Kubernetes Assignment – Vijay Kesoju

Features of Kubernetes:
Automated scheduling
Self healing capability
Storage orchestration
Automated rollbacks
Bin packing
Load balancing
Resource utilization
secret and config management

How kubernetes works?
Kubernetes clusters are comprised of one master node(control plane) and a number of worker nodes. These nodes can either be physical computers or virtual machines, depending on the cluster. The master node controls the state of the cluster; for example, which applications are running and their corresponding container images.

Components of Master Node:
API Server - front end of the kubernetes
Control store etcd - stores the cluster data
Controller manager - controls node, endpoint and pods
Controller scheduler - watches the pods and assigns to node

Components of Worker Node:
Kubelet - Instantiates POD.
Kube proxy - kube-proxy maintains network rules on nodes/ Iptables
Controller runtime /Docker engine - POD - container creation

Components of Workstation
Kubectl - CLI to interact with APIserver
JSON - instructions