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prow_setup.md

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Prow setup

Prow is a collection of microservices that are deployed on a Kubernetes cluster. All the Kubernetes object .yaml files (except secrets) for Knative prow are under oss-test-infra repo, and managed by oss oncall.

Expanding Boskos pool

We use GKE to run integration tests for Knative projects. To create a GKE cluster, a GCP project is needed. boskos is the resource manager service we use to manage a pool of GCP projects and handle the transition between different states for these projects.

  1. All projects and permissions can be created by running ./prow/build-cluster/create_boskos_projects.sh. For example, to create 10 extra projects run ./prow/build-cluster/create_boskos_projects 10 0X0X0X-0X0X0X-0X0X0X. You will need to substitute the actual billing ID for the second argument. In the event the script fails, it should be easy to follow along with in the GUI or run on the CLI. Projects are created with a numeric, incremental prefix automatically, based on the contents of prow/build-cluster/boskos_resources.yaml, which is automatically updated.

  2. Increase the compute CPU quota for the project to 200. Go to https://console.cloud.google.com/iam-admin/quotas?service=compute.googleapis.com&metric=CPUs&project=PROJECT_NAME (replace PROJECT_NAME with the real project name) and click Edit Quota. Select at least five regions to increase the quota (us-central1, us-west1, us-east1, europe-west1, asia-east1). This needs to be done manually and should get automatically approved once the request is submitted. For the reason, enter Need more resources for running tests.

  3. Create a pull request with the changes. Once it's merged the configs will be automatically updated by a postsubmit job.