What is Kubernetes? Container-orchestration engine Why Kubernetes? Manage multi-node containers Manage microservices How Kubernetes works? Control plane api-server (Collection of k8s APIs) kube-controller-manager node-controller few other controllers as well scheduler (Allocate container to nodes) etcd (KV pair) (Brain of cluster) Worker Nodes kubelet (Manages node) kube-proxy (Runs on each worker node. Enables n/w communication b/w nodes) docker/rkt (Container runtime) Others DNS What is pod? Atomic unit of k8s Contain one or more containers Lives as long as there is at