Nagios Support Forum

It turns out upgrading and downgrading the VM has resolved this issue. I suppose something in the virtual ether still had it's hooks into the kernel.

I've read this and heavily increased those parameters to no avail. Restarting ndo2db will clear the message queue, which is expected. I can then see the message queue growing, and it eventually hits the limit which spawns the error. At that point, Nagios stops processing checks. What doesn't make se...

I should add that despite the errors in the log, I'm still unable to advance past the login screen, even after restarting ndo2db, the web server, or rebooting.

I'm running into a problem where I'm unable to log into Nagios XI. No timeout occurs, and according to the log, Nagios seemingly hums along fine until the following errors occur: Apr 14 18:41:10 HOST ndo2db: Error: max retries exceeded sending message to queue. Kernel queue parameters may need to be...