Question 80957 in Docker Question posted in
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Set Docker resource limits via gitlab CICD as variables

I’m trying to set some resource limits into a docker container. I’m able to add the below values to a docker-compose.yml file for docker resource limits;

      resources:
        limits:
          cpus: '2'
          memory: 4GB
        reservations:
          cpus: '1'
          memory: 4GB

How would I pass them in via gitlab pipeline for the container being built but set them as variables?

I was able to override the java heap size by adding;

java_xmx=${JAVA_XMX_OVERRIDE}

and the value

JAVA_XMX_OVERRIDE: "-Xmx2048m"

How would I do the same with resource limits?

Thanks

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2

Answers


  1. Chosen as BEST ANSWER
    0

    I've ended up adding a docker-compose file template in the pipeline, in the template I modified the resource limits with ansible

    - name: Compose Docker | Get text block for service   set_fact:
      service_content: "{{ lookup('template', 'templates/docker-compose-service.yml.j2') }}"   tags:
    - compose_docker

  2. 0

    You can use variables in docker compose which you can propagate with the starting command.

    compose.yaml:

    version: '3.9'

services:
  httpd:
    container_name: httpd-test
    image: httpd
    deploy:
      resources:
        limits:
          memory: ${MEMORY}

    Start container:

    $ MEMORY=60M docker-compose up -d
$ docker stats
CONTAINER ID   NAME              CPU %     MEM USAGE / LIMIT     MEM %     NET I/O           BLOCK I/O     PIDS
ace0d6d638e1   httpd-test        0.00%     26.86MiB / 60MiB      44.77%    4.3kB / 0B        0B / 0B       82

    You should be able to define an environment variable in your gitlab pipeline:

    variables:
  MEMORY: 60M
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