Nagios Core 4.5.9 - Fresh install on Ubuntu 24.04 service takes approximately 17 minutes to start

[saitohas]

"I followed the step-by-step installation several times and I can't figure out why the service takes so long to start. There are no errors in the Nagios, Apache, or Ubuntu logs. I've tried everything and there's no way to get Nagios to start normally."

[ericloyd]

Just curious if you have localhost in your /etc/hosts file? Or some DNS failure? Sounds like it's waiting for a name translation.

[saitohas]

Yes, this is not the problem

[ericloyd]

Does restarting it also take so long? Or only startup?

[saitohas]

Same delay

[ericloyd]

What happens when you execute the following as root:

time /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

[saitohas]

[ericloyd]

Okay, so I don't think it's Nagios itself that has the problem, it's something system related that it's expecting to do and that's hanging until a timeout finishes and then it continues. I'll see if I can get one of our techs to do this install on a box today and see what it does.

I assume you did a normal 24.04 LTS minimal server install?

[saitohas]

Yes, normal 24.04 LTS install

[saitohas]

This issue is not specific to this version, it has been occurring since the versions released at the beginning of 2024

[tsadpbb]

I'm curious if you still have the problem with the check_for_updates value set to 0 in the main configuration file

[saitohas]

Set check_for_updates to 0

It work´s!

But now this alert appears on the main screen

[tsadpbb]

I have been seeing a lot of problems with the check_for_updates functionality, I will look into it

[tsadpbb]

What kind of environment do you have your nagios core system in? Is it offline? Can the nagios core system connect to api.nagios.com?

[saitohas]

It's not offline; it can connect to api.nagios.com, but we use a proxy server that might be affecting the update verification.