To integrate Nagios with st2, we will need to add a nagios event handler which POSTs a HTTP webbhook to st2.
The event handler script is available in etc/st2service_handler.py.
The event handler tries to register a trigger type first before sending any notifications to st2. This trigger type is then referenced in st2 rules. See rules/ for examples.
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Pick the nagios host where you want the event handler to be placed.
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Copy st2service_handler.py to /usr/local/nagios/libexec/
cp st2service_handler.py /usr/local/nagios/libexec/ -
Make sure st2service_handler.py is executable.
chmod +x /usr/local/nagios/libexec/st2service_handler.py -
Handlers require a configuration file (See etc/st2service_handler.conf) containing st2 credentials, st2 API URL and st2 auth URL.