Register a Consul Service with a TTL Health Check and Verify DNS Visibility
Use the Consul agent HTTP API to register a service with a TTL health check, verify catalog and DNS visibility, and recover from critical checks or deregistration.
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consulChoosing Consul Health Checks for Ephemeral Services: A Decision Guide
Ephemeral services behind NAT need discovery that fails fast without flapping. This guide compares Consul's pull-based HTTP/TCP checks and push-based TTL checks, then shows how to validate that only healthy instances answer DNS and HTTP queries.