There are probably attacks going on on this system. When I log in I read:

paulbq

Last failed login: Tue Mar 18 06:49:29 UTC 2025 from 175.126.123.231 on ssh:notty
There were 19 failed login attempts since the last successful login.
Last login: Sat Mar 15 10:30:41 2025 from 178.116.199.74
The last successfull login is from myself, the others are from server in Croatia? The IP address is known as 100% fraudulous. Just let you all know that there are attacks on SSH.

peter

paulbq This is a result of random login attempts by bots trying to break into the server. It is a very common occurrence across our entire fleet of servers and indeed on every server exposed to the internet. There's really not much cause for concern as we block the attacking IP addresses related to the failed logins automatically.

anjanesh

This is normal and I think its mitigated from OpalStack side.
I got - There were 41 failed login attempts since the last successful login.