check_omd

• Plugin now uses Python 3
• added auto-healing feature (thanks a lot to lgmu)
• added testing box and unit tests
• moved from optparse to argparse
• fixed linting and cleaned-up code

Release 1.1.1:

• added Icinga2 command configuration and service configuration hints
• cleaned-up old rubbish code (increased pylint code, utilizing logging module,...)

Release 1.1.0

• added -w / --warning for excluding fragile services like npcd from generating critical states
• added hint when executing plugin as root