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• Distinguish between resources and actions. 
• Action metrics will record requests, errors, and latency similar to general network requests.
• Resource metrics will record creation, deletion, and possible modification.  
• Metrics will be labeled with project, composite-app, deployment intent group, etc.

For rsync specifically, measure health/reachability of target clusters.

Tracing

Istio provides some tracing support, but it appears rudimentary (no detailed spans for EMCO related operations).

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