https://kukie.tech/tags/coredns/Recent content in Coredns on HistoryHugoko-krWed, 28 Oct 2026 09:00:00 +0900https://kukie.tech/posts/network-k8s-04-2/Wed, 28 Oct 2026 09:00:00 +0900https://kukie.tech/posts/network-k8s-04-2/How a Pod reaches a Pod that keeps changing — a three-node kind lab with Cilium as a plain CNI, how a Service’s virtual IP is rewritten to a real Pod IP by node rules at PREROUTING and OUTPUT, why the iptables chain says 1/4·1/3·1/2 and spreads connections rather than requests, how db becomes db.cn4.svc.cluster.local and what CoreDNS does with it, where search and ndots multiply queries, and what dual-stack actually changes in Pod, Service and EndpointSlice fields.