fix(observability): add Docker healthchecks for Prometheus and APISIX, document cross-stack DNS naming#511
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…, document cross-stack DNS naming - Add healthcheck to APISIX gateway (port 9091, prometheus metrics endpoint) - Add healthcheck to Prometheus (port 9090, /-/ready endpoint) - Document cross-stack DNS convention in prometheus.yml header - Update README with cross-stack target naming note - Regenerate stacks (healthcheck blocks now in spanning output) Ref: #503
Fix yamllint line-length violations (119 > 80, 101 > 80 characters). Convert single-line flow-style arrays to block sequence format. Ref: #503
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Description
Completes observability improvements for
#503.Changes
/-/readyendpoint). Swarm can now detect unhealthy observability services and restart them.<stack>_<service>naming.Validation
docker compose configpasses for both modified compose files./stackctl.sh generate— all 3 stacks generated cleanly./stackctl.sh sync— no drift, all stacks in syncRef: #503