redhat6.6 64位系统安装yum（二）_redhat6.6 安装yum

感谢博主分享，原文链接：https://blog.csdn.net/qq_37791764/article/details/78966277

redhat默认自带的yum源需要注册，才能更新，报错： 
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager 
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. 
http://mirrors.163.com/centos/6Server/os/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - “The requested URL returned error: 404 Not Found” 
Trying other mirror. 
可替换为centos对应的源。

CentOS6-Base-163.repo 替换后的文件内容（）

# CentOS-Base.repo
#
# 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-6 - Base - 163.com
baseurl=http://mirrors.163.com/centos/6/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
 
#released updates 
[updates]
name=CentOS-6 - Updates - 163.com
baseurl=http://mirrors.163.com/centos/6/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
 
#additional packages that may be useful
[extras]
name=CentOS-6 - Extras - 163.com
baseurl=http://mirrors.163.com/centos/6/extras/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
 
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-6 - Plus - 163.com
baseurl=http://mirrors.163.com/centos/6/centosplus/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
 
#contrib - packages by Centos Users
[contrib]
name=CentOS-6 - Contrib - 163.com
baseurl=http://mirrors.163.com/centos/6/contrib/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=contrib
gpgcheck=1
enabled=0
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

更换yum源，将原有源删除或备份到别的目下下：

cd /etc/yum.repos.d/ 
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo 
vi CentOS6-Base-163.repo 编辑文件，把文件里面的$releasever全部替换为版本号：6（注意，不是6.5！）最后保存！ 
替换命令： %s/$releasever/6/g 

清除原有缓存，重建缓存： 
#yum clean all 
#yum makecache

更新系统（以上步骤完成后可先尝试yum是否能用， 不能用在使用该命令。 该命令执行很长时间）
#yum update