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Check your Home Assistant configuration from the frontend, or automatically when the configuration is updated, and optionally restart HASS automatically!

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Check Config

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Requires AppDaemon

As of version 2.0, I am only testing against AppDaemon 4.x. The app will likely continue to work with AppDaemon 3.x, but if you have an issue and are using AppDaemon 3.x, I will not be able to provide support.

Allows you to check your Home Assistant configuration from within Lovelace, or automatically using when configuration.yaml is updated. Outputs the results to a sensor and can automatically restart HASS if configuration is valid.

Installation

This app is best installed using HACS, so that you can easily track and download updates.

Alternatively, you can download the check-config directory from inside the apps directory here to your local apps directory, then add the configuration to enable the checkconfig module.

How it works

The app will auto-generate an entity called sensor.config_result. It has an initial value of - until a configuration check is actually run. After running a check, it will change to valid or invalid. If it is invalid, the detail attribute on the sensor will include additional data about the specific failure. If it is valid, Home Assistant can restart automatically, or you can configure it to not restart until you do so manually.

App configuration

Add the following to your apps.yaml file:

check_config:
  module: checkconfig
  class: CheckConfig
key optional type default description
module False string checkconfig
class False string CheckConfig
restart True boolean True By default, Home Assistant will be restarted if the configuration is valid. Setting this to false will allow you to restart at the time of your choosing.
folder_watcher True boolean False If you are using the folder_watcher component (see "Using with Folder Watcher" below), the app can automatically monitor for changes to configuration.yaml and run the check any time the file is changed.

Using With Lovelace

You will need to create an entity called script.check_config, but this script can be blank and won't actually perform any steps. It simply allows us to call the config check from Lovelace. Copying and pasting the following into your scripts.yaml file will add the proper script.

check_config:
  sequence: []
  alias: Check Configuration

The following is a basic example of a Lovelace example to run the check and show the results.

type: entities
title: Check Configuration
show_header_toggle: false
entities:
  - script.check_config
  - sensor.config_result

Using with Folder Watcher

Note: Folder Watcher support currently does not support split configuration files, nor will it monitor changes to secrets.yaml. Support for secrets.yaml and split configurations is planned for the next release. In addition, when using the Folder Watcher configuration, the Lovelace script configuration above will no longer work (but the sensor will still update for you to optionally display in Lovelace).

As of version 0.3.0, the Folder Watcher component can be integrated into this app. The app will then automatically trigger a configuration check when your configuration.yaml file is updated. You can then either have Home Assistant restart automatically, or continue to utilize the sensor updating as you see fit. For example, I have Telegram set up on the computer I perform my configuration updates on. So, I now receive a notification from Telegram on my desktop seconds after saving a change to configuration.yaml. If the config is invalid, the specific issue is called out in the notification. Otherwise, if it's valid, I have an inline keyboard button that will restart Home Assistant when pressed.

The example code for this notification setup is included in confignotify.py in this repository. Since everyone's notification setup is different, I am not attempting to include it in the main app at this time, but you are free to use what I have created as a starting point.

Here is the YAML I'm using to include folder_watcher in my setup to monitor configuration.yaml:

folder_watcher:
  - folder: /config
    patterns:
      - '*.yaml'

You also need your config directory under whitelist_external_dirs in the homeassistant section of configuration.yaml:

homeassistant:
  whitelist_external_dirs:
    - /config

Example Screenshots

Advanced Lovelace Config Examples

As a picture elements card with options to reload elements of your configuration, or a full restart:

type: custom:vertical-stack-in-card
cards:
  - type: picture-elements
    image: /local/images/BG_blank_slim.png
    elements:

      - type: image
        image: /local/images/icons8-administrative-tools-80.png
        tap_action:
          action: call-service
          service: script.check_config
        style:
          top: 50%
          left: 10%
          width: 10%

      - type: image
        image: /local/images/icons8-restart-80.png
        tap_action:
          action: call-service
          service: homeassistant.restart
        style:
          top: 50%
          left: 26%
          width: 10%

      - type: image
        image: /local/images/icons8-source-code-80.png
        tap_action:
          action: call-service
          service: homeassistant.reload_core_config
        style:
          top: 50%
          left: 42%
          width: 10%

      - type: image
        image: /local/images/icons8-variation-80.png
        tap_action:
          action: call-service
          service: group.reload
        style:
          top: 50%
          left: 58%
          width: 10%
            
      - type: image
        image: /local/images/icons8-automation-80.png
        tap_action:
          action: call-service
          service: automation.reload
        style:
          top: 50%
          left: 74%
          width: 10%

      - type: image
        image: /local/images/icons8-note-80.png
        tap_action:
          action: call-service
          service: script.reload
        style:
          top: 50%
          left: 90%
          width: 10%


  - type: entities
    show_header_toggle: false
    entities:
      - sensor.config_result

Issues/Feature Requests

Please log any issues or feature requests in this GitHub repository for me to review.

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Check your Home Assistant configuration from the frontend, or automatically when the configuration is updated, and optionally restart HASS automatically!

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