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This integration is by default enabled as dependency of the history integration.

This integration constantly saves data. If you use the default configuration, the data will be saved on the media Home Assistant is installed on. In case of Raspberry Pi with an SD card, it might affect your system’s reaction time and life expectancy of the storage medium (the SD card). It is therefore recommended to set the commit_interval to higher value, e.g. 30s, limit the amount of stored data (e.g., by excluding devices) or store the data elsewhere (e.g., another system).

Home Assistant uses SQLAlchemy , which is an Object Relational Mapper (ORM). This makes it possible to use a number of database solutions.

The supported database solutions are:

MariaDB ≥ 10.3 MySQL ≥ 8.0 PostgreSQL ≥ 12 SQLite ≥ 3.31.0

Although SQLAlchemy supports database solutions in addition to the ones supported by Home Assistant, it will behave differently on different databases, and features relied on by the recorder may work differently, or not at all, in different databases.

The default, and recommended, database engine is SQLite which does not require any configuration. The database is stored in your Home Assistant configuration directory (’/config/’) and is named home-assistant_v2.db .

To change the defaults for the recorder integration in your installation, add the following to your configuration.yaml file:

# Example configuration.yaml entry
recorder:
 Configuration Variables
Looking for your configuration file?
  recorder map Required

Enables the recorder integration. Only allowed once.

auto_repack boolean (Optional, default: true)

Automatically repack the database every second sunday after the auto purge. Without a repack, the database may not decrease in size even after purging, which takes up disk space and can make Home Assistant slow. If you disable auto_repack it is recommended that you create an automation to call the recorder.purge periodically. This flag has no effect if auto_purge is disabled.

commit_interval integer (Optional, default: 5)

How often (in seconds) the events and state changes are committed to the database. The default of 5 allows events to be committed almost right away without trashing the disk when an event storm happens. Increasing this will reduce disk I/O and may prolong disk (SD card) lifetime with the trade-off being that the database will lag (the logbook and history will not lag, because the changes are streamed to them immediatelly). If this is set to 0 (zero), commit are made as soon as possible after an event is processed.

Configure Filter

By default, no entity will be excluded. To limit which entities are being exposed to recorder, you can use the include and exclude parameters.

# Example filter to include specified domains and exclude specified entities
recorder:
  include:
    domains:
      - alarm_control_panel
      - light
    entity_globs:
      - binary_sensor.*_occupancy
  exclude:
    entities:
      - light.kitchen_light

Filters are applied as follows:

  • No filter
  • All entities included
  • Only includes
  • Entity listed in entities include: include
  • Otherwise, entity matches domain include: include
  • Otherwise, entity matches glob include: include
  • Otherwise: exclude
  • Only excludes
  • Entity listed in exclude: exclude
  • Otherwise, entity matches domain exclude: exclude
  • Otherwise, entity matches glob exclude: exclude
  • Otherwise: include
  • Domain and/or glob includes (may also have excludes)
  • Entity listed in entities include: include
  • Otherwise, entity listed in entities exclude: exclude
  • Otherwise, entity matches glob include: include
  • Otherwise, entity matches glob exclude: exclude
  • Otherwise, entity matches domain include: include
  • Otherwise: exclude
  • Domain and/or glob excludes (no domain and/or glob includes)
  • Entity listed in entities include: include
  • Otherwise, entity listed in exclude: exclude
  • Otherwise, entity matches glob exclude: exclude
  • Otherwise, entity matches domain exclude: exclude
  • Otherwise: include
  • No Domain and/or glob includes or excludes
  • Entity listed in entities include: include
  • Otherwise: exclude
  • The following characters can be used in entity globs:

    * - The asterisk represents zero, one, or multiple characters ? - The question mark represents a single character

    If you only want to hide events from your history, take a look at the history integration. The same goes for the logbook. But if you have privacy concerns about certain events or want them in neither the history or logbook, you should use the exclude/include options of the recorder integration. That way they aren’t even in your database, you can reduce storage and keep the database small by excluding certain often-logged events (like sensor.last_boot).

    Common filtering examples

    Defining domains and entities to exclude (i.e. blocklist) is convenient when you are basically happy with the information recorded, but just want to remove some entities or domains.

    # Example configuration.yaml entry with exclude
    recorder:
      purge_keep_days: 5
      db_url: sqlite:////home/user/.homeassistant/test
      exclude:
        domains:
          - automation
          - update
        entity_globs:
          - sensor.sun*
          - weather.*
        entities:
          - sensor.date
          - sensor.last_boot # Comes from 'systemmonitor' sensor platform
          - sun.sun # Don't record sun data
        event_types:
          - call_service # Don't record service calls
    

    Defining domains and entities to record by using the include configuration (i.e. allowlist) is convenient if you have a lot of entities in your system and your exclude lists possibly get very large, so it might be better just to define the entities or domains to record.

    # Example configuration.yaml entry with include
    recorder:
      include:
        domains:
          - sensor
          - switch
          - media_player
    

    You can also use the include list to define the domains/entities to record, and exclude some of those within the exclude list. This makes sense if you, for instance, include the sensor domain, but want to exclude some specific sensors. Instead of adding every sensor entity to the include entities list just include the sensor domain and exclude the sensor entities you are not interested in.

    # Example configuration.yaml entry with include and exclude
    recorder:
      include:
        domains:
          - sensor
          - switch
          - media_player
      exclude:
        entities:
          - sensor.last_boot
          - sensor.date
        entity_globs:
          - sensor.weather_*
     Services
     Service purge
    

    Call the service recorder.purge to start a purge task which deletes events and states older than x days, according to keep_days service data. Note that purging will not immediately decrease disk space usage but it will significantly slow down further growth.

    Service data attribute Optional Description keep_days The number of history days to keep in recorder database (defaults to the integration purge_keep_days configuration) repack When using SQLite or PostgreSQL this will rewrite the entire database. When using MySQL or MariaDB it will optimize or recreate the events and states tables. This is a heavy operation that can cause slowdowns and increased disk space usage while it runs. Only supported by SQLite, PostgreSQL, MySQL and MariaDB. apply_filter Apply entity_id and event_type filter in addition to time based purge. Useful in combination with include / exclude filter to remove falsely added states and events. Combine with repack: true to reduce database size. entity_globs A list of regular expressions that identify entities to purge from the recorder database. keep_days Number of history days to keep in the database of matching rows. The default of 0 days will remove all matching rows.

    Note: The entity_id is only optional when used in automations.yaml or scripts.yaml. When using the UI to call this service then it is mandatory to specify at least one entity_id using the Target Picker or via YAML mode.

    Example automation to remove data rows for specific entities

    The below automation will remove history for sensor.power_sensor_0 older than 5 days at 04:15:00 every day.

    alias: "Purge noisy power sensors"
    trigger:
      - platform: time
        at: "04:15:00"
    action:
      - service: recorder.purge_entities
        data:
          keep_days: 5
        target:
          entity_id: sensor.power_sensor_0
    mode: single
     Service disable
    

    Call the service recorder.disable to stop saving events and states to the database.

    Service enable

    Call the service recorder.enable to start again saving events and states to the database. This is the opposite of recorder.disable.

    Custom database engines

    SQLite is the most tested, and newer version of Home Assistant are highly optimized to perform well when using SQLite.

    When choosing another option, you should be comfortable in the role of the database administrator, including making backups of the external database.

    Here are examples to use with the db_url configuration option.

    Some installations of MariaDB/MySQL may require an ALTERNATE_PORT (3rd-party hosting providers or parallel installations) to be added to the SERVER_IP, e.g., mysql://user:[email protected]_IP:ALTERNATE_PORT/DB_NAME?charset=utf8mb4.

    When using a MariaDB or MySQL server, adding +pymysql to the URL will use the pure Python MySQL library, which is slower but may be required if the C MySQL library is not available.

    When using the official Docker image, the C MySQL library will always be available. pymysql is most commonly used with venv where the C MySQL library is not installed.

    Unix Socket connections always bring performance advantages over TCP, if the database is on the same host as the recorder instance (i.e., localhost).

    If you want to use Unix Sockets for PostgreSQL you need to modify the pg_hba.conf. See PostgreSQL

    Database startup

    If you are running a database server instance on the same server as Home Assistant then you must ensure that this service starts before Home Assistant. For a Linux instance running Systemd (Raspberry Pi, Debian, Ubuntu and others) you should edit the service file. To help facilitate this, db_max_retry and db_retry_wait variables have been added to ensure the recorder retries the connection to your database enough times, for your database to start up.

    sudo nano /etc/systemd/system/[email protected]
    

    and add the service for the database, for example, PostgreSQL:

    [Unit]
    Description=Home Assistant
    After=network.target postgresql.service
    

    Save the file then reload systemctl:

    sudo systemctl daemon-reload
     Installation notes
    

    Not all Python bindings for the chosen database engine can be installed directly. This section contains additional details that should help you to get it working.

    MariaDB and MySQL MariaDB versions before 10.5.17, 10.6.9, 10.7.5, and 10.8.4 suffer from a performance regression which can result in the system becoming overloaded while querying history data or purging the database.

    Make sure the default character set of your database server is set to utf8mb4 (see MariaDB documentation). If you are in a virtual environment, don’t forget to activate it before installing the mysqlclient Python package described below.

    [email protected]:~ $ sudo -u homeassistant -H -s
    [email protected]:~$ source /srv/homeassistant/bin/activate
    (homeassistant) [email protected]:~$ pip3 install mysqlclient
    

    For MariaDB you may have to install a few dependencies. If you’re using MariaDB 10.3, the package libmariadb-dev-compat must also be installed. Please install the correct packages based on your MariaDB version.

    On the Python side we use the mysqlclient:

    sudo apt-get install libmariadbclient-dev libssl-dev
    pip3 install mysqlclient
    

    For MySQL you may have to install a few dependencies. You can choose between pymysql and mysqlclient:

    sudo apt-get install default-libmysqlclient-dev libssl-dev
    pip3 install mysqlclient
    

    After installing the dependencies, it is required to create the database manually. During the startup, Home Assistant will look for the database specified in the db_url. If the database doesn’t exist, it will not automatically create it for you.

    The database engine must be InnoDB as MyIASM is not supported.

    SET GLOBAL default_storage_engine = 'InnoDB';
    CREATE DATABASE DB_NAME CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
    

    Where DB_NAME is the name of your database

    Once Home Assistant finds the database, with the right level of permissions, all the required tables will then be automatically created and the data will be populated accordingly.

    PostgreSQL

    Create the PostgreSQL database with utf8 encoding. The PostgreSQL default encoding is SQL_ASCII. From the postgres user account;

    createdb -E utf8 DB_NAME
    

    Where DB_NAME is the name of your database

    If the Database in use is not utf8, adding ?client_encoding=utf8 to the db_url may solve any issue.

    For PostgreSQL you may have to install a few dependencies:

    sudo apt-get install postgresql-server-dev-X.Y
    pip3 install psycopg2
    

    For using Unix Sockets, first create your user from the postgres user account;

    createuser USER_NAME
    

    Where USER_NAME is the name of the user running the Home Assistant instance (see securing your installation).

    Then add the following line to your pg_hba.conf:

    local DB_NAME USER_NAME peer

    Where DB_NAME is the name of your database and USER_NAME is the name of the user running the Home Assistant instance (see securing your installation).

    Reload the PostgreSQL configuration after that:

    $ sudo -i -u postgres psql -c "SELECT pg_reload_conf();"
     pg_reload_conf
    ----------------
    (1 row)
    

    A service restart will work as well.

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    The Recorder system was introduced in Home Assistant pre 0.7, and it's used by 99.3% of the active installations. Its IoT class is Local Push and it scores internal on our quality scale. View source on GitHub
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