Assaf - thanks for your time and patience outlining those steps:
That is what the list is about .
I was able to at least get the connectivity between Nagios server and
the monitored host to show a valid connection:
/usr/local/nagios/libexec/check_nrpe -H 10.0.100.139 -c check_users
USERS OK - 1 users currently logged in |users=1;5;10;0
there were a few things wrong on the monitoring server, or at least
what I changed:
* changed ownership of nrpe.cfg to nagios.nagios
* modified xinetd.d/nrpe to show Nagios server IP as allowed connection
I struggled with a few other things, and connection attempts, before I
realized I hadn't restarted the nrpe service after modifying the
xinetd.d/nrpe file.
I did notice that the plugin location from another server is different
than the one that is missing:
/*/usr/lib64/nagios/plugins*/ vs //*usr/local/nagios/libexec/*/
(guess this has something to do with the way it was compiled)
NRPE by default is placing the path as the lib64 in the nrpe.cfg sample
file , while all other packages use the local path - this is something
that you get used to "ignore-modify " with time .
Guess I have to wait now a few mins before the host shows in the
panel? as its not showing now even after 10 mins. Restarting xinetd
shows this in /var/log/messages:
*xinetd[22518]: bind failed (Address already in use (errno = 98)).
service = nrpe (*is this a bug or anything in xinetd? I saw that
referenced on a few other forums)
nrpe service is running and listening though on 5666
I have always run nrpe as a stand alone daemon , never with xinetd , to
have better control on what is running and how it is run .
From what i remember about xinetd , it has an internal "keep-alive"
mechanism that waits till all connections are terminated before it
releases a port (again , i may be wrong ) you need to stop it and wait
till the port is no longer shown as active , and then restart it .
Or move to a standalone daemon - that will allow you to control the nrpe
separately from any other service and better debug the issue.
--
Never,Ever Cut A Deal With a Dragon
Next year I will be doing the London to Paris bike ride to
raise money for the DogTrust (www.dogstrust.co.uk) .
Please Sponsor me at http://www.justgiving.com/Assaf-Flatto
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