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Fabian Peter Hammerle c7796a8701 release v0.3.0 1 month ago
.github aee870c751 prepare glib loop to receive dbus signals 1 month ago
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systemctl_mqtt 43835e1fc9 fixed fatal error on mqtt reconnect: tried to re-acquire shutdown inhibitor lock 1 month ago
tests f1371e1fec refactor: move some constants & methods to new systemctl_mqtt/_dbus.py 1 month ago
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.isort.cfg 04fcb2b7a9 isort: added config to workaround persistent misclassification of paho.mqtt.client 1 month ago
.pylintrc 1574063886 mqtt message on topic systemctl/hostname/poweroff schedules poweroff with delay of 4 seconds 2 months ago
CHANGELOG.md c7796a8701 release v0.3.0 1 month ago
COPYING 1574063886 mqtt message on topic systemctl/hostname/poweroff schedules poweroff with delay of 4 seconds 2 months ago
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Makefile 7887079ebe make: added docker-push target 1 month ago
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mypy.ini 1574063886 mqtt message on topic systemctl/hostname/poweroff schedules poweroff with delay of 4 seconds 2 months ago
setup.py 20dafb5c80 document shutdown report on systemctl/hostname/preparing-for-shutdown 1 month ago

README.md

systemctl-mqtt

CI Pipeline Status Coverage Status Last Release Compatible Python Versions

MQTT client triggering & reporting shutdown on systemd-based systems

Setup

$ pip3 install --user --upgrade systemctl-mqtt
$ systemctl-mqtt --mqtt-host HOSTNAME_OR_IP_ADDRESS

On debian-based systems, dependencies can optionally be installed via:

$ sudo apt-get install --no-install-recommends python3-dbus python3-gi python3-paho-mqtt

Schedule poweroff by sending a MQTT message to topic systemctl/hostname/poweroff.

$ mosquitto_pub -h MQTT_BROKER -t systemctl/hostname/poweroff -n

Shutdown Report

systemctl-mqtt subscribes to logind's PrepareForShutdown signal.

systemctl halt|poweroff|reboot triggers a message with payload true on topic systemctl/hostname/preparing-for-shutdown.

Home Assistant 🏡

Sample Setup

Send Poweroff Command

# https://www.home-assistant.io/docs/mqtt/broker/#configuration-variables
mqtt:
  broker: BROKER_HOSTNAME_OR_IP_ADDRESS
  # credentials, additional options…

script:
  poweroff_raspberry_pi:
    sequence:
      service: mqtt.publish
      data:
        topic: systemctl/raspberrypi/poweroff

homeassistant:
  customize:
    script.poweroff_raspberry_pi:
      friendly_name: poweroff pi
      icon: mdi:power

Trigger Automation on Shutdown

automation:
- trigger:
    platform: mqtt
    topic: systemctl/raspberrypi/preparing-for-shutdown
    payload: 'true'
  action:
    service: switch.turn_off
    entity_id: switch.desk_lamp

Automatic Discovery of Shutdown Sensor (Optional)

After enabling MQTT device discovery home assistant will automatically detect a new entity binary_sensor.hostname_preparing_for_shutdown.

mqtt:
  broker: BROKER_HOSTNAME_OR_IP_ADDRESS
  discovery: true
  # credentials, additional options…

homeassistant discovery binary_sensor.hostname_preparing_for_shutdown

When using a custom discovery_prefix pass --homeassistant-discovery-prefix custom-prefix to systemctl-mqtt.

Docker 🐳

  1. Clone this repository.
  2. Edit docker-compose.yml.
  3. Load AppArmor profile: sudo apparmor_parser ./docker-apparmor-profile
  4. sudo docker-compose up --build

Pre-built docker image are available at https://hub.docker.com/r/fphammerle/systemctl-mqtt/tags

Annotation of signed tags docker/* contains docker image digests: https://github.com/fphammerle/systemctl-mqtt/tags

MQTT Authentication

systemctl-mqtt --mqtt-username me --mqtt-password secret …
# or
systemctl-mqtt --mqtt-username me --mqtt-password-file /var/lib/secrets/mqtt/password …