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Linux how to deploy docker, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

Install docker and run

Docker search tomcat

Docker pull tomcat8

Docker run-it-p 8084 PWD:/usr/local/tomcat/webapps 8080-v $8080-name wu_tomcat6 tomcat

-it # is the abbreviation of-I and-t, which means to run the container in an interactive way, plus-d means to run in the background. Here, in order to capture the output of the startup log, I use-it, or-d, and then use the "docker logs container name" command to output the log-- rm # automatically delete the container when the container is stopped

-p 8084 tomcat 8080 # 80 is the port set for the container, which means that 80 is mapped to host port 8888. If only-p 80 container is written, it will randomly take the larger port number in the value 32768 to 61000 to map to port 80.

-v # Map the usr/local/tomcat/webapps directory in tomcat to the current host directory, and then update the jar package host directory

Tomcat # Image name: tag tag

A little order, there's too much process.

1. Host: the main server, the server where docker is installed

Usually, when a docker container is running, the container reads files in the container's own small world. How to take the host directory, you need to map:

-v command

Mount command: under a certain image, mount the host to a directory in the container.

Docker run-it-v $PWD:/usr/local/tomcat/webapps image name / bin/bash

Enter Container command

Docker exec-it container name / bin/bash

Remember, if the container stops, it can't get into the container.

But for example, the tomcat container cannot be started because of an error in the configuration file, so how do you modify it?

Someone is smart enough to copy the files in the container to the host, repair the configuration files, and overwrite the files in the container. The commands involved are

Docker cp wu_tomcat6:/usr/local/tomcat / usr/local/temp

As above: cp container name: container file directory, host directory

1. Create and run a container

Docker run-it-- rm centos:latest bash

Run running Container

-it runs the container interactively

-- delete the container after rm exits the container

Centos:latest starts the container based on the image

Bash Command Interactive shell

two。 Exit the container

Exit

3. View the container

Docker ps view the container that is running

Docker ps-a view all containers

4. Delete Container

Docker rm [Container id]

6. Enter the container

Docker exec-it [Container id] bash enters the container interactively (opens a new console operation)

7 . Start stop restart the container

Dcoker start [container id/ container name]

Dcoker stop [container id/ container name]

Dcoker restart [container id/ container name]

8. Delete Container

Docker container rm

Clean up all terminated containers

Docker container prune

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