Shulou(Shulou.com)06/01 Report--

How do I MySQL8 in a Docker installation? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

1. Download image

Docker Hub official website URL: https://hub.docker.com/_/mysql/

2. Start the image

The copy code is as follows:

Docker run-d-- name mysql-v / data/datadir:/var/lib/mysql-v / etc/mysql/my.cnf:/etc/mysql/my.cnf-p 3306 data/datadir:/var/lib/mysql-e MYSQL_ROOT_PASSWORD=123456 mysql:tag

There is no / data/datadir path or / etc/mysql/my.cnf configuration file. Default can be used without mounting.

III. User authorization

1. Log in to the launched MySQL container

Docker exec-it mysql / bin/sh

2. Log in to MySQL using the password set by-e MYSQL_ROOT_PASSWORD in the startup command

Mysql-uroot-p

3. Execute the authorization command. Here the root user is taken as an example.

Create user root@'192.168.0.2' identified by '123456 grant all privileges on databas_name.* to root@'192.168.0.2';ALTER USER' root'@'192.168.0.2' IDENTIFIED WITH mysql_native_password BY '123456'

4. Log in to MySQL

Mysql-h 192.168.0.2-u root-p

4. start the environment variables in the command

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. Note that if you start the container with a data directory that already contains the database, any of the following variables have no effect: any pre-existing database remains the same when the container starts.

Also refer to https://dev.mysql.com/doc/refman/5.7/en/environment-variables.html for documentation of the environment variables that MySQL itself adheres to (especially variables like MYSQL_HOST, which can cause problems when used with this image).

MYSQL_ROOT_PASSWORD

This variable is mandatory and specifies the password that will be set for the MySQL root superuser account. In the above example, it is set to my-secret-pw.

MYSQL_DATABASE

This variable is optional and allows you to specify the name of the database to be created when the image starts. If a user / password is provided (see below), the user will be granted superuser access to the database (corresponding to GRANT ALL).

MYSQL_USER, MYSQL_PASSWORD

These variables are optional and can be used to create a new user and set the user's password. The user will be granted the superuser privilege (see above), which is specified by the MYSQL_DATABASE variable. Both variables are necessary to create a user.

Note that you do not need to use this mechanism to create a superuser's root user, which is created by default with the password specified by the MYSQL_ROOT_PASSWORD variable.

MYSQL_ALLOW_EMPTY_PASSWORD

This is an optional variable. Set to yes to allow the container to start with the empty password of the root user. Note: yes do not set this variable to "not recommended" unless you really know what you are doing, as this will leave your MySQL instance completely unprotected, allowing anyone to gain full root access.

MYSQL_RANDOM_ROOT_PASSWORD

This is an optional variable. Set yes to generate a random initial password for the root user (using pwgen). The generated root password will be printed to stdout (GENERATED ROOT PASSWORD:.).

MYSQL_ONETIME_PASSWORD

Once initialization is complete, the root user (not the user MYSQL_USER specified by the user) is set to expire, forcing the password to change when logging in for the first time. Note: this feature is only supported on MySQL 5.6 +. Using this option on MySQL 5.5 will raise the appropriate error during initialization.

This is the answer to the question about how to MySQL8 in the Docker installation. I hope the above content can be of some help to you. If you still have a lot of doubts to solve, you can follow the industry information channel to learn more about it.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.