Question
How to check the disk usage of all running Docker containers?
- Posted March 23, 2020
- DockerLinux CommandsLinux Basics
With the docker system df command you would get a summary of your Docker usage including things like:
- The total size of all images
- The total size of all containers
- The local volumes size
- And the cache
However, here’s how to check the size of each running container
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By default, if you run docker images you will get the size of each image. However, if you run docker ps you would not get the size of the running containers.
To check the size of each running container what you could do is just use the --size argument of docker ps command.
- docker ps --size
You would get the following output:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES SIZE
d64a8112d00a nginx "nginx -g 'daemon of…" About an hour ago Up About an hour 0.0.0.0:80->80/tcp nginx 12MB (virtual 127MB)
ab81be326c31 eboraas/laravel "/usr/sbin/apache2ct…" 2 hours ago Up 2 hours 80/tcp, 443/tcp laravel 92MB (virtual 509MB)
That way you will be able to quickly tell which container exactly is consuming the most disk space.
In case that you need to clear some space, I would recommend checking out this tutorial here on how to remove Docker Images, Containers and Volumes:
https://www.digitalocean.com/community/tutorials/how-to-remove-docker-images-containers-and-volumes
Hope that this helps!
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The “docker system df” command displays the summary of the amount of disk space used by the docker daemon and “docker system df –v” gives the detailed view.
But we can only get the total file size of each container by using the given command;
We will be getting the following input:
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