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Istio sidecar mem PrometheusRule Alert Template Addition

Ryan Garcia requested to merge istio-sidecar-mem-alerts into main

Adding PrometheusRule template to chart/templates/bigbang which conditionally create an monitoring-istio-sidecar-heap-memory alert group with two alerts:

  • Warning at 50MB heap memory usage for sidecar pod
  • Critical alert at 100MB of memory usage for sidecar pod

went with heap portion since that is what is actively requested on the system and pod rather than what is in use, and was generally a few MBs lower.

Relates https://repo1.dso.mil/platform-one/big-bang/apps/core/istio-controlplane/-/issues/6

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