Question

How to display the resource usage statistics of a Docker container?

Recently I was asked to provide a list of the resource usage of all Docker containers which were running on a specific node. To get this information I had to do the following:


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Bobby Iliev
Site Moderator
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November 7, 2019
Accepted Answer

I used the following Docker command:

docker stats --all

You can change the --all with -a which would do the same.

This command would provide you to a nice live stream of very useful information like the CPU usage, the RAM usage, the NET I/O and more. The output would looke something like this:


CONTAINER ID        NAME                   CPU %               MEM USAGE / LIMIT     MEM %               NET I/O             BLOCK I/O           PIDS
b253d4071124        reverent_joliot        0.40%               1.703MiB / 3.853GiB   0.04%               688kB / 15.8MB      75MB / 0B           2
379cb50f3492        sharp_roentgen         0.00%               0B / 0B               0.00%               0B / 0B             0B / 0B             0

That way you could find out which container is using most of the resources on your server and possibly implement some resource limitations.

If you would like to check the resource usage for a specific container you could run:

docker stats CONTAINER_ID

If you would like to see only specific columns, you could use the --format argument:

docker stats --format "{{.Container}}: {{.CPUPerc}}"

This would return something like:

b253d4071124 0.40% 

Here is a quick video demo on how to do that as well:

For more information, I would suggest checking the official documentation here:

https://docs.docker.com/engine/reference/commandline/stats/

Hope that this helps! Regards, Bobby

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