Nagios Support Forum

Posted: **Tue Aug 29, 2017 9:21 am**

Hi All,
I have "Nagios 4.0.2" running on "Ubuntu 14.04.5 LTS". Now the problem i am facing is that it freezes frequently and host status is not updating .So once i kill the "ndo2db processes" and Restart its working but only for few hours and again the same problem, and FYI earlier i used to have this issue but once i have restarted the process it could have worked properly, Now it very frequent and the only change i made in the database is that Setting the "Expire binlog days = 7" as bin logs are taking lot of volume. Will that effect ? So please could anyone help me on this issue.

-> No Errors when i check with "/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg" Command.

-> Below are the commands that i shoot when it freezes,correct me if i am doing anything wrong.

Thanks in Advance!!

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ps -aux | grep 'ndo2db.cfg'
kill -9 <process id>
rm /usr/local/nagios/var/ndo.sock
/usr/local/nagios/bin/ndo2db -c /usr/local/nagios/etc/ndo2db.cfg

Posted: **Tue Aug 29, 2017 11:09 am**

Can you share the following files?
/usr/local/nagios/etc/ndo2db.cfg
/usr/local/nagios/etc/nagios.cfg

Posted: **Wed Aug 30, 2017 2:57 am**

Hi scottwilkerson,
Here are the Attachments. Thank You!

Posted: **Wed Aug 30, 2017 8:53 am**

in your ndo2db.cfg you have the following

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debug_level=2

This will cause an ton of logging to be done, which on a busy system can really slow down as the disk takes a hit.

Change to

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debug_level=0

and then restart ndo2db

Let us know if you have further problems.

Posted: **Wed Aug 30, 2017 9:21 am**

Thanks much scottwilkerson. I have just changed the "debug_level=0" & Restarted the service. After Verifying for couple of hours will confirm the Status and could you please tell me is their any other process for restarting the service rather following the below steps?

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ps -aux | grep 'ndo2db.cfg'
kill -9 <process id>
rm /usr/local/nagios/var/ndo.sock
/usr/local/nagios/bin/ndo2db -c /usr/local/nagios/etc/ndo2db.cfg

As when i do "service ndo2db restart" it says unrecognised service.

Posted: **Wed Aug 30, 2017 9:30 am**

This sounds like you didn't do part of the make process

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make install-init

would add the init script so the service would be recognized.

Posted: **Wed Aug 30, 2017 10:30 am**

Hi scottwilkerson,
When i Just Hit tail command on todays Log it shows the below Output,will that effect the system??

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[1504075803] Caught SIGTERM, shutting down...
[1504075803] ndomod: Error writing to data sink!  Some output may get lost...
[1504075803] ndomod: Please check remote ndo2db log, database connection or SSL Parameters

Posted: **Wed Aug 30, 2017 10:37 am**

This is likely from you killing the ndo2db process and then ndomod cannot write to the data sink (ndo2db) which happened the same second.

Posted: **Wed Aug 30, 2017 10:42 am**

So how can i resolve this friend? Do i need to restart the process again or should i wait?

Thank you!

Posted: **Wed Aug 30, 2017 10:58 am**

Teja wrote:So how can i resolve this friend? Do i need to restart the process again or should i wait?

Thank you!

If you do not continue to get more of these logs there isn't anything to resolve, it would be normal to get this error when you kill the ndo2db process

Nagios Support Forum

Nagios Freezes and Host Status not getting Updated

Nagios Freezes and Host Status not getting Updated

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Re: Nagios Freezes and Host Status not getting Updated

Re: Nagios Freezes and Host Status not getting Updated

Re: Nagios Freezes and Host Status not getting Updated

Re: Nagios Freezes and Host Status not getting Updated

Re: Nagios Freezes and Host Status not getting Updated

Re: Nagios Freezes and Host Status not getting Updated

Re: Nagios Freezes and Host Status not getting Updated

Re: Nagios Freezes and Host Status not getting Updated