Can I use mem_limit in docker-compose? and How?

docker fig
Montells picture Montells · Mar 3, 2015 · Viewed 69.7k times · Source

mem_limit is supported by docker-compose? How can I test it?

I have a following docker-compose.yml

repository:
  image: myregistry/my_nginx_image
  mem_limit: 60m
  volumes:
    - /etc/localtime:/etc/localtime
  ports:
    - "80:80"

How can I prove that the container actually does not exceed 60 mb of RAM?

I am using:

  • docker 1.3.1
  • docker-compose 1.1.0

Answer

jozala picture jozala · Apr 2, 2015

Yes. Memory limitation is supported by docker-compose and value can be set as in your example with "m" for megabytes.

It is possible to check what is the memory limit set for running Docker container using "docker stats" command.

If your container name is "repository_1" then use this command:

docker stats repository_1

The result of this will be simillar to this one:

CONTAINER       CPU %    MEM USAGE/LIMIT    MEM %     NET I/O
repository_1    1.93%    4.609 MiB/60 MiB   7.20%     1.832 KiB/648 B

Related questions

Can't install pip packages inside a docker container with Ubuntu

I'm following the fig guide to using docker with a python application, but when docker gets up to the command RUN pip install -r requirements.txt I get the following error message: Step 3 : RUN pip install -r requirements.txt ---&…

Read More
How to get into psql of a running postgres container?

I created a postgres container using the tutorial on the fig website. I named the container db. The container is running and my app connects to it fine. I tried to run the command fig run db psql with the …

Read More
docker-compose: using multiple Dockerfiles for multiple services

I'm using docker-compose and I'd like to use different Dockerfiles for different services' build steps. The docs seem to suggest to place different Dockerfiles in different directories, but I'd like them all to be in the same one (and perhaps …

Read More