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Check docker version
docker version
View docker information
docker info
view help
docker --help
Service related commands
start up
systemctl start docker
View docker running status
systemctl status docker
stop
systemctl stop docker
reboot
systemctl restart docker
boot
systemctl enable docker
Docker image related commands
List local mirrors
List all local docker iamges
docker images
# You can view the command parameters through the following command
docker images --help
search mirror
#Search mirror
docker search redis
Mirror search address: https://hub.docker.com/
download mirror
#Download the latest (latest) version
docker pull 镜像名
#Download the specified version
docker pull 镜像名:镜像的版本号
delete mirror
Note that if the image has an instance running, it cannot be deleted
#Delete according to the image id, note that if the image id (id prefix) of the two images is the same, it cannot be deleted
docker rmi aa27923130e6
Delete according to image name: version
docker rmi redis:latest
Docker container instance related commands
A container is an instance of an image running. When the image is downloaded and run, it is a container instance.
View docker disk usage
Encountered once: clean up the logs on the disk, it still takes up a lot under the overlay. Stop this container, prune and solve it
docker system df
- docker system df is similar to the df command on Linux, used to view Docker's disk usage:
docker system pruneIt can be used to clean up disks, delete closed containers, useless data volumes and networks, and dangling images (that is, images without tags).docker system prune -aClean up more thoroughly, you can delete all containers that use Docker images. Note that these two commands will delete the temporarily closed container and the temporarily unused Docker image... so be sure to think clearly before using it. I haven't used it, because it will clean up the Docker that is not turned on
Export docker image images
Sometimes the docker container dies, fails to restart, and cannot see the logs. You need to take out this image and run it to see the specific situation.
● docker images export
docker save 98d8bb571885 > /root/rancher.tar
docker save 98d8bb571885 -o /root/rancher.tar
● docker images import
docker load -i /root/rancher.tar
docker file copy
● Copy the files in the container to the server directory
Files in the container: /usr/local/tomcat/webapps/test/js/test.js
Server directory: /opt
Container id or container name: podId
docker cp podId:/usr/local/tomcat/webapps/test/js/test.js /opt
● Copy the server files to the container
docker cp /opt/test.js testtomcat:/srr/local/tomcat/webapps/test/js