[Solved] Yum Upgrade Error: yum makecache: error: argument timer: invalid choice: ‘fast’ (choose from ‘timer’)

1.Problem: When executing the command: yum makecache fast, an error is reported: yum makecache: error: argument timer: invalid choice: ‘fast’ (choose from ‘timer’) as follows

2. the cause and solution: CentOS 8 does not have fast this command, remove it!

 

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