PyXymon

PyXymon is a simple Python module that can help you write Xymon external scripts in Python. PyXymon provides some methods for rendering the messages you want to display in the Xymon web page and for sending them to the Xymon server. PyXymon reads the required informations from the Xymon environment variables, so you do not need to add any extra configuration file.

Installation

Just copy the file pyxymon.py in the xymon ext directory.

Usage

Create a script yourcheck.py using the following schema:

#!/usr/bin/python

import os
import sys
import pyxymon as pymon

CHECK_NAME = 'yourcheck'
CHECK_VERSION = 1

def run_check():
    """Check the status of whatever you want..."""
    xymon = pymon.XymonClient(CHECK_NAME)
    check_script = os.path.basename(__file__)
    # do your logic...
    # you can set the criticity of the final xymon message by using:
    #    xymon.color = pymon.STATUS_WARNING
    # or
    #    xymon.color = pymon.STATUS_CRITICAL
    # The default criticity is set to 'pymon.STATUS_OK' 
    # Optionally you can set the LIFETIME (in minutes) using:
    #    xymon.lifetime = 15
    xymon.title('Title in the xymon check page')
    xymon.section('Section Title',
                  'Text containing the lines you want to display')
    # You can add here other sections, if required.
    xymon.footer(check_script, CHECK_VERSION)
    xymon.send()

def main():
    run_check()

if __name__ == '__main__':
    main()
    sys.exit(0)

Configure your extension module in the file $XYMONCLIENTHOME/etc/xymonclient.cfg.

[yourcheck]
        ENVFILE $XYMONCLIENTHOME/etc/xymonclient.cfg
        CMD $XYMONCLIENTHOME/ext/yourcheck.py
        LOGFILE $XYMONCLIENTLOGS/yourcheck.log
        INTERVAL 10m

You can find a full example here.

Note

If you need to run your Python check with root privileges, just prefix the CMD directive in xymonclient.cfg with the sudo command:

    CMD sudo $XYMONCLIENTHOME/ext/yourcheck.py

By default sudo does not preserve the environment variables exported by Xymon. To preserve the variables required by PyXymon, add the following lines to the sudo configuration:

 Defaults env_keep:xymon += "XYMSRV"
 Defaults env_keep:xymon += "XYMONDPORT"
 Defaults env_keep:xymon += "MACHINE"