcheck=1  
enabled=0  
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5</span></strong></span>  

yum clean all
yum makecache

makecache报错，导入新的GPG-KEY再执行一次即可搞定
rpm –import http://centos.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-5

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