The AWS provisioner provisions EC2 spot
instances in response to queue length. It is identified with
aws-provisioner-v1 as the
provisionerId in a task definition. Its
administrative interface is available at
This interface allows monitoring of current load, as well as management of
The worker types provided by the AWS provisioner are a mix: some are Firefox-specific, while others are available for other Mozilla uses. Since the service runs with the TaskCluster team's AWS credentials, all costs are borne by the TaskCluster team.
If you are setting up a new worker type with a new AMI, it is your responsibility to ensure that a worker starts on the AMI when the AMI boots that this worker understand the task payload and shutdown when no more tasks are available from the queue,