nagios does its checks, but doesn't notify

[Marco Herrn]

Hi there,

I have nagios (1.3) running on server to monitor two other servers. On
one of these 2 server is the nagios nrpe-server running to allow some
additional checks.

These checks seem to be executed correctly, as the nrpe-server is
regularly logging those:

----/----
Feb  8 16:47:32 dsxx-xxx-xxx-xx nrpe[15233]: Connection from xxx.xxx.xxx.xxx port 53758 
Feb  8 16:47:32 dsxx-xxx-xxx-xx nrpe[15233]: Host address checks out ok 
Feb  8 16:47:32 dsxx-xxx-xxx-xx nrpe[15233]: Handling the connection... 
Feb  8 16:47:32 dsxx-xxx-xxx-xx nrpe[15233]: Host is asking for command çheck_mysql' to be run... 
Feb  8 16:47:32 dsxx-xxx-xxx-xx nrpe[15233]: Running command: /usr/lib/nagios/plugins/check_mysql --check-slave 
Feb  8 16:47:32 dsxx-xxx-xxx-xx nrpe[15233]: Command completed with return code 2 and output: Access denied for user: 'nagios at localhost' (Using password: NO) 
Feb  8 16:47:32 dsxx-xxx-xxx-xx nrpe[15233]: Return Code: 2, Output: Access denied for user: 'nagios at localhost' (Using password: NO) 
Feb  8 16:47:32 dsxx-xxx-xxx-xx nrpe[15233]: Connection from xxx.xxx.xxx.xxx closed.
----/----

But on the actual nagios host, nearly nothing gets logged:

----/----
[1139409698] Nagios 1.3 starting... (PID=31188)
----/----

And no notifications are sent. Even if a service is not available. 
There were times where the nagios host logged the following:

----/----
[1139402923] SERVICE ALERT: myhost;total_procs;CRITICAL;SOFT;2;PROCS CRITICAL: 209 processes 
[1139402983] SERVICE ALERT: myhost;total_procs;CRITICAL;SOFT;3;PROCS CRITICAL: 204 processes 
[1139403043] SERVICE ALERT: myhost;total_procs;CRITICAL;HARD;4;PROCS CRITICAL: 206 processes 
[1139403253] SERVICE ALERT: myhost;http;CRITICAL;SOFT;1;CRITICAL - Socket timeout after 10 seconds 
[1139403313] SERVICE ALERT: myhost;http;CRITICAL;SOFT;2;CRITICAL - Socket timeout after 10 seconds 
[1139403343] SERVICE ALERT: myhost;total_procs;WARNING;HARD;4;PROCS WARNING: 185 processes 
[1139403373] SERVICE ALERT: myhost;http;CRITICAL;SOFT;3;CRITICAL - Socket timeout after 10 seconds 
[1139403433] SERVICE ALERT: myhost;http;CRITICAL;HARD;4;CRITICAL - Socket timeout after 10 seconds
----/----

These logs didn't appear regularly! I see no pattern when these got
logged. Also in these cases no notifications were sent.

Now, how can I find out what is going wrong here? Is there a debug
option for nagios to get more verbose logging?
Or any other ideas?

Regards
Marco


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