DNS-Based Discovery - CI/CD Glossary Definition
DNS-based discovery maps a service name to its live endpoints through DNS, so clients connect by name.
DNS-based discovery is service discovery implemented through DNS, where a service name resolves to the current set of backing endpoints, letting clients connect without knowing individual IPs.
In Kubernetes, in-cluster DNS resolves service names to virtual IPs. When a deploy replaces pods, DNS keeps callers pointed at the right service.
Cluster DNS
A name like payments.default.svc.cluster.local resolves to a stable service IP; broken cluster DNS is a frequent cause of intermittent connection failures after a deploy.
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