【Linux operation 54】Centos Stream 9 更换清华源

1、对应的清华源地址：

https://mirrors.tuna.tsinghua.edu.cn/centos-stream/9-stream/

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2、更换源

2.1、配置文件 路径：

/etc/yum.repos.d/centos.repo

2.2、首先备份 centos.repo

cp centos.repo backup_centos.repo

2.3、修改 centos.re po文件，修改后的文件 如下

[root@localhost yum.repos.d]# cat centos.repo 
[baseos]
name=CentOS Stream $releasever - BaseOS
#mirrorlist=http://mirrorlist.centos.org/?release=$stream&amp;arch=$basearch&amp;repo=BaseOS&amp;infra=$infra
baseurl=https://mirrors.ustc.edu.cn/centos-stream/9-stream/BaseOS/$basearch/os/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
[appstream]
name=CentOS Stream $releasever - AppStream
#mirrorlist=http://mirrorlist.centos.org/?release=$stream&amp;arch=$basearch&amp;repo=AppStream&infra=$infra
baseurl=https://mirrors.ustc.edu.cn/centos-stream/9-stream/AppStream/$basearch/os/
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial

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2.4、生成 缓存

[root@localhost yum.repos.d]# yum clean all
[root@localhost yum.repos.d]# yum makecache

[root@localhost yum.repos.d]# yum clean all
Repository baseos is listed more than once in the configuration
Repository appstream is listed more than once in the configuration
0 files removed
[root@localhost yum.repos.d]# yum makecache
Repository baseos is listed more than once in the configuration
Repository appstream is listed more than once in the configuration
CentOS Stream 9 - BaseOS                                                                                                                                                                      659 kB/s | 6.0 MB     00:09    
CentOS Stream 9 - AppStream                                                                                                                                                                   739 kB/s |  16 MB     00:21    
CentOS Stream 9 - Extras packages                                                                                                                                                             1.2 kB/s | 9.2 kB     00:07    
Metadata cache created.