Install mysql using docker

1. View the name of the mysql image to download on docker hub:

The docker hub image repository is for us to develop
Open the docker hub website
dockerHub official website address
Enter mysql in the search bar above

Take the image version, find the version under the tag

BackGo to the virtual machine interface and execute the following command to pull the mysql image
Do not specify the version number, download the latest version by default:

sudo docker pull mysql

Specify version number:

sudo docker pull mysql:5.7

2. After the image is pulled, use the image to create a mysql instance, and use the following command to create

 sudo docker run-p 3306:3306 --name mysql-v /mydata/mysql/log:/var/log/mysql-v /mydata/mysql/data:/var/lib/mysql-v /mydata/mysql/conf:/etc/mysql-e MYSQL_ROOT_PASSWORD=root-d mysql:5.7

Here is a brief introduction to the above parameters. If you don't want to understand this piece, just copy the above command and execute it:
Configure port mapping:
-p 3306:3306--name mysql
Map port 3306 of the container to port 3306 of the host
Configure mysql data volume mount
1.-v /mydata/mysql/log:/var/log/mysql (log file mount)
Mount the log folder in the container to the /var/log/mysql folder corresponding to the host
2.-v /mydata/mysql/data:/var/lib/mysql (data file mount)
Mount the data folder in the container to the /var/lib/mysql folder corresponding to the host
3.-v /mydata/mysql/conf:/etc/mysql (configuration file mount)
Mount the configuration folder of the container to the /etc/mysql folder corresponding to the host
Note (the host mentioned here refers to the current linux host)
Configure user
-e MYSQL_ROOT_PASSWORD=root
Set the password of the initial root user
Specify the mirror resource
-d mysql:5.7
-d: run the instance in the background
mysql:5.7: specify this image to create a running instance

The following demonstration is to execute the command with the root user. If the current user is not the root user, add sudo before the command and run as an administrator
After successful creation, use the following command to view the created mysql instance:

docker ps -a

Use navicat to test whether the database is started successfully:
Username and password were set to root when docker was created just now

Click the test connection, it shows that the test is successful, indicating that the mysql instance of docker has been started normally

Finally, a small expansion, my previous blog taught you how to use vagrant to create a Linux virtual machine, if you don’t understand, you can refer to my other blog
Ultra-detailed window10 system quickly builds a Linux mirroring environment
When docker is just installed, we have to add it when executing various commandssudo, run as an administrator, which is more troublesome, we can switch to the root user when deploying the application in the docker environment:

su root

The following will pop up to enter the password:
You can enter the root user password when creating the virtual machine. If it is a virtual machine created with vagrant, the root user password is vagrant

After execution, we enter the following command to view the current user:

whoami

You can find that the user at this time has switched to root, you don't need to add sudo when executing the command again.

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