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CoreDNS in Kubernetes: The Heart of Cluster Service Discovery

CoreDNS in Kubernetes: The Heart of Cluster Service Discovery

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Christopher Adamson
May 31, 2025
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Pods & Pixels
Pods & Pixels
CoreDNS in Kubernetes: The Heart of Cluster Service Discovery
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CoreDNS is the default DNS server for Kubernetes clusters, responsible for resolving service names and pod hostnames into IP addresses within the cluster network. It’s a flexible, extensible DNS server written in Go, designed to integrate seamlessly with Kubernetes via a ConfigMap-driven “Corefile” configuration.

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