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

title	slug
Docker Volumes	/deployment/docker/volumes

Docker Volumes

Advance section

Volumes provide the ability to connect specific filesystem paths of the container back to the host machine. If a directory or a file in the container is mounted, changes in that directory or file can also be seen on the host machine.we are going to use a mapping of a directory present on the host macine with the container path.

To make changes to the docker-compose.yaml file you will need to download it from the release page here. The latest version is at the top of the page

Docker Volumes

Volumes for MYSQL container:

Following are the changes we have to do while mounting the directory for mysql in OpenMetadata.

• Create a directory to keep your MySQL data or files in the host machine.

mkdir -p /opt/openmetadata/db

• Update or add the volume in the docker-compose.yml file Open the file docker-compose.yml downloaded from the Release page Link .

version: "3.9"
services:
  mysql:
    ...
    volumes:
      - /opt/openmetadata/db:/var/lib/mysql
    ...

Volumes for PostgreSQL container:

Following are the changes we have to do while mounting the directory for postgresql in OpenMetadata.

• Create a directory to keep your PostgreSQL data or files in the host machine.

mkdir -p /opt/openmetadata/db

• Update or add the volume in the docker-compose.yml file. Open the file docker-compose.yml downloaded from the Release page Link .

version: "3.9"
services:
 postgresql:
    ...
    volumes:
      - /opt/openmetadata/db:/var/lib/postgresql
    ...

Volumes for ingestion container

Following are the changes we have to do while mounting the directory for ingestion in OpenMetadata. Here we will maintaing different directory for dag_generated_configs, dags and secrets.

• Create a directory to keep your ingestion data or files in the host machine.

mkdir -p /opt/openmetadata/dag_config /opt/openmetadata/dags /opt/openmetadata/secrets

• Update or add the volume in the docker-compose.yml file. Open the file docker-compose.yml downloaded from the Release page Link .

version: "3.9"
services:
  ingestion:
    ...
    volumes:
      - /opt/openmetadata/dag_config:/opt/airflow/dag_generated_configs
      - /opt/openmetadata/dags:/opt/airflow/dags
      - /opt/openmetadata/secrets:/tmp
    ...

Once these changes are done in the docker-compose.yml file It should look simlarly in the below format

version: "3.9"
services:
  mysql:
    container_name: openmetadata_mysql
    image: openmetadata/db:0.12.2
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: password
    expose:
      - 3306
    volumes:
      - /opt/openmetadata/db:/var/lib/mysql
    networks:
      app_net:
        ipv4_address: 172.16.240.10
  ingestion:
    container_name: openmetadata_ingestion
    image: openmetadata/ingestion:0.12.2
    depends_on:
      - mysql
    expose:
      - 8080
    ports:
      - 8080:8080
    networks:
      - app_net
    extra_hosts:
      - "localhost:172.16.240.10"
      - "localhost:172.16.240.11"
      - "localhost:172.16.240.13"
    volumes:
      - /opt/openmetadata/dag_config:/opt/airflow/dag_generated_configs
      - /opt/openmetadata/dags:/opt/airflow/dags
      - /opt/openmetadata/secrets:/tmp

Once these changes are done, restart the container via:

docker compose down && docker compose up -d