Flask: add Prometheus endpoint #983
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Merge conflict due to #974 resolved |
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This is to help gain insights for #950.
Leverage prometheus-flask-exporter, a high-level client atop Prometheus' Python client designed for Flask and Gunicorn.
Use
/tmpfor the multiprocess directory to temporarily write metrics for the manager process, which is always writable and reset when the container is recreated, as required.Add alternate gunicorn configuration for testing this metrics setup without going straight into production.
Integrate entrypoints into Dockerfile, now that stager-dev is no longer needed.
Disable pip cache when building images to reduce image size.