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Workers

Workers operate outside of the Taskcluster services, claiming tasks from the queue and executing them.

Taskcluster currently provides two worker implementations. Docker-worker runs tasks in Docker, and is written in JS. Generic-worker runs on several platforms, with several engines, and is written in Go.

Table of Contents

Docker image with generic worker

In order to simplify generic-worker installation, it is possible to build and use docker image to run generic-worker:

cd workers
docker build -t generic-worker:latest .

docker run --rm -it -v /path/to/config.json:/etc/generic-worker/config.json generic-worker:latest

This builds generic-worker for a given architecture, installs needed binaries, generates ed25519 key. On start shows sample config, if it wasn't mounted.

Minimal config.json looks like this:

{
  "accessToken": "--access-token--",
  "clientId": "--client-id--",
  "ed25519SigningKeyLocation": "/etc/generic-worker/ed25519_key",
  "rootURL": "https://tc-root.url/",
  "workerId": "worker-id",
  "workerType": "worker-type",
  "livelogExecutable": "/usr/local/bin/livelog",
  "taskclusterProxyExecutable": "/usr/local/bin/taskcluster-proxy",
  "publicIP": "127.1.2.3"
}

Access Token and Client Id can be created in https://tc-root.url/auth/clients/create.

This image is also used in a local docker compose development environment.