更换国内源+安装docker

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整个步骤记录

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
cd /etc/yum.repos.d/
wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
ls
mv CentOS7-Base-163.repo /etc/yum.repos.d/CentOS-Base.repo

运行以下命令生成缓存

yum clean all
yum makecache

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下载对应版本 repo 文件, 放入 /etc/yum.repos.d/ (操作前请做好相应备份)

• CentOS5 ：http://mirrors.163.com/.help/CentOS5-Base-163.repo
• CentOS6 ：http://mirrors.163.com/.help/CentOS6-Base-163.repo
• CentOS7 ：http://mirrors.163.com/.help/CentOS7-Base-163.repo

除了网易之外，国内还有其他不错的 yum 源，比如中科大和搜狐。

中科大的 yum 源，安装方法查看：https://lug.ustc.edu.cn/wiki/mirrors/help/centos

sohu 的 yum 源安装方法查看: http://mirrors.sohu.com/help/centos.html

阿里云的源：https://developer.aliyun.com/mirror/centos

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阿里云centos安装docker
在CentOS上安装Docker，可以遵循以下步骤：

更新软件包:
sudo yum update

安装Docker依赖的包:
sudo yum install -y yum-utils device-mapper-persistent-data lvm2

设置Docker仓库:
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

安装Docker CE (社区版):
sudo yum install docker-ce docker-ce-cli containerd.io

启动Docker服务:
sudo systemctl start docker

设置Docker开机自启:
sudo systemctl enable docker

验证Docker是否正确安装:
docker --version

安装docker

 

更换阿里云 docker源地址

yum-config-manager  --add-repo    https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

 

 报错信息

failure: repodata/repomd.xml from base: [Errno 256] No more mirrors to try.
http://mirrors.163.com/centos/7/os/x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found

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需要更换yum源

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

 

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1. 备份
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
2. 下载新的 CentOS-Base.repo 到 /etc/yum.repos.d/
centos8（centos8官方源已下线，建议切换centos-vault源）
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo
或者

curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo
centos6（centos6官方源已下线，建议切换centos-vault源）

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-6.10.repo
或者

curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-6.10.repo
CentOS 7

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
或者

curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
3. 运行 yum makecache 生成缓存