Restart Home Assistant if Wemo Switch is not detected

Restart Home Assistant

This configuration example is restarting Home Assistant if a WeMo switch is not detected. An additional MQTT switch is present for stopping Home Assistant and can be triggered by IFTTT. The running batch script will automatically restart Home Assistant if the process isn’t found anymore.

mqtt:
  broker: 127.0.0.1
  port: 1883
  client_id: home-assistant-1
  keepalive: 60
  
device_tracker:
  - platform: nmap_tracker
    hosts: 192.168.0.1-255
    home_interval: 1
    interval_seconds: 30
    consider_home: 900
    
ifttt:
  key: ***
  
notify: 
  - platform: pushbullet
    api_key: ***
    name: pushbullet
  
switch:
  - platform: wemo
  - platform: mqtt
    state_topic: "home/killhass"
    command_topic: "home/killhass"
    name: "KillHass"
    qos: 0
    payload_on: "ON"
    payload_of: "OFF"
    optimistic: false

script:
  restarthawemo:
    alias: "Restart HA if WeMo isn't found after 15 minutes"
    sequence:
      - delay:
          minutes: 15
      - service: notify.pushbullet
        data:
          message: 'WeMo not found, restarting HA'
      - service: switch.turn_on
        data:
          entity_id: switch.killhass
  
automation:
- alias: "Restart HA if WeMo switch isn't found after 15 minutes"
  trigger:
    platform: state
    entity_id: device_tracker.wemo
    from: 'not_home'
    to: 'home'
  condition:
    - condition: template
      value_template: '{% if states.switch.wemo %}false{% else %}true{% endif %}'
    - condition: state
      entity_id: script.restarthawemo
      state: 'off'
  action:
    service: homeassistant.turn_on
    entity_id: script.restarthawemo
- alias: 'Stop HA'
  trigger:
    - platform: state
      entity_id: switch.KillHass
      to: 'on'
  action:
    service: homeassistant.stop
  - alias: 'Stop restarting HA is WeMo is found'
  trigger:
    platform: template
    value_template: '{% if states.switch.wemo %}true{% else %}false{% endif %}'
  condition:
    condition: state
    entity_id: script.restarthawemo
    state: 'on'
  action:
    service: homeassistant.turn_off
    entity_id: script.restarthawemo