Salt minion system boot beacon

system_boot.py

# Save into salt://_beacons/system_boot.py and then run
# saltutil.sync_beacons
from __future__ import absolute_import, unicode_literals

__virtualname__ = 'system_boot'


def beacon(config):
    """
    beacons:
      system_boot:
        - interval: 5
        - threshold: 180
    """
    _config = {}
    list(map(_config.update, config))

    ret = []

    threshold = _config.get('threshold', 180)

    if __virtualname__ not in __context__:
        __context__[__virtualname__] = True
        uptime = __salt__['status.uptime']()

        if not isinstance(uptime, (int, float)):
            uptime = uptime['seconds']
        uptime = int(uptime)

        if uptime < threshold:
            ret.append({'uptime': uptime})
    return ret