Kubernetes networking

https://kubernetes.io/docs/concepts/cluster-administration/networking/

The Container Network Interface (CNI) plugin is selected by passing kubelet the --network-plugin=cni

• Calico
• flannel

Activities

• Create a pod network: kubeadm init --pod-network-cidr=10.244.0.0/16
• CKA v1.23: Understand host networking configuration on the cluster nodes
• Understand connectivity between Pods (CKA v1.23, CKA v1.24, CKA v1.25)
• CKA: Troubleshoot networking
• Know how to configure and use CoreDNS (CKA v1.23, CKA v1.24, CKA v1.25)

Related terms

• Container Network Interface (CNI)
• CoreDNS
• kube-proxy
• vpc-cni
• kubectl port-forward
• kind: NetworkPolicy
• Service mesh

See also

• Tigera: Calico, Typha, Canal, calicoctl, calico-kube-controllers, kind: BGPPeer
• Ingress controllers, NGINX Ingress Controller, minikube addons enable ingress, kubectl get ingress, kubectl get ingressclass, kubectl describe ingress, Ingress:, Ingress API, AWS Load Balancer Controller, Envoy Proxy, GKE Ingress, Kubernetes Gateway API, ingress.k8s.aws, ingresses.networking.k8s.io, kind: Ingress: ( tls:, hosts: ), SuccessfullyReconciled
• Kubernetes networking: network policies, Network Policy Providers, CNI, Calico, flannel, Service mesh, Istio, kube-proxy, coredns, AWS VPC CNI: vpc-cni, Kubernetes: Ingress controllers, IPVS, ServiceTypes: LoadBalancer, ClusterIP, NodePort, ExternalName, Endpoints, EndpointSlices, Kubernetes DNS, svc.cluster.local, Weave Net