linux centos7 替换yum源

喜欢ヅ旅行 2021-07-28 20:26 399阅读 0赞

### 替换默认源 ###

替换源：

默认的源是国外的源，国外的源有可能打开比较慢有可能打不开所以要替换源。

国内很多厂商做了镜像我们现在使用163的源。

[http://mirrors.163.com/.help/centos.html][http_mirrors.163.com_.help_centos.html]

1.首先备份repo

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2.查看到备份的repo

cd /etc/yum.repos.d/                
    ll

3.安装CentOS 7 下载对应版本的 repo 放入到 /etc/yum.repos.d/CentOS-Base.repo

curl http://mirrors.163.com/.help/CentOS7-Base-163.repo -o CentOS7-Base-163.repo

4.运行下面命令生成缓存

yum clean all             
    yum makecache

5.测试

yum -y update

### 修改yum源为阿里 ###

1. 备份本地yum源

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bak

2.获取阿里yum源配置文件

配置文件地址：[https://mirrors.tuna.tsinghua.edu.cn/help/centos/][https_mirrors.tuna.tsinghua.edu.cn_help_centos]

将以下内容写入 /etc/yum.repos.d/CentOS-Base.repo

配置文件内容如下：

# CentOS-Base.repo
    #
    # The mirror system uses the connecting IP address of the client and the
    # update status of each mirror to pick mirrors that are updated to and
    # 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, as a fall back you can try the
    # remarked out baseurl= line instead.
    #
    #
    
    [base]
    name=CentOS-$releasever - Base
    baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/os/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
    gpgcheck=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
    
    #released updates
    [updates]
    name=CentOS-$releasever - Updates
    baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/updates/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
    gpgcheck=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
    
    #additional packages that may be useful
    [extras]
    name=CentOS-$releasever - Extras
    baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/extras/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
    gpgcheck=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
    
    #additional packages that extend functionality of existing packages
    [centosplus]
    name=CentOS-$releasever - Plus
    baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/centosplus/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
    gpgcheck=1
    enabled=0
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

3.更新cache

yum clean all
    yum makecache

4.测试

yum -y update

[http_mirrors.163.com_.help_centos.html]: http://mirrors.163.com/.help/centos.html
[https_mirrors.tuna.tsinghua.edu.cn_help_centos]: https://mirrors.tuna.tsinghua.edu.cn/help/centos/