Nagios stopped working : process running, no errors, but nothing in the web server

[Marc Powell]

On Mar 17, 2009, at 6:49 AM, Toussaint OTTAVI wrote:

> Hi,
>
> I've been running Nagios for months, without any problem. Today, I  
> tried to restart it, as I do each time I do a change in the config  
> files. But it does not want to work anymore !
>
> - Web server always displays "Error: Could not read host and service  
> status information", the same as when Nagios process is not running
> - The Nagios process is running, "ps -A | grep nagios" shows a  
> process (and only one)
> - It answers correctly to start and stop commands (/etc/rc.d/nagios  
> start|stop|status|restart on OpenSuse)
> - Restarting the server did not change anything
> - Of course, there are no errors in my config. Checking config is  
> successful, there's nothing special in /var/log/nagios/config.err

> Any idea ? Are there any other log or debug files where I could have  
> a look to see what's going wrong ?

instinct tells me it's NDO updating the database. Do you see the mysql  
process busy during this time? If your nagios database is large it may  
take a few minutes for nagios to get going. Either wait and see or  
disable NDO and see if that help.

--
Marc


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