13.2 CentOS / RHEL（yum）

# 备份原配置
sudo cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak
# 替换为清华镜像源
sudo sed -e 's|^mirrorlist=|#mirrorlist=|g' \
-e 's|^#baseurl=http://mirror.centos.org/centos|baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos|g' \
-i.bak \
/etc/yum.repos.d/CentOS-*.repo
# 生成缓存
sudo yum makecache

或直接下载清华源配置：

# CentOS 7
sudo wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.tuna.tsinghua.edu.cn/help/CentOS-Vault-7.repo
# CentOS 8（已停止维护，使用 vault 源）
sudo wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.tuna.tsinghua.edu.cn/help/CentOS-Vault-8.repo
sudo yum makecache

# 备份原配置
sudo cp /etc/yum.repos.d/rocky.repo /etc/yum.repos.d/rocky.repo.bak
# 替换为清华镜像源
sudo sed -e 's|^mirrorlist=|#mirrorlist=|g' \
-e 's|^#baseurl=http://dl.rockylinux.org/$contentdir|baseurl=https://mirrors.tuna.tsinghua.edu.cn/rocky|g' \
-i.bak \
/etc/yum.repos.d/rocky*.repo
sudo dnf makecache