centos7 恢复Yum使用

[CentOS 7.9 停止维护(2024-6-30)后可用在线yum源 —— 筑梦之路_centos停止维护-CSDN博客](https://blog.csdn.net/qq_34777982/article/details/140119407)

众所周知，centos 7 在2024年6月30日，[生命周期](https://so.csdn.net/so/search?q=%E7%94%9F%E5%91%BD%E5%91%A8%E6%9C%9F&spm=1001.2101.3001.7020)结束，官方不再进行支持维护，而很多环境一时之间无法完全更新替换操作系统，因此对于yum源还是需要的，特别是对于[互联网](https://edu.csdn.net/cloud/pm_summit?utm_source=blogglc&spm=1001.2101.3001.7020)环境来说，在线yum源使用方便很多，而不需要去搭建本地yum源和内网yum源。

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

cat > CentOS-aliyun-lhr.repo << 'EOF'
[base]
name=CentOS-$releasever - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
 http://mirrors.aliyuncs.com/centos/$releasever/os/$basearch/
 http://mirrors.cloud.aliyuncs.com/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
 
#released updates 
[updates]
name=CentOS-$releasever - Updates - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
 http://mirrors.aliyuncs.com/centos/$releasever/updates/$basearch/
 http://mirrors.cloud.aliyuncs.com/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
 
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
 http://mirrors.aliyuncs.com/centos/$releasever/extras/$basearch/
 http://mirrors.cloud.aliyuncs.com/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
 
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/centosplus/$basearch/
 http://mirrors.aliyuncs.com/centos/$releasever/centosplus/$basearch/
 http://mirrors.cloud.aliyuncs.com/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
 
#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/$releasever/contrib/$basearch/
 http://mirrors.aliyuncs.com/centos/$releasever/contrib/$basearch/
 http://mirrors.cloud.aliyuncs.com/centos/$releasever/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
EOF

```

```shell
cat > epel-aliyun.repo <<'EOF'
[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
baseurl=http://mirrors.aliyun.com/epel/7/$basearch
failovermethod=priority
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
 
[epel-debuginfo]
name=Extra Packages for Enterprise Linux 7 - $basearch - Debug
baseurl=http://mirrors.aliyun.com/epel/7/$basearch/debug
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=0
 
[epel-source]
name=Extra Packages for Enterprise Linux 7 - $basearch - Source
baseurl=http://mirrors.aliyun.com/epel/7/SRPMS
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=0
EOF
```

```shell
yum  clean all
 
yum makecache fast
 
 
yum install vim lrzsz wget curl net-tools 
```