Component to link multiple Home-Assistant instances together.

This component will set up the following platforms.

Platform	Description
remote_homeassistant	Link multiple Home-Assistant instances together .

The master instance connects to the Websocket APIs of the slaves, the connection options are specified via the host, port, and secure configuration parameters. An API password can also be set via api_password. To ignore SSL warnings in secure mode, set the verify_ssl parameter to false.

After the connection is completed, the remote states get populated into the master instance. The entity ids can optionally be prefixed via the entity_prefix parameter.

The component keeps track which objects originate from which instance. Whenever a service is called on an object, the call gets forwarded to the particular slave instance.

When the connection to the remote instance is lost, all previously published states are removed again from the local state registry.

A possible use case for this is to be able to use different Z-Wave networks, on different Z-Wave sticks (with the second one possible running on another computer in a different location).

Installation

If you use HACS:

1. Click install.
2. Add remote_homeassistant: to your HA configuration.

Otherwise:

1. To use this plugin, copy the remote_homeassistant folder into your custom_components folder.
2. Add remote_homeassistant: to your HA configuration.

Configuration

To integrate remote_homeassistant into Home Assistant, add the following section to your configuration.yaml file:

Simple example:

# Example configuration.yaml entry
remote_homeassistant:
  instances:
  - host: raspberrypi.local

Full example:

# Example configuration.yaml entry
remote_homeassistant:
  instances:
  - host: localhost
    port: 8124
  - host: localhost
    port: 8125
    secure: true
    verify_ssl: false
    access_token: !secret access_token
    api_password: !secret http_password
    entity_prefix: "slave02_"
    include:
      domains:
      - sensor
      - switch
      - group
      entities:
      - zwave.controller
      - zwave.desk_light
    exclude:
      domains:
      - persistent_notification
      entities:
      - group.all_switches
    filter:
    - entity_id: sensor.faulty_pc_energy
      above: 100
    - unit_of_measurement: W
      below: 0
      above: 1000
    - entity_id: sensor.faulty_*_power
      unit_of_measurement: W
      below: 500
    subscribe_events:
    - state_changed
    - service_registered
    - zwave.network_ready
    - zwave.node_event

host:
  host: Hostname or IP address of remote instance.
  required: true
  type: string
port:
  description: Port of remote instance.
  required: false
  type: int
secure:
  description: Use TLS (wss://) to connect to the remote instance.
  required: false
  type: bool
verify_ssl:
  description: Enables / disables verification of the SSL certificate of the remote instance.
  required: false
  type: bool
  default: true
access_token:
  description: Access token of the remote instance, if set. Mutually exclusive with api_password
  required: false
  type: string
api_password:
  description: DEPRECTAED! API password of the remote instance, if set. Mutually exclusive with access_token
  required: false
  type: string
entity_prefix:
  description: Prefix for all entities of the remote instance.
  required: false
  type: string
include:
  description: Configures what should be included from the remote instance. Values set by the exclude lists will take precedence.
  required: false
  default: include everything
  type: mapping of
    entities:
      description: The list of entity ids to be included from the remote instance
      type: list
    domains:
      description: The list of domains to be included from the remote instance
      type: list
exclude:
  description: Configures what should be excluded from the remote instance
  required: false
  default: exclude nothing
  type: mapping of
    entities:
      description: The list of entity ids to be excluded from the remote instance
      type: list
    domains:
      description: The list of domains to be excluded from the remote instance
      type: list
filter:
  description: Filters out states above or below a certain threshold, e.g. outliers reported by faulty sensors
  required: false
  type: list of
    entity_id:
      description: which entities the filter should match, supports wildcards
      required: false
      type: string
    unit_of_measurement
      description: which units of measurement the filter should match
      required: false
      type: string
    above:
      description: states above this threshold will be ignored
      required: false
      type: float
    below:
      description: states below this threshold will be ignored
      required: false
      type: float
subscribe_events:
  description: Further list of events, which should be forwarded from the remote instance. If you override this, you probably will want to add state_changed!!
  required: false
  type: list
  default: 
  - state_changed
  - service_registered

Special notes

If you have remote domains (e.g. switch), that are not loaded on the master instance you need to add a dummy entry on the master, otherwise you'll get a Call service failed error.

E.g. on the master:

switch:

to enable all switch services.

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See also the discussion on home-assistant/core#13876 and home-assistant/architecture#246 for this component