首先备份原来的源文件,防止更改失误可进行恢复。

[root@master ~]# cp -a /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak

CentOS-8的官方源安装方法:

[root@master ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo https://repo.huaweicloud.com/repository/conf/CentOS-8-reg.repo

由于CentOS-8的官方源已下线 请使用下方 CentOS-Vault 的源。

[root@master ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo https://repo.huaweicloud.com/repository/conf/CentOS-8-reg.repo

清除原有yum缓存。

[root@master ~]# yum clean all

刷新缓存

[root@master ~]# yum makecache

如需使用HighAvailability 请编辑文件

[root@master ~]# vim /etc/yum.repos.d/CentOS-Base.repo

增加以下内容

[HighAvailability]
name=CentOS-$releasever - pcs - repo.huaweicloud.com
baseurl=https://repo.huaweicloud.com/centos-vault/8.5.2111/HighAvailability/$basearch/os/
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/centos/RPM-GPG-KEY-CentOS-Official

清除原有yum缓存。

[root@master ~]# yum clean all

刷新缓存

[root@master ~]# yum makecache

查看centos-8.repo

[root@Master ~]# cat /etc/yum.repos.d/centos-8.repo 

[BaseOS]
name=CentOS-$releasever - Base - repo.huaweicloud.com
baseurl=https://repo.huaweicloud.com/centos-vault/8.5.2111/BaseOS/$basearch/os/
#mirrorlist=https://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=BaseOS&infra=$infra
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/centos/RPM-GPG-KEY-CentOS-Official

#released updates 
[AppStream]
name=CentOS-$releasever - AppStream - repo.huaweicloud.com
baseurl=https://repo.huaweicloud.com/centos-vault/8.5.2111/AppStream/$basearch/os/
#mirrorlist=https://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=AppStream&infra=$infra
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/centos/RPM-GPG-KEY-CentOS-Official

[PowerTools]
name=CentOS-$releasever - PowerTools - repo.huaweicloud.com
baseurl=https://repo.huaweicloud.com/centos-vault/8.5.2111/PowerTools/$basearch/os/
#mirrorlist=https://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=PowerTools&infra=$infra
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/centos/RPM-GPG-KEY-CentOS-Official

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - repo.huaweicloud.com
baseurl=https://repo.huaweicloud.com/centos-vault/8.5.2111/extras/$basearch/os/
#mirrorlist=https://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/centos/RPM-GPG-KEY-CentOS-Official

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - repo.huaweicloud.com
baseurl=https://repo.huaweicloud.com/centos-vault/8.5.2111/centosplus/$basearch/os/
#mirrorlist=https://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=https://repo.huaweicloud.com/centos/RPM-GPG-KEY-CentOS-Official

[HighAvailability]
name=CentOS-$releasever - pcs - repo.huaweicloud.com
baseurl=https://repo.huaweicloud.com/centos-vault/8.5.2111/HighAvailability/$basearch/os/
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/centos/RPM-GPG-KEY-CentOS-Official

查看docker-ce.repo

[root@Master ~]# cat /etc/yum.repos.d/docker-ce.repo 
[docker-ce-stable]
name=Docker CE Stable - $basearch
baseurl=https://repo.huaweicloud.com/docker-ce/linux/centos/$releasever/$basearch/stable
enabled=1
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/docker-ce/linux/centos/gpg

[docker-ce-stable-debuginfo]
name=Docker CE Stable - Debuginfo $basearch
baseurl=https://repo.huaweicloud.com/docker-ce/linux/centos/$releasever/debug-$basearch/stable
enabled=0
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/docker-ce/linux/centos/gpg

[docker-ce-stable-source]
name=Docker CE Stable - Sources
baseurl=https://repo.huaweicloud.com/docker-ce/linux/centos/$releasever/source/stable
enabled=0
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/docker-ce/linux/centos/gpg

[docker-ce-test]
name=Docker CE Test - $basearch
baseurl=https://repo.huaweicloud.com/docker-ce/linux/centos/$releasever/$basearch/test
enabled=0
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/docker-ce/linux/centos/gpg

[docker-ce-test-debuginfo]
name=Docker CE Test - Debuginfo $basearch
baseurl=https://repo.huaweicloud.com/docker-ce/linux/centos/$releasever/debug-$basearch/test
enabled=0
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/docker-ce/linux/centos/gpg

[docker-ce-test-source]
name=Docker CE Test - Sources
baseurl=https://repo.huaweicloud.com/docker-ce/linux/centos/$releasever/source/test
enabled=0
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/docker-ce/linux/centos/gpg

[docker-ce-nightly]
name=Docker CE Nightly - $basearch
baseurl=https://repo.huaweicloud.com/docker-ce/linux/centos/$releasever/$basearch/nightly
enabled=0
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/docker-ce/linux/centos/gpg

[docker-ce-nightly-debuginfo]
name=Docker CE Nightly - Debuginfo $basearch
baseurl=https://repo.huaweicloud.com/docker-ce/linux/centos/$releasever/debug-$basearch/nightly
enabled=0
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/docker-ce/linux/centos/gpg

[docker-ce-nightly-source]
name=Docker CE Nightly - Sources
baseurl=https://repo.huaweicloud.com/docker-ce/linux/centos/$releasever/source/nightly
enabled=0
gpgcheck=1
gpgkey=https://repo.huaweicloud.com/docker-ce/linux/centos/gpg