[CentOS] problem on exceptional quit

[Frank Cox]

On Thu, 8 Oct 2015 11:18:17 +0800
Hua Wang wrote:

> I tried to ping the server, and it can accept all data. Is there a good way
> to check it? 

ssh -v, ssh -vv and ssh -vvv might give you some interesting information.

> The problem came out while reinstalling centos 7.7.

Since you're apparently using some kind of an unofficial or non-standard version of Centos, you might want to try using a current (regular) one instead.

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