OpenMetadata/openmetadata-docs/content/deployment/docker/volumes.md

title	slug
Docker Volumes	/deployment/docker/volumes

Named volumes can persist data after we restart or remove a container. Also, it’s accessible by other containers.

For example:

version: 3.8
services:
  db:
    image:mysql
    restart:always
    environment:
       MYSQL_ROOT_PASSWORD: root
       MYSQL_DATABASE: test_db
    ports:
      - "3306:3306"
    volumes:
      - db_data:/var/lib/mysql
  volumes:
    db_data

Here, the first field is a unique name of the volume on a host machine. The second field is the path in the container.

Following are the changes we have to do while mounting the volume for ingestion in OpenMetadata

Update or add the volume in the docker-compose.yml file

Open the file docker-compose.yml downloaded from the Release page.

First, define the volumes at the top level of the file. Example:

volumes:
  ingestion-volume-dag-airflow:
  ingestion-volume-dags:
  ingestion-volume-tmp:

Then, add them in the service. Example:

- ingestion-volume-dag-airflow:/airflow/dag_generated_configs
- ingestion-volume-dags:/airflow/dags
- ingestion-volume-tmp:/tmp

Once these changes are done, restart the container via:

docker compose down && docker compose up -d

Verify the Named Volumes

Running docker volume ls will list all the volumes which are available on the host machine.

The default path where volumes get created in Linux is as follows:

/var/lib/docker/volumes/