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It is believed that many inexperienced people have no idea about how to install docker on Linux virtual machine and install mysql with docker. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

1. Preface

Now that more and more people are using docker to install programs on the Linux virtual machine, this time record the process of installing docker on the virtual machine.

2. Introduction to docker

Docker is an open source application container engine.

Docker supports compiling software into an image, and then various software is configured in the image to publish the image, which can be directly used by other users.

The running image becomes a container.

3. The core concepts of docker

① docker host (Host): a machine with the Docker program installed

② docker client (Client): connects to a docker host for operation

③ docker repository (Registry): used to hold various packaged software images

④ docker image (Images): the image is packaged by the software; put in the docker repository

⑤ docker container (Container): the instance after the image is started is called a container; the container is one or a group of applications that run independently.

4. Install docker on the Linux virtual machine

① first check the kernel version of the centos system (docker requires a version greater than 3.10)

Uname-r

② if the kernel version is less than 3.10, you need to upgrade the package and kernel

(choose to do it, but I suggest you upgrade it. The version is up to the standard at the first installation, but the docker service cannot be turned on. After upgrading the kernel version, it will be ok.)

Yum update

The status of y will be entered several times in the middle. When you see complet, the upgrade is complete.

③ install docker

Yum install docker

④ starts docker

Systemctl start docker

⑤ sets the docker service to boot

Systemctl enable docker

⑥ stop docker

Systemctl stop docker

5. Docker related operations

(1) Image operation (take installing mysql as an example)

① query mysql image

Docker search mysql

② downloads mysql image

Docker pull mysql:5.5

③ to view downloaded images

Docker images

④ deletes the specified image

Docker rmi image-id

(2) Container operation (take installing tomcat as an example)

① docker search tomcat

② docker pull docker.io/tomcat

③ starts the container based on the image

Docker run-- name mytomcat-d tomcat:latest

④ to view running containers

Docker ps

Container where ⑤ stops running

Docker stop CONTAINER-ID

⑥ looks at all containers, including running, stopped

Docker ps-a

⑦ startup container

Docker start CONTAINER-ID

⑧ delete container

Docker rm CONTAINER-ID

⑨ starts tomcat and makes port mapping

Docker run-name mytomcat-d-p 8888purl 8080 tomcat

-d: running in the background

-p: map the port of the host to a port of the container: the port inside the container

⑩ View Firewall status

Service firewalld status

Turn off the firewall

Service firewalld stop

⑩ view container log

Docker logs CONTAINER-ID

(3) start the MySQL container

Docker run-p 3306 MYSQL_ROOT_PASSWORD=123456 3306-- name mysql01-e MYSQL_ROOT_PASSWORD=123456-d mysql

After reading the above, have you mastered how to install docker on the Linux virtual machine and install mysql using docker? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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