Files
alexei.dolgolyov 0bd4549af0 docs: add gitea-runner.md — Act Runner worker capacity on TrueNAS
How to configure parallel job capacity for Gitea Act Runner:
the CONFIG_FILE env var requirement, custom config.yaml mount,
and capacity tuning.
2026-04-07 19:41:35 +03:00

1.4 KiB

Gitea Act Runner — Configuring Worker Capacity (TrueNAS)

Problem

The default Gitea Act Runner (gitea/act_runner) runs with capacity: 1, meaning only one job at a time. Setting GITEA_RUNNER_RUNNER__CAPACITY env var or placing a config.yaml in the app data directory does not work on its own.

Root Cause

The runner's entrypoint (run.sh) only passes --config to act_runner daemon when the CONFIG_FILE environment variable is explicitly set. Without it, the runner ignores any config file, even if it exists at /data/config.yaml.

Solution

  1. Create the config file in the app data directory (mounted as /data inside the container):

    # /mnt/system_pool/app_data/gitea-runner/config.yaml
    runner:
      capacity: 6
    
  2. Set the CONFIG_FILE environment variable in TrueNAS:

    Go to TrueNAS UI → Apps → Gitea Act Runner → Edit → Extra Environment Variables and add:

    CONFIG_FILE=/data/config.yaml
    
  3. Restart the app.

Verification

Check the runner logs after restart — concurrent jobs should now show maxParallel matching your capacity, and multiple tasks should run simultaneously.

Notes

  • capacity controls how many separate jobs the runner handles concurrently
  • maxParallel in logs refers to parallelism within a single job's matrix strategy, not the runner capacity
  • To generate a full default config for reference: act_runner generate-config