mirror of
https://github.com/home-assistant/home-assistant.io.git
synced 2025-05-04 10:08:57 +00:00
44 lines
1.4 KiB
Markdown
44 lines
1.4 KiB
Markdown
---
|
|
layout: page
|
|
title: "Multiple Instances"
|
|
description: "Quick primer on how multiple instances work together."
|
|
date: 2016-04-16 14:24 -07:00
|
|
sidebar: true
|
|
comments: false
|
|
sharing: true
|
|
footer: true
|
|
---
|
|
|
|
Home Assistant supports running multiple synchronized instances using a master-slave model. Whenever `events.fire` or `states.set` is called on the salve it will forward it to the master. The master will replicate all events and changed states to its slaves.
|
|
|
|
<p class='img'>
|
|
<a href='/images/architecture/architecture-remote.png'>
|
|
<img src='/images/architecture/architecture-remote.png' />
|
|
</a>
|
|
Overview of the Home Assistant architecture for multiple devices.
|
|
</p>
|
|
|
|
A slave instance can be started with the following code and has the same support for components as a master instance.
|
|
|
|
```python
|
|
import homeassistant.remote as remote
|
|
import homeassistant.bootstrap as bootstrap
|
|
|
|
# Location of the Master API: host, password, port.
|
|
# Password and port are optional.
|
|
remote_api = remote.API("127.0.0.1", "password", 8124)
|
|
|
|
# Initialize slave
|
|
hass = remote.HomeAssistant(remote_api)
|
|
|
|
# To add an interface to the slave on localhost:8123
|
|
bootstrap.setup_component(hass, 'frontend')
|
|
|
|
hass.start()
|
|
hass.block_till_stopped()
|
|
```
|
|
|
|
<p class='note'>
|
|
Because each slave maintains its own Service Registry it is possible to have multiple slaves respond to one service call.
|
|
</p>
|