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:
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
×I used the following Docker command:
Question
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
Great! I tested with this tutorial and works very well!
Watching this outputs I note that containers have this names ¿?:
agitated_galileo
crazy_bohr
friendly_hermann
quirky_diffie
vigilant_gagarin
condescending_cannon
Why that names, where they come from?
P.D.: -maybe- I must open this in another question?
Hi @KS7000
That’s a good question!
Docker automatically generates a random name for each container.
You can, however, give memorable names to your containers using the new -name flag for docker run. For example:
docker run -d -name YOUR_CONTAINER_NAME youruser/mariadb
You can change the YOURCONTAINERNAME part with the name that you would like your container to have.
Hope that this helps!
Regards,
Bobby