Linux

CentOS7结束支持：yum出错Could not resolve host: mirrorlist.centos.org; Name or service not known

CentOS7在2024/6/30 EOL结束官方支持，镜像地址无法访问，导致执行yum命令时会发生错误。

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$ sudo yum install telnet
Loaded plugins: fastestmirror
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=genclo error was
14: curl#6 - "Could not resolve host: mirrorlist.centos.org; Name or service not known"

CentOS软件仓库现在移到了 Vault Mirror里面，通过修改/etc/yum.repos.d/CentOS-Base.repo的设定可以解决这个错误。

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$ sed -i 's|mirrorlist=http://mirrorlist.centos.org|#mirrorlist=http://mirrorlist.centos.org|' /etc/yum.repos.d/CentOS-Base.repo
$ sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|' /etc/yum.repos.d/CentOS-Base.repo


$ cat /etc/yum.repos.d/CentOS-Base.repo
# 修改后内容如下

[base]
name=CentOS-$releasever - Base
baseurl=http://vault.centos.org/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
 
#released updates
[updates]
name=CentOS-$releasever - Updates
baseurl=http://vault.centos.org/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
 
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
baseurl=http://vault.centos.org/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
 
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
baseurl=http://vault.centos.org/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

# 清理缓存即可使用yum命令安装软件
$ yum clean all
$ yum update