18.104.22.168 Basic Steps for MySQL Server Deployment with Docker
The MySQL Docker images maintained by the MySQL team are built specifically for Linux platforms. Other platforms are not supported, and users using these MySQL Docker images on them are doing so at their own risk. See the discussion here for some known limitations for running these containers on non-Linux operating systems.
Downloading the server image in a separate step is not strictly necessary; however, performing this step before you create your Docker container ensures your local image is up to date. To download the MySQL Community Edition image, run this command:
docker pull mysql/mysql-server:tag
tag is the label for the image version you want to pull (for example,
: is omitted, the
latest label is used, and the image for the latest GA version of MySQL Community Server is downloaded. Refer to the list of tags for available versions on the mysql/mysql-server page in the Docker Hub .
To download the MySQL Enterprise Edition image, visit the My Oracle Support website, sign in to your Oracle account, and perform these steps once you are on the landing page:
Go to the Patch Search region and, on the Search tab, switch to the Product or Family (Advanced) subtab.
Enter “MySQL Server” for the field, and the desired version number in the field.
Use the dropdowns for additional filters to select “Docker” in the text field.— , and enter
The following figure shows the search settings for a MySQL Enterprise Edition image:
Click thebutton and, from the result list, select the version you want, and click the button.
In the File Download dialogue box that appears, click and download the
.zipfile for the Docker image.
Unzip the downloaded
.zip archive to obtain the tarball inside (
mysql-enterprise-server-), and then load the image by running this command:
docker load -i mysql-enterprise-server-version.tar
You can list downloaded Docker images with this command:
shell> docker images REPOSITORY TAG IMAGE ID CREATED SIZE mysql/mysql-server latest 3157d7f55f8d 4 weeks ago 241MB
To start a new Docker container for a MySQL Server, use the following command:
docker run --name=container_name -d image_name:tag
The image name can be obtained using the docker images command, as explained in Downloading a MySQL Server Docker Image. The
--name option, for supplying a custom name for your server container, is optional; if no container name is supplied, a random one is generated.
For example, to start a new Docker container for the MySQL Community Server, use this command:
docker run --name=mysql1 -d mysql/mysql-server:5.7
To start a new Docker container for the MySQL Enterprise Server with a Docker image downloaded from My Oracle Support, use this command:
docker run --name=mysql1 -d mysql/enterprise-server:5.7
If the Docker image of the specified name and tag has not been downloaded by an earlier docker pull or docker run command, the image is now downloaded. Initialization for the container begins, and the container appears in the list of running containers when you run the docker ps command. For example:
shell> docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES a24888f0d6f4 mysql/mysql-server "/entrypoint.sh my..." 14 seconds ago Up 13 seconds (health: starting) 3306/tcp, 33060/tcp mysql1
The container initialization might take some time. When the server is ready for use, the
STATUS of the container in the output of the docker ps command changes from
(health: starting) to
-d option used in the docker run command above makes the container run in the background. Use this command to monitor the output from the container:
docker logs mysql1
Once initialization is finished, the command's output is going to contain the random password generated for the root user; check the password with, for example, this command:
shell> docker logs mysql1 2>&1 | grep GENERATED GENERATED ROOT PASSWORD: Axegh3kAJyDLaRuBemecis&EShOs
Once the server is ready, you can run the mysql client within the MySQL Server container you just started, and connect it to the MySQL Server. Use the docker exec -it command to start a mysql client inside the Docker container you have started, like the following:
docker exec -it mysql1 mysql -uroot -p
When asked, enter the generated root password (see the last step in Starting a MySQL Server Instance above on how to find the password). Because the
MYSQL_ONETIME_PASSWORD option is true by default, after you have connected a mysql client to the server, you must reset the server root password by issuing this statement:
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'password';
password with the password of your choice. Once the password is reset, the server is ready for use.
To have shell access to your MySQL Server container, use the docker exec -it command to start a bash shell inside the container:
shell> docker exec -it mysql1 bash bash-4.2#
You can then run Linux commands inside the container. For example, to view contents in the server's data directory inside the container, use this command:
bash-4.2# ls /var/lib/mysql auto.cnf ca.pem client-key.pem ib_logfile0 ibdata1 mysql mysql.sock.lock private_key.pem server-cert.pem sys ca-key.pem client-cert.pem ib_buffer_pool ib_logfile1 ibtmp1 mysql.sock performance_schema public_key.pem server-key.pem
To stop the MySQL Server container we have created, use this command:
docker stop mysql1
docker stop sends a SIGTERM signal to the mysqld process, so that the server is shut down gracefully.
Also notice that when the main process of a container (mysqld in the case of a MySQL Server container) is stopped, the Docker container stops automatically.
To start the MySQL Server container again:
docker start mysql1
To stop and start again the MySQL Server container with a single command:
docker restart mysql1
To delete the MySQL container, stop it first, and then use the docker rm command:
docker stop mysql1
docker rm mysql1
If you want the Docker volume for the server's data directory to be deleted at the same time, add the
-v option to the docker rm command.
Before performing any upgrade to MySQL, follow carefully the instructions in Section 2.11, “Upgrading MySQL”. Among other instructions discussed there, it is especially important to back up your database before the upgrade.
The instructions in this section require that the server's data and configuration have been persisted on the host. See Persisting Data and Configuration Changes for details.
Follow these steps to upgrade a Docker installation of MySQL 5.6 to 5.7:
Stop the MySQL 5.6 server (container name is
mysql56in this example):
docker stop mysql56
Download the MySQL 5.7 Server Docker image. See instructions in Downloading a MySQL Server Docker Image; make sure you use the right tag for MySQL 5.7.
Start a new MySQL 5.7 Docker container (named
mysql57in this example) with the old server data and configuration (with proper modifications if needed—see Section 2.11, “Upgrading MySQL”) that have been persisted on the host (by bind-mounting in this example). For the MySQL Community Server, run this command:
docker run --name=mysql57 \ --mount type=bind,src=/path-on-host-machine/my.cnf,dst=/etc/my.cnf \ --mount type=bind,src=/path-on-host-machine/datadir,dst=/var/lib/mysql \ -d mysql/mysql-server:5.7
If needed, adjust
mysql/mysql-serverto the correct repository name—for example, replace it with
mysql/enterprise-serverfor MySQL Enterprise Edition images downloaded from My Oracle Support .
Wait for the server to finish startup. You can check the status of the server using the docker ps command (see Starting a MySQL Server Instance for how to do that).
Run the mysql_upgrade utility in the MySQL 5.7 Server container:
docker exec -it mysql57 mysql_upgrade -uroot -p
When prompted, enter the root password for your old MySQL 5.6 Server.
Finish the upgrade by restarting the MySQL 5.7 Server container:
docker restart mysql57
For more topics on deploying MySQL Server with Docker like server configuration, persisting data and configuration, server error log, and container environment variables, see Section 22.214.171.124, “More Topics on Deploying MySQL Server with Docker”.