阿里云各系统镜像
Ubuntu 22.04.1 apt源
备份默认源
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
替换阿里源
sudo tee /etc/apt/sources.list << ERIC
#deb cdrom:[Ubuntu 22.04.2 LTS _Jammy Jellyfish_ - Release amd64 (20230223)]/ jammy main restricted
##
##
deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
# deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
# deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
# deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
# deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse
ERIC
更新软件包
sudo apt update
CentOS 7 yum源
将本机yum源修改为阿里云源
# 备份 CentOS-Base.repo
[root@test1 ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
# 下载阿里云源
[root@test1 ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
[root@test1 ~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
# 删除无用内容
[root@test1 ~]# sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
[root@test1 ~]# sed -i '/aliyuncs/d' /etc/yum.repos.d/epel.repo
# 阿里云建议普通用户使用/7/, 而不使用/7.6.1810/这种小版本, 所以替换阿里云源的版本
[root@test1 ~]# sed -i 's/$releasever/7/g' /etc/yum.repos.d/CentOS-Base.repo
# 更新源
[root@test1 ~]# yum clean all && yum makecache all
# 更新系统(可选)
[root@test1 ~]# yum update -y
直接用
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
sed -i '/aliyuncs/d' /etc/yum.repos.d/epel.repo
sed -i 's/$releasever/7/g' /etc/yum.repos.d/CentOS-Base.repo
yum clean all && yum makecache all && yum update -y
yum源 修复
# 删除所有源
[root@test1 ~]# rm -rf /etc/yum.repos.d/*
[root@test1 ~]#
# 查看当前系统
[root@test1 yum.repos.d]# cat /etc/redhat-release
CentOS Linux release 7.7.1908 (Core)
[root@test1 yum.repos.d]#
根据自己的操作系统 http://mirror.centos.org/centos-7/ 从这个路径一点一点往下找，直到找到自己的yum源配置位置，例如：
http://mirror.centos.org/centos-7/7.9.2009/os/x86_64/Packages/centos-release-7-9.2009.0.el7.centos.x86_64.rpm
[root@test1 yum.repos.d]# rpm -Uvh --force http://mirror.centos.org/centos-7/7.7.1908/os/x86_64/Packages/centos-release-7-7.1908.0.el7.centos.x86_64.rpm
[root@test1 yum.repos.d]#
##### 注意：重新换源，必需要下面这两步，否则什么都安装不了
# 重新安装 epel-release
[root@test1 yum.repos.d]# yum remove -y epel-release && yum install -y epel-release
# 重新缓存
[root@test1 yum.repos.d]# yum clean all && yum makecache all && yum update -y