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Half my AIX check are "NRPE: Unable to read output"
Posted: Fri Jan 11, 2013 10:42 am
by BanditBBS
As the title says, half my check on AIX are responding with "NRPE: Unable to read output"
All checks are using NRPE, so it *shouldn't* be NRPE. I have run the checks manually and they run fine and give me a result. When testing manually, we have run them as the nagios user, so again, it *shoudln't* be a permissions issue. It is as soon as NRPE is thrown into the mix that I get the error.
Example:
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hermes /nagios/libexec # ./test.pl -f -w 50 -c 30 -C
WARNING - 38.6% (1618888 kB) free!|TOTAL=4194304KB;;;; USED=2575416KB;;;; FREE=1618888KB;;;; CACHES=1528412KB;;;;
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hermes /nagios/libexec # ./check_nrpe -n -H 10.97.235.15 -c check_test -a '-f -C -w 20 -c 10'
NRPE: Unable to read output
Yes I modified the nrpe.cfg file and added the check_test command, or I would have received command not defined instead.
Re: Half my AIX check are "NRPE: Unable to read output"
Posted: Fri Jan 11, 2013 11:04 am
by slansing
Try running a bounce back check between the Remote host and the Nagios system, this will let us know if they can talk or not:
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/usr/local/nagios/libexec/check_nrpe -H "place.your.host.IP.here'
Re: Half my AIX check are "NRPE: Unable to read output"
Posted: Fri Jan 11, 2013 11:07 am
by BanditBBS
slansing wrote:Try running a bounce back check between the Remote host and the Nagios system, this will let us know if they can talk or not:
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/usr/local/nagios/libexec/check_nrpe -H "place.your.host.IP.here'
Yes, they can talk, as stated only have the checks are coming back with the error. The other half(also using NRPE) work fine. Also, I'm trying this all locally from the server itself before I even bring XI into the picture. Until I get same output from the check_nrpe as I do from check_test it is workless to bring the XI server or XI itself into the picture.
Re: Half my AIX check are "NRPE: Unable to read output"
Posted: Fri Jan 11, 2013 11:12 am
by slansing
Are you able to get valid plugin information when not using the "no ssl flag (-n)" Try running a test without it and lets see what happens.
Re: Half my AIX check are "NRPE: Unable to read output"
Posted: Fri Jan 11, 2013 11:41 am
by BanditBBS
Just to show some examples:
Working Test
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hermes /nagios/libexec # ./check_nrpe -H localhost -c check_load -a '-w 15,10,5 -c 30,20,10'
OK - load average: 1.42, 1.70, 1.71|load1=1.420;15.000;30.000;0; load5=1.700;10.000;20.000;0; load15=1.710;5.000;10.000;0;
None working test
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hermes /nagios/libexec # ./check_nrpe -H localhost -c check_test -a '-f -C -w 20 -c 10'
NRPE: Unable to read output
Above test without using nrpe
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hermes /nagios/libexec # ./test -f -C -w 20 -c 10
OK - 38.6% (1617188 kB) free.|TOTAL=4194304KB;;;; USED=2577116KB;;;; FREE=1617188KB;;;; CACHES=1530364KB;;;;
nrpe.cfg config
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command[check_test]=/usr/local/nagios/libexec/test $ARG1$
command[check_load]=/usr/local/nagios/libexec/check_load $ARG1$
Re: Half my AIX check are "NRPE: Unable to read output"
Posted: Fri Jan 11, 2013 12:16 pm
by BanditBBS
ignore my issue for the moment. I think I have it resolved. I will add the resolution when I am sure.
Re: Half my AIX check are "NRPE: Unable to read output"
Posted: Mon Jan 14, 2013 8:52 am
by BanditBBS
It was the configured folder for the checks in the nrpe.cfg. Why only half the checks didn't work right, I have no idea. So if you are having issues, make sure your folders are configured properly.
I am still having issue with one of my checks though, the total processes one, I think I need to elevate the nagios user permissions when it runs that check. I won't know until later(AIX admin is busy today). I'll be testing these checks on 5.x, 6.x and 7.x. If they all work fine, I will upload them to the Exchange. They are all based off of currently available checks, just modified to work with a very basic install of AIX.
I marked this thread with a check as the original issue has been resolved.
Re: Half my AIX check are "NRPE: Unable to read output"
Posted: Mon Jan 14, 2013 10:19 am
by slansing
Were you using a non standard plugin directory for some checks? Or were the permissions faulty? This is an odd case, if you get a chance let us know what comes up when you get to poke around later.