PyNagios is a simple Python library meant to make writing Nagios plugins much easier. Nagios plugins have quite a few guidelines to adhere to, and PyNagios provides helpers to make this easy.
To install, simply use pip or easy_install:
pip install pynagios
Documentation for the latest version can always be found at http://kiip.github.com/pynagios/latest.
The core features supported by PyNagios:
- Parsing command line arguments such that the standard expected
arguments (such as
-H,-w,-c) are accepted. - Returning proper POSIX exit code based on status.
- Parsing Nagios range formats (such as "@10:20", "~:50", "10", etc.)
- Outputting status and message.
- Outputting performance data.
What all these features result in is a concise, simple, and guidelines-compliant Python-based Nagios plugin:
from pynagios import Plugin
class UserCheck(Plugin):
"""
Nagios plugin to check how many users are logged into this
machine.
"""
def check(self):
# Get the number of logged in users, for now we hardcode
users = 27
# Build a response and exit. This `response_for_value` automatically
# creates a response with the proper status given the value and the
# warning/critical ranges passed in via the command line.
response = self.response_for_value(users, "%d users" % users)
response.set_perf_data("users", users)
response.set_perf_data("another metric", 27, "MB")
return response
if __name__ == 'main':
# Build the plugin instance and run it. This will also parse
# command line arguments by default.
UserCheck().check().exit()
While the above example subclasses Plugin, you're of course welcome
to simply call Plugin`s methods directly and build a ``Response`
yourself.