CoreDNS

wikipedia:CoreDNS (2019) DNS and Service discovery

• https://coredns.io/

kubectl -n kube-system -l=k8s-app=kube-dns get pods
NAME                      READY   STATUS    RESTARTS   AGE
coredns-f47955f89-7ntw4   0/1     Pending   0          3h37m
coredns-f47955f89-sl79r   0/1     Pending   0          3h37m

Protocols

• dns:// for plain DNS (the default if no scheme is specified).
• tls:// for DNS over TLS, see RFC 7858.
• https:// for DNS over HTTPS, see RFC 8484.
• grpc:// for DNS over gRPC

Versions

• 2022-01-24 1.8.7 https://coredns.io/2021/12/09/coredns-1.8.7-release/

• 2020/06/15 1.7.0 https://coredns.io/2020/06/15/coredns-1.7.0-release/

Related terms

• DNS
• kube-system namespace
• Kubernetes 1.13 (December 2018)
• kubeadm config images pull
• Miek Gieben
• kube-dns
• EKS: kubectl get service kube-dns -n kube-system
• kubectl cluster-info
• CKA 1.23: Know how to configure and use CoreDNS
• dnsPolicy:
• forward
• EKS add-ons
• kubectl get serviceaccounts

Activities

• https://aws.amazon.com/premiumsupport/knowledge-center/eks-dns-failure/

See also

• CoreDNS, kube-dns, Know how to configure and use CoreDNS, Corefile
• Kubernetes: distributions, tools, CKA, CKS, Kubernetes interfaces: CSI, CNI, installation, workloads, networking, kubeadm, Kubernetes API, Kubernetes API Server, kubectl, kubeadm, kubelet, kube-proxy, Cloud services: EKS, GKE, TKE, DKS, Helm, Kubernetes RBAC, Kubernetes deployments, Minikube, Rancher, OpenShift, Charmed Kubernetes, Ingress, Kubernetes scheduler, Kubernetes Finalizers, logging, Kubernetes operator, Orka, kind:, Kubernetes namespaces, Kubernetes dashboard, Kubernetes Metrics Server, Field Selectors, CoreDNS, CRI, Kubernetes Topology Manager, Kubernetes governance: (SIG, KEP), Kustomize, controllers, ReadinessProbe, LivenessProbe, KOPS, K9s, Kui, k3s, ImagePullBackOff, PDB, EndPoints, Kots, metadata, Karpenter, Replicated.com, Kubernetes Authenticating, Kubernetes timeline, Changelog/Versions, service accounts, Kubernetes Pod Lifecycle, Kubernetes Conformance Certified, Kubernetes backup, Kubernetes Pod Security Admission, tEKS, Kubernetes events, Kubernetes ports, Kubernetes policies, Connect, addons, DoKC, Kubernetes control plane, Kubernetes Federation, Kubernetes info, Kubetest2, Sidecar (Kubernetes)

https://coredns.io/