The CentOS 6 Reached it's life finally, but the system our running server can not upgrade immediately. So, what can I do?

I Searched all around the net, and finally, I got the right answer.

  1. How to fix yum after CentOS 6 went EOL
  2. 解决CentOS 6 EOL后源404的问题

After my thinking, the reason that I did not find the answer is I don't know how to descrip the question.

U can take it to solve your problem now.