Preview environments: Add extra external_labels to Prometheus #10668
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Description
Add extra external_labels for preview environments. External labels are labels that are added to all metrics when Prometheus performs remote-write to a Long Term Storage. More context on why we need them can be seen in the issue https://github.com/gitpod-io/ops/issues/2770
Related Issue(s)
Fixes https://github.com/gitpod-io/ops/issues/2771
How to test
werft run github -f -s .werft/jobs/build/deploy-to-preview-environment.ts -s .werft/observability/monitoring-satellite.ts
previewctl install-context
kubectl describe prometheus k8s
Release Notes