![]() These variables are optional, used in conjunction to create a new user and to set that user's password. If a user/password was supplied (see below) then that user will be granted superuser access ( corresponding to GRANT ALL) to this database. This variable is optional and allows you to specify the name of a database to be created on image startup. In the above example, it was set to my-secret-pw. This variable is mandatory and specifies the password that will be set for the MySQL root superuser account. See also for documentation of environment variables which MySQL itself respects (especially variables like MYSQL_HOST, which is known to cause issues when used with this image). Do note that none of the variables below will have any effect if you start the container with a data directory that already contains a database: any pre-existing database will always be left untouched on container startup. When you start the mysql image, you can adjust the configuration of the MySQL instance by passing one or more environment variables on the docker run command line. If you would like to see a complete list of available options, just run: $ docker run -it -rm mysql:tag -verbose -help Environment Variables For example, if you want to change the default encoding and collation for all tables to use UTF-8 ( utf8mb4) just run the following: $ docker run -name some-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:tag -character-set-server=utf8mb4 -collation-server=utf8mb4_unicode_ci This will give you the flexibility to customize the container without needing a cnf file. Many configuration options can be passed as flags to mysqld. This will start a new container some-mysql where the MySQL instance uses the combined startup settings from /etc/mysql/my.cnf and /etc/mysql/conf.d/config-file.cnf, with settings from the latter taking precedence. If /my/custom/config-file.cnf is the path and name of your custom configuration file, you can start your mysql container like this (note that only the directory path of the custom config file is used in this command): $ docker run -name some-mysql -v /my/custom:/etc/mysql/conf.d -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:tag Please inspect the relevant files and directories within the mysql image itself for more details. The default configuration for MySQL can be found in /etc/mysql/my.cnf, which may !includedir additional directories such as /etc/mysql/conf.d or /etc/mysql/. The log is available through Docker's container log: $ docker logs some-mysql Using a custom MySQL configuration file The following command line will give you a bash shell inside your mysql container: $ docker exec -it some-mysql bash The docker exec command allows you to run commands inside a Docker container. Container shell access and viewing MySQL logs Run docker stack deploy -c stack.yml mysql (or docker-compose -f stack.yml up), wait for it to initialize completely, and visit or (as appropriate). via docker stack deploy or docker-composeĮxample stack.yml for mysql: # Use root/example as user/password credentialsĬommand: -default-authentication-plugin=mysql_native_password More information about the MySQL command line client can be found in the MySQL documentation. This image can also be used as a client for non-Docker or remote instances: $ docker run -it -rm mysql mysql -usome-mysql-user -p where some-mysql is the name of your original mysql container (connected to the some-network Docker network). The following command starts another mysql container instance and runs the mysql command line client against your original mysql container, allowing you to execute SQL statements against your database instance: $ docker run -it -network some-network -rm mysql mysql -hsome-mysql -uexample-user -p Connect to MySQL from the MySQL command line client where some-mysql is the name you want to assign to your container, my-secret-pw is the password to be set for the MySQL root user and tag is the tag specifying the MySQL version you want. Starting a MySQL instance is simple: $ docker run -name some-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:tag With its proven performance, reliability and ease-of-use, MySQL has become the leading database choice for web-based applications, covering the entire range from personal projects and websites, via e-commerce and information services, all the way to high profile web properties including Facebook, Twitter, YouTube, Yahoo! and many more.įor more information and related downloads for MySQL Server and other MySQL products, please visit How to use this image Start a mysql server instance MySQL is the world's most popular open source database. Official-images repo's library/mysql file ( history) Official-images PRs with label library/mysql Repo-info repo's repos/mysql/ directory ( history) Supported tags and respective Dockerfile links The Docker Community Forums, the Docker Community Slack, or Stack Overflow
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