Monocker

Monitors Docker (MONitors dOCKER) containers and alerts on 'state' change

Features

Telegram integration
Pushbullet integration
Pushover integration
Discord integration (via webhooks)
Monitors 'state' changes for all containers (every 10 seconds)
Specific inclusions or exclusions of containers to monitor
Optionally, only alert on state changes to (paused, exited, running (unhealthy), or dead)
In-built Docker healthcheck

Future Considerations

Additional messaging platform support

Installation

version: '2.4'

services:
  monocker:
    container_name: monocker
    image: petersem/monocker
    environment:
      # Optional - set this to use a docker interface other than the default
      DOCKER_HOST: tcp://docker-socket-proxy:2375
      # Optional label to preface messages. Handy if you are running multiple versions of Monocker
      SERVER_LABEL: 'Dev'
      # Specify the messaging platform and details, or leave blank if only wanting container logs (pick one only)
      MESSAGE_PLATFORM: 'telegram@your_bot_id@your_chat_id'
      # MESSAGE_PLATFORM: 'pushbullet@your_api_key@your_device_id'
      # MESSAGE_PLATFORM: 'pushover@your_user_key@your_app_api_token'
      # MESSAGE_PLATFORM: 'discord@webhook_url'
      # MESSAGE_PLATFORM: ''
      # Optional - includes or excludes specified containers - default behaviour is false
      LABEL_ENABLE: 'false'
      # Optional - only show when container state changes to being offline (paused, exited, running (unhealthy), or dead) - default is false
      ONLY_OFFLINE_STATES: 'false'
      # [Optional] - Regardless of any other settings, you can ignore or include 'exited'
      EXCLUDE_EXITED: 'false'      
      # [Optional] - Set the poll period in seconds. Defaults to 10 seconds, which is also the minimum. 
      PERIOD: 10
      # [Optional] - Supress startup messages from being sent. Default is false
      DISABLE_STARTUP_MSG: 'false'
      # [optional] - adds SHA ID for all container references. 'true' or 'false' (default)
      SHA: 'false'
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
    restart: unless-stopped

For Telegram: See documentation for how to obtain ID values
For Pushbullet: Open Pushbullet in a browser and get device ID from URL Example
For Pushover: See pushover doco for user key and app token
For Discord: See Discord doco for how to create a webhook and get the url

DOCKER_HOST

This is an optional value, and if set will change the interface used to communicate with Docker. This can be a UNIX socket (unix://), Windows named pipe (npipe://) or TCP connection (tcp://). If it's a pipe or socket, be sure to mount the connection as a volume. If the connection is proxied, ensure that GET requests are allowed on the /containers endpoint.

By default, this value is unset and the connection will use /var/run/docker.sock.

LABEL_ENABLE

This is an optional value, and defaults to false if it is not specified. This feature allows you to specify (with labels) 'either' specific containers to monitor or exclude from monitoring.

If it is set to false, then all containers will be monitored except for ones with the following label in their YAML.

    labels:
      monocker.enable: 'false'

If it is set to true, only containers with the following label will be monitored

    labels:
      monocker.enable: 'true'

If you just want to monitor everything, then set LABEL_ENABLE: 'false' or just leave it out altogether.

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Discuss issues or feature requests in the monocker channel on Discord

This application uses semantic versioning. See here for more details.