Regarding SSH key authentication
by ncnaveen_arasu from LinuxQuestions.org on (#4XCB8)
Hi Team
We have configured ssh key authentication to login to remote server for one of the user which we are being used to monitor our servers.
authentication works and we are able to monitor most of the hosts.
But for few servers, authentication is getting failed and when we logged on with particular user account getting an error as below.
root@yyyy ~]# su - monitor
Last login: Fri Jan 3 14:06:02 CET 2020 on pts/0
Last failed login: Fri Jan 3 14:16:35 CET 2020 from
serverxxxx.se on ssh:notty
There were 21 failed login attempts since the last successful login.
Please assist what logs should be checked and what could be reason for such error.


We have configured ssh key authentication to login to remote server for one of the user which we are being used to monitor our servers.
authentication works and we are able to monitor most of the hosts.
But for few servers, authentication is getting failed and when we logged on with particular user account getting an error as below.
root@yyyy ~]# su - monitor
Last login: Fri Jan 3 14:06:02 CET 2020 on pts/0
Last failed login: Fri Jan 3 14:16:35 CET 2020 from
serverxxxx.se on ssh:notty
There were 21 failed login attempts since the last successful login.
Please assist what logs should be checked and what could be reason for such error.