I needed to deploy a healthcheck-enabled gRPC TLS-enabled service. Fortunately, most (all?) of the SDKs include an implementation, e.g. Golang has grpc-go/health. I learned in my travels that: DigitalOcean [App] platform does not (link) work with TLS-based gRPC apps. Fly has a regression (link) that breaks gRPC So, I resorted to Google Cloud Platform (GCP). Although Cloud Run would be well-suited to running the gRPC app, it uses a proxy|sidecar to provision a cert for the app and I wanted to be able to (easily use a custom domain) and give myself a somewhat general-purpose solution.

I’m using Firebase Authentication in a project to authenticate users of various OAuth2 identity systems. Firebase Authentication requires a set of Authorized Domains. The (web) app that interacts with Firebase Authentication is deployed to Cloud Run. The Authorized Domains list must include the app’s Cloud Run service URL. Cloud Run service URLs vary by Project (ID). They are a combination of the service name, a hash (?) of the Project (ID) and .

If you use jq, you’ll know that, its documentation uses examples that you can try locally or using the excellent jqplay: printf "[1,2,3]" | jq .[1:] [ 2, 3 ] And here If you use Google Cloud Platform (GCP) CLI, gcloud, this powerful tool includes JSON output formatting of results (--format=json) and YAML (--format=yaml) etc. and includes a set of so-called projections that you can use to format the returned data.