Shulou(Shulou.com)06/03 Report--

Docker installation

CentOS 7 yum install docker

two。 Common command operation commands describe running docker run-- name container-name-d image-name:tag such as: docker run-- name myredis-d redis--name: custom container name-d: indicates that the background is running image-name: specify the name of the running image tag: list of versions of the image docker ps (view the running container); add-a You can view all containers stop docker stop container-name/container-id to stop the current operation of the specified container start docker start container-name/container-id start container delete docker rm container-id delete specified container port mapping-p 6379docker rm container-id 6379 such as: docker run-- name myredis-d-p 6379docker rm container-id docker rm container-id 6379: host port is mapped to the port inside the container docker logs container-name/container-id-tomcat installation tomcat runs

Docker run-it-- rm-p 8888 purl 8080-v $PWD/webapps:/usr/local/tomcat/webapps tomcat:latest

-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, I use-it for screenshot output, or-d, and then use the "docker logs container name" command to output the log.

-- rm # automatically deletes a container when it is stopped

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

-v # Map the usr/local/tomcat/webapps directory in tomcat to the webapps directory of the current host directory, and then update the jar package and throw it directly into the mapped host directory.

Tomcat:latest # Image name: tag tag

Backup and migration

The container is saved as a mirror

Docker commit pyg_nginx mynginx

Pyg_nginx is the container name

Mynginx is the new image name

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