MariaDB Container cheat sheet
- Get the images
Images can be found on MariaDB Docker Hub.
To get the list of images run
$ docker images ls
- Create the network
$ docker network create mynetwork
It is good practice to create the Docker network and attach the container to the network.
- Start the container with server options
To start the container in the background with the MariaDB server image run:
$ docker run --rm --detach \ --env MARIADB_ROOT_PASSWORD=sosecret \ --network mynetwork \ --name mariadb-server \ mariadb:latest
Additionally environment variables are also be provided.
- Get the list of running containers (specify the flag -a in case you want to see all containers)
$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES ad374ec8a272 mariadb:latest "docker-entrypoint.s…" 3 seconds ago Up 1 second 3306/tcp mariadb-server
- Start the client from the container
To start the mariadb client inside created container and run specific command, run following:
$ docker exec -it mariadb-server mariadb -psosecret -e "SHOW PLUGINS"
- Inspect logs from the container
$ docker logs mariadb-server
In the logs you can find status information about the server, plugins, generated passwords, errors and so on.
- Restart the container
$ docker restart mariadb-server
- Run commands within the container
$ docker exec -it mariadb-server bash
- Use a volume to specify configuration options
$ docker run --detach --env MARIADB_USER=anel \ --env MARIADB_PASSWORD=anel \ --env MARIADB_DATABASE=my_db \ --env MARIADB_RANDOM_ROOT_PASSWORD=1 \ --volume $PWD/my_container_config:/etc/mysql/conf.d:z \ --network mynetwork \ --name mariadb-server1 \ mariadb:latest
One can specify custom configuration files through the /etc/mysql/conf.d volume during container startup.
- Use a volume to specify grants during container start
$ docker run --detach --env MARIADB_USER=anel\ --env MARIADB_PASSWORD=anel \ --env MARIADB_DATABASE=my_db \ --env MARIADB_RANDOM_ROOT_PASSWORD=1 \ --volume $PWD/my_init_db:/docker-entrypoint-initdb.d \ --network mynetwork \ --name mariadb-server1 \ mariadb:latest
User created with the environment variables has full grants only to the MARIADB_DATABASE. In order to override those grants, one can specify grants to a user, or execute any SQL statements from host file to docker-entrypoint-initdb.d. In the local_init_dir directory we can find the file, created like this:
$ echo "GRANT ALL PRIVILEGES ON *.* TO anel;" > my_init_db/my_grants.sql
