ashb commented on issue #14656: URL: https://github.com/apache/airflow/issues/14656#issuecomment-796661760
Rough steps we will need to do to have two "pools" of runners: 1. Get ASF infra to adjust the labels on the existing runners we have configured. Currently they just have `self-hosted` label -- we should ask them to set all 100 to additionally have a `large` label or something 1. Update https://github.com/apache/airflow-ci-infra/blob/master/scripts/runner-supervisor.py to pull credentials from a different path in AWS SSM. Right now it looks for creds in `/runners/apache/airflow` -- i.e. `/runners/apache/airflow/1`...`/runners/apache/airflow/100` We would probably have to change that to look at `/runners/apache/airflow/{size}/{idx}` 1. Open a ticket with Infra, and ask them to create a new runner registration token. Use that token and the https://github.com/apache/airflow-ci-infra/blob/master/scripts/store-agent-creds.py script to store those creds in SSM. Script will need updating to change/add labels and store in a different location too. 1. Create a second ASG with smaller instances, also configuring/changing the userdata so the instance starts in the right "pool". 1. The Lambda function will need updating to know which ASG to scale at based on the job name. I _think_ we might have to just duplicate the job ids and sizes in to the runner, as we don't get much info in the webhook payload (I've included a sample one below in the details block) There may be a better approach here. 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