Question

How to check the disk usage of all running Docker containers?

Posted on March 23, 2020
Docker Linux Basics Linux Commands
Asked by Bobby Iliev

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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Bobby Iliev

Site Moderator

• March 23, 2020

Accepted Answer

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!

uCrawler Public • August 7, 2022

Try this: https://github.com/amerkurev/doku/

Doku - Docker disk usage dashboard

nabeelanasar17 • December 11, 2020

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;

       ``` docker ps –s
              Or
          docker ps –-size ```

We will be getting the following input:

CONTAINER ID	IMAGE	COMMAND	CREATED	STATUS
6c34640e7468	nginx	“/docker-entrypoint.…”	12 seconds ago	Up 9 seconds
889f6fc3bbd4	httpd:2.4	“httpd-foreground”	2 minutes ago	Up 2 minutes

PORTS	NAMES	SIZE
80/tcp	blissful	1.12kB(virtual 133MB)
0.0.0.0:8080	test	2B (virtual 138MB)

Size - The amount of data (on disk) that is used by each container (write)
Virtual size -The amount of disk space used for the read-only image of each container.