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.
Ryan Garcia authored