[Nagiosplug-devel] Plugin Wrapper written in python
Joram Agten
joram.agten at gmail.com
Mon Nov 12 09:15:19 CET 2012
the last lines of your python program should contain something like
status_code, message = checkNodes()
# print message to stdout
print(message)
# end process with correct exit status
sys.exit(status_code)
On Fri, Nov 9, 2012 at 3:44 PM, Jamin Becker <jaminbecker at gmail.com> wrote:
> The other day I wrote a sort of wrapper that uses Nagios' check_icmp
> plugin to monitor several nodes on our network. If any one of the nodes
> down it returns a value of 1 (WARNING), if two or more nodes go down it
> returns a value of 2 (CRITICAL).
>
> Unfortunately, even if it is critical it still shows up as Ok...even
> though I know it is returning a value of 2. The plugin is written in
> python.
>
> #!/usr/bin/env python
> import os
> import subprocess
> home="/usr/lib/nagios/plugins"
>
> def checkNodes():
> up = 0
> aProblemsDetected=0
> bProblemsDetected=0
> cProblemsDetected=0
> status=0
> message=" - "
> TEST_OK=0
> TEST_WARNING=1
> TEST_CRITICAL=2
> TEST_UKNOWN=3
> try:
>
> cloud_alpha_status=subprocess.check_output(home+"/check_icmp -H cloud-alpha
> ",shell=True)
> if "OK" in cloud_alpha_status:
> ++up
>
> else:
> message=message+ "Cloud Bravo does not seem to be
> reachable. "
> aProblemsDetected=1
>
> except:
> message=message+"Node (Cloud-Alpha) is either down or
> unreachable. "
> aProblemsDetected=1
> try:
>
> cloud_bravo_status=subprocess.check_output(home+"/check_icmp -H
> cloud-bravo",shell=True)
> if "OK" in cloud_bravo_status:
> ++up
> else:
> print cloud_bravo_status
> message=message+"Cloud Bravo does not seem to be
> reachable. "
> bProblemsDetected=1
> except:
> message=message+"Node (Cloud-Bravo) is either down or
> unreachable. "
> bProblemsDetected=1
> try:
>
> cloud_charlie_status=subprocess.check_output(home+"/check_icmp -H
> cloud-charlie",shell=True)
> if "OK" in cloud_charlie_status:
> ++up
> else:
> print cloud_charlie_status
> message=message+"Cloud Charlie does not seem to be
> reachable. "
> cProblemsDetected=1
> except:
> print "Node (Cloud-Charlie) is either down or unreachable.
> "
> cProblemsDetected=1
>
> if aProblemsDetected+bProblemsDetected+cProblemsDetected==0:
> status=TEST_OK
> message=message+"CLUSTER IS UP! -- Cloud-Alpha up --
> Cloud-Bravo up -- Cloud-Charlie up"
> code='OK'
> if aProblemsDetected+bProblemsDetected+cProblemsDetected==1:
> status=TEST_WARNING
> code='WARNING'
> message="Errors Detected:"+message
> elif aProblemsDetected+bProblemsDetected+cProblemsDetected>1:
> status=TEST_CRITICAL
> message="Many Errors Detected"+message
> code='CRITICAL'
> return status,(code+' '+message)
>
> print checkNodes()
>
>
>
>
>
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