Be sure to connect your redhat to the network before starting
1.su enter the password to enter the administrator
2. View your own yum source
rpm -qa | grep yum
3. Delete the official yum source that comes with the system all at once
rpm -qa|grep yum|xargs rpm -e --nodeps
4. Create a folder
mkdir YHW （YHW是我的文件名）5.ls to check, cd YHW to enter the folder
6. Download the domestic Yum source
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-168.el7.centos.noarch.rpm
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-54.el7_8.noarch.rpm
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-54.el7_8.noarch.rpm
wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-urlgrabber-3.10-10.el7.noarch.rpm
7. Install Yum source
rpm -ivh yum-3.4.3-168.el7.centos.noarch.rpm --force --nodeps
rpm -ivh python-iniparse-0.4-9.el7.noarch.rpm --force --nodeps
rpm -ivh yum-metadata-parser-1.1.4-10.el7.x86_64.rpm --force --nodeps
rpm -ivh yum-plugin-fastestmirror-1.1.31-54.el7_8.noarch.rpm --force --nodeps
rpm -ivh yum-utils-1.1.31-54.el7_8.noarch.rpm --force --nodeps
rpm -ivh python-urlgrabber-3.10-10.el7.noarch.rpm --force --nodeps
8. Check if the Yum source is installed
rpm -qa | grep yum
9. After installation, enter the following:
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
10. The file CentOs-Base.repo will appear under the /etc/yum.repos.d directory. Double-click to enter and click Search and Replace Versions
Input: $releasever Click to find
These are to be replaced in the replacement to enter 7, and then replace all
It cannot be saved directly after replacement, so enter in the terminal
gedit /etc/yum.repos.d/CentOs-Base.repo
will jump out
Copy all the content of Yum that you just replaced into the text that jumped out above, and then you can save it. At this time, two files will appear under the yum.repos.d folder
Since the permission of the file is read-only, it cannot be deleted directly
So you need to delete the file in the terminal
cd /etc # enter the folder
cd yum.repos.d
rm -f CentOS-Base.repo #delete file
At this point there was only one left. Open to view is modified successfully
10. Test
yum makecache
yum update
Although the prompt will still pop up, the update operation will be performed immediately afterwards, which means that we have successfully bypassed the official mirror to download things!