Configuring the Local Yum Source

Procedure

1. Use PuTTY to log in to the server as the root user.
2. Run the following command to create the /cdrom directory:

   mkdir /cdrom

3. Run the following command to mount the OS image package to the /cdrom directory:

   mount /path/to/ISO/CentOS-7-aarch64-Everything-1810.iso /cdrom

4. Run the following commands to remove all files in the /etc/yum.repos.d directory:

   cd /etc/yum.repos.d
   mkdir bak
   mv *.repo bak

5. Run the following command to create a Yum source configuration file:
   1. Create a Yum source configuration file.

      vi /etc/yum.repos.d/CentOS-base.repo

   2. Press i to enter the insert mode and add the following content:

      [CentOS7.6-source] 
      Name=CentOS 7.6 Repo 
      baseurl=file:///cdrom
      enabled=1
      gpgcheck=0

   3. Press Esc, type :wq!, and press Enter to save the file and exit.