Centos 8 阿里yum源配置

1、CentOS-AppStream.repo配置文件，注释原有url，加入以下url

# CentOS-Linux-AppStream.repo
#
# The mirrorlist system uses the connecting IP address of the client and the
# update status of each mirror to pick current mirrors that are 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, you can try the commented out
# baseurl line instead.

[AppStream]

name=CentOS-$releasever - AppStream

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=AppStream&infra=$infra

baseurl=https://mirrors.aliyun.com/centos/8-stream/AppStream/x86_64/os/

gpgcheck=1

enabled=1

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial

2、编辑CentOS-Base.repo配置文件，注释原有url，加入以下url

# CentOS-Linux-BaseOS.repo
#
# The mirrorlist system uses the connecting IP address of the client and the
# update status of each mirror to pick current mirrors that are 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, you can try the commented out
# baseurl line instead.

[BaseOS]

name=CentOS-$releasever - Base

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=BaseOS&infra=$infra

baseurl=https://mirrors.aliyun.com/centos/8/extras/x86_64/os/

gpgcheck=1

enabled=1

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial

[root@master4-server yum.repos.d]# yum update
Last metadata expiration check: 0:00:09 ago on Mon 21 Mar 2022 08:45:44 PM CST.
Error:
 Problem 1: cannot install the best update candidate for package authselect-compat-1.2.2-2.el8.x86_64
  - nothing provides authselect(x86-64) = 1.2.2-3.el8 needed by authselect-compat-1.2.2-3.el8.x86_64
 Problem 2: cannot install the best update candidate for package bind-libs-lite-32:9.11.26-3.el8.x86_64
  - nothing provides libjson-c.so.4(JSONC_0.14)(64bit) needed by bind-libs-lite-32:9.11.36-3.el8.x86_64

解决方案：

yum update --allowerasing --skip-broken --nobest