Dear Johnny, Yes, I have tried much larger numbers than 60 and 3 for the above two parameters respectively. And I am sure it is using ?protocol 2? because it?s uncommented in sshd_config. Is there a way to catch what?s happing before quit? I couldn?t see anything except for the line ?write failed, broken pipe?. Thanks. Hua At 2015-10-08 19:37:24, "Johnny Hughes" <johnny at centos.org> wrote:>On 10/07/2015 10:45 PM, 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. >>> >> Yes, I tried ssh -vvv. It gave a lot of information while login, but it quit without any further information except for ?write failed, broken pipe?. >> >>>> 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. >>> >> >> Sorry I made a mistake for the version. I am using v7 instead of v7.7. >> > >Try using ClientAliveMaxCount and ServerAliveCountMax (you can set them >to 5 or 8 instead of the default of 3 and also make the timeouts higher >than 60. > >make sure you are using 'protocol 2'. >
On Thu, Oct 08, 2015 at 09:32:41PM +0800, Hua Wang wrote:> Is there a way to catch what?s happing before quit? I couldn?t see > anything except for the line ?write failed, broken pipe?.At this point, I'd suggest looking at the logs on the remote end and look to see what's being logged when the session closes. -- Jonathan Billings <billings at negate.org>
Which logfile shall I have a look? Thanks, Hua At 2015-10-08 21:55:50, "Jonathan Billings" <billings at negate.org> wrote:>On Thu, Oct 08, 2015 at 09:32:41PM +0800, Hua Wang wrote: >> Is there a way to catch what?s happing before quit? I couldn?t see >> anything except for the line ?write failed, broken pipe?. > >At this point, I'd suggest looking at the logs on the remote end and >look to see what's being logged when the session closes. > >-- >Jonathan Billings <billings at negate.org> >_______________________________________________ >CentOS mailing list >CentOS at centos.org >https://lists.centos.org/mailman/listinfo/centos
Am 08.10.2015 um 15:32 schrieb Hua Wang <ehwang at 163.com>:> Yes, I have tried much larger numbers than 60 and 3 for the > above two parameters respectively. And I am sure it is using > ?protocol 2? because it?s uncommented in sshd_config. > > Is there a way to catch what?s happing before quit? I couldn?t > see anything except for the line ?write failed, broken pipe?.as the system was physically "touch" (reinstalled 6->7), i suggest to check the hw again e.g. check cable, check switch port (change the port), power supply of the switch etc. -- LF