Nomad Runner

A custom gitlab runner for running gitlab runs on a nomad cluster

Usage

Using the docker image: ghcr.io/lol3rrr/nomad-runner:latest Example Nomad job found in examples/nomad-job.hcl

Configuration for the runner itself:

[[runners]]
  executor = "custom"
  builds_dir = "/alloc/builds"
  cache_dir = "/alloc/cache"
  [runners.custom]
    config_exec = "/bin/nomad-runner"
    config_args = [ "config" ]
    config_exec_timeout = 200

    prepare_exec = "/bin/nomad-runner"
    prepare_args = [ "prepare" ]
    prepare_exec_timeout = 200

    run_exec = "/bin/nomad-runner"
    run_args = [ "run" ]

    cleanup_exec = "/bin/nomad-runner"
    cleanup_args = [ "cleanup" ]
    cleanup_exec_timeout = 200

    graceful_kill_timeout = 200
    force_kill_timeout = 200

Architecture

To run a Gitlab Job, it starts a new Job with 2 Tasks consisting of one Management Task and one Job Task. The Job Task is used for running all the user specified Commands and the Management Task is used for running all the Management related commands, like cloning the repo, download/uploading the artifacts etc.