nagios with ndo crashed after a week

[Frederik Vanhee]

Heiko wrote:
> Hello,
>
> i enabled ndomod last week to have some data do play with.
> Today nagios sudenly stopped checking and also a nagios restart and kill didnt
> bring it up again.
>
> I had this incident some months ago when first played with ndo.
>
> What is causing this behaevior and how can I prevent this?
> It is really critical when nagios doesnt check, we have a fallback
> nagios, but causes some confusion with my colleages.
>
> greetings
>
>
> Rupertt
>
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Rupertt,

I don't know how big your installation is, but if you have thousands of 
services or a distributed setup with passive checks and just enable ndo 
with the defaults, your ndo-database becomes very, very big.
This can cause a slowdown of your db-server. And Nagios slows down too, 
because of the latency in sending the results to the DB.

-Check the database size of the ndo-db
-Check your Nagios service check latency, high service check latency 
COULD be caused by slowly responding DB
-Check nagios.log and mysql.log to see if there are any errors
-Don't always think Nagios doesn't come up again. If your ndo is not 
performing as it should, it takes a long time for Nagios to startup and 
recreate a status.dat-file which is used by the cgi's. I've had a case 
were it took up to 5 minutes before the status.dat was created after a 
Nagios startup, because of the ndo
-Make sure you have the latest ndo-version

Good luck,

Frederik

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