Monitoring Engine randomly stops in Nagios XI 5.2.3

[TBT]

After a recent upgrade to XI 5.2.3 we're starting to notice the Monitoring Engine stops across several XI hosts at random times. Seems to be after a few hours though. This is occurring on XI hosts with both moderate and low load.

Nothing really stands out in /var/log/messages

Please advise.

[hsmith]

This is the first report of this that I have seen. Does it not come back up until you start it? What logs have you checked?

[TBT]

This is the first report of this that I have seen. Does it not come back up until you start it? What logs have you checked?

No it does not, requires manual start. I've checked /var/log/messages only.

[hsmith]

Can you take a look at /usr/local/nagios/var/nagios.log and see if there is anything telling?

[TBT]

Another oddity worth mentioning is that the system check located top right in the header menu indicates "Monitoring Engine stopped" with a red icon, but the Admin > System Status > XI System Component Status is indicates running with a green icon.

sysnag.PNG

UPDATE: NOT ALWAYS THE CASE. Engine stopped again and the icon was red in both interfaces.

[TBT]

Can you take a look at /usr/local/nagios/var/nagios.log and see if there is anything telling?

A few obscure "[1449858778] External command error: Command failed", but nothing else that stands out.

[rkennedy]

Can you post the result of tail -n200 /usr/local/nagios/var/nagios.log for us to actually take a look at?

[TBT]

Can you post the result of tail -n200 /usr/local/nagios/var/nagios.log for us to actually take a look at?

Emailed as an attachment to xisupport

[TBT]

Engine stopped again. Seems to happen roughly every 6 hours.

[WillemDH]

Yo say this is happening on multiple XI hosts? All the same symptoms?