Add all hosts to hostgroup

add-to-hostgroup.py

import pynag.Model

for host in pynag.Model.Host.objects.all:
    # Object has host_name
    if host.host_name:
        if 'my-hostgroup' not in host.hostgroups:
                host.add_to_hostgroup('my-hostgroup')
                host.save()

import pynag.Model

for host in pynag.Model.Host.objects.filter(host_name__exists=True, register="1"):
    host.add_host_hostgroup('my-hostgroup')
    host.save()