Control Plane Debug Battlecards
Recall diagnostic moves for unreachable routes, empty subsets, stale proxy config, and analyzer warnings.
Analyzer warning The YAML applied, so the unreachable route warning is probably harmless. A review has a VirtualService analyzer warning. Your line Apply only proves syntax and admission. The warning says our intended route may never run, so we need to fix or explicitly justify it. The trap is treating API acceptance as runtime intent. It separates Kubernetes acceptance from mesh behavior. Empty subset What is the first check for a subset 503? Match the VirtualService subset name to the DestinationRule subset selector and ready pod labels. A healthy pod with the wrong label is invisible to the subset. Compare…
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