The installation

Follow its instructions without thinking about the next step

Download address:

Docs.docker.com/desktop/win…

After the installation is complete, it will have a novice boot, just follow the above command to run, about 4 steps after completion, Docker has been installed.

You can view the docker information by viewing the version number

docker -v

You can then use docker commands in power shell to manipulate docker

Such as:

configuration

In the source

Use a domestic source instead of the default docker source

    "https://hub-mirror.c.163.com",
    "https://ustc-edu-cn.mirror.aliyuncs.com",
    "https://ghcr.io",
    "https://mirror.baidubce.com"
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test

Pull the Nginx image

docker pull nginx:latest
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Port mapping + Create and start Nginx

docker run --name my-nginx -p 80:80 -d nginx
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–name my-nginx Specifies the container name

-p 80:80 Indicates the mapping port

-d The daemon process is running

Nginx image version, you can also specify the version, such as: nginx:1.18.0

If you simply want to start a test nginx, the test results are as follows

Stop + delete nginx

Stop means stop, and the trash can icon on the right means delete

Command line delete:

Docker Network Connection (real pit)

The connection container bug is mostly due to this pit

Docker for Win10 Docker is actually running on a newly built WSL2 host. How do YOU communicate with Windows at this point?

There are three IP addresses:

  • IP address of the Docker container
  • Linux host IP
  • Local Windows IP

Which IP address can I access the application inside the container?

Use the common test container Nginx

Test results:

You can see that using localhost, you can access it. This is an optimization of WSL2

At the same time, many images do not even have Net-Tools installed and cannot view IP directly. By default, the container hides the IP from the outside

If the container hides the IP from the outside by default, then the way to connect to the container is completely through the DOCker host IP+ port forwarding (access the designated port on the host, and then the host port helps jump to the container port).

Docker for Windows Desktop edition is a special way to install Docker for Windows. Docker host IP is set to be the same as the local Windows IP. In the WSL2 direct installation mode, the two are different IP addresses, but under the same WSL subnet.

Ping the IP address and port number of the container

Docker for Windows has been using the container port +3306 to connect to the database. Or Windows Firewall policy.

Heretical Forwarding test (install docker, run this test) :

View disabled ports

netsh interface ipv4 show excludedportrange protocol=tcp
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Select 9999 as the test port number to test:

View port forwarding:

Docker MySQL installation + configuration + connection

Configuring the run container

To view forbidden ports:

netsh interface ipv4 show excludedportrange protocol=tcp
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Select 6666 as the local port number

To start the MySQL container, specify the initial password and port mapping

The password is set to root

Docker run --name MYSQL -e MYSQL_ROOT_PASSWORD=root -p 6666:3306 -itd MYSQL :5.7 /bin/bashCopy the code

Connect to container

Log in to MySQL in the container

MySQL > alter character set;

Go into the container and modify the my.cnf file

Look for the my.cnf file

mysql --help | grep my.cnf
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Modify the /etc/mysql.my.cnf file

Pitfall: No Nano or VI

Without vi and nano, how to change file + change source?

Use manual Echo to add the source and then install the Nano

  • Backup source

    cp /etc/apt/sources.list /etc/apt/sources.list.bak
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  • Delete the original sources.list

    rm -rf /etc/apt/sources.list
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  • Manually echo to add a source

    Echo source > sources. The list

    echo deb http://mirrors.aliyun.com/debian/ buster main non-free contrib deb-src http://mirrors.aliyun.com/debian/ buster  main non-free contrib deb http://mirrors.aliyun.com/debian-security buster/updates main deb-src http://mirrors.aliyun.com/debian-security buster/updates main deb http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib deb-src http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib deb http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib deb-src http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib > sources.listCopy the code

  • update

    apt update
apt upgrade
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  • Install the nano

    apt install nano
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Began to change

nano /etc/mysql/my.cnf
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The character set parameter to add

[mysqld]
character-set-server=utf8mb4
[client]
default-character-set=utf8mb4
[mysql]
default-character-set=utf8mb4
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Enter mysql to query the character set

show variables like '%character%';
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Restart the MySQL container to query the character set

Configure MySQL to allow remote login

Choose mysql database

use mysql;
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View user table

SELECT `Host`,`User` FROM user;
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If it is not %, use the modify command

UPDATE user SET `Host` = '%' WHERE `User` = 'root' LIMIT 1;
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Local Windows connects to the MySQL container

Set IP to localhost and port number to the local forwarding port selected when creating a container

The connection is successful

reference

Blog. Lupf. Cn/articles / 20…

Blog.csdn.net/weixin_4585…

zhuanlan.zhihu.com/p/365632905

www.cnblogs.com/sablier/p/1…

zhuanlan.zhihu.com/p/372062996

zhuanlan.zhihu.com/p/266534015

zhuanlan.zhihu.com/p/143857664