CentOS8.5更换阿里源步骤

清理并备份原有仓库配置

cd /etc/yum.repos.d/
mkdir backup
mv *.repo backup/

使用国内镜像源加速

cat <<EOF > /etc/yum.repos.d/CentOS-Vault.repo
[base]
name=CentOS-8 - Base
baseurl=https://mirrors.aliyun.com/centos-vault/8.5.2111/BaseOS/x86_64/os/
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-Official
enabled=1

[appstream]
name=CentOS-8 - AppStream
baseurl=https://mirrors.aliyun.com/centos-vault/8.5.2111/AppStream/x86_64/os/
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-Official
enabled=1

[extras]
name=CentOS-8 - Extras
baseurl=https://mirrors.aliyun.com/centos-vault/8.5.2111/extras/x86_64/os/
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos-vault/RPM-GPG-KEY-CentOS-Official
enabled=1
EOF

或者使用官方源

cat <<EOF > /etc/yum.repos.d/CentOS-Vault.repo
[base]
name=CentOS-8 - Base
baseurl=http://vault.centos.org/8.5.2111/BaseOS/x86_64/os/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
enabled=1

[appstream]
name=CentOS-8 - AppStream
baseurl=http://vault.centos.org/8.5.2111/AppStream/x86_64/os/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
enabled=1

[extras]
name=CentOS-8 - Extras
baseurl=http://vault.centos.org/8.5.2111/extras/x86_64/os/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
enabled=1
EOF

清理 YUM 缓存并重新生成

yum clean all
yum makecache