Core components:

Pod, service, ingress, deployment, statefulset, volumes, configmap, secrets

Installation (Linux)

Minikube - Suitable for local setup that has one node containing master and workers in the same node, you can run this on top of docker runtime or using virtualbox(installation seperate).
- Starting minikube: minikube start --vm-driver=virtualbox
- Start with docker runtime: minikube start --vm-driver=none
Kubectl - command to control the whole k8s cluster. Acts like the main control panel for k8s

Setup a new deployment: kubectl apply -f ./app.yaml
- This sets up everything right from pot to container and also launch the cluster with settings mentioned in app.yaml
Create deployment from public docker image (eg, ngnix)
- kubectl create deployment mongdb-server --image=mongo (check the registry image name)
See all pods: kubectl get pods
Pod details (verbose): kubectl get pod -o wide
Checking logs: kubectl logs <pod-id>
Delete pod: kubectl delete pods <pod-id> --force
Pod details: kubectl describe pod <pod-id>
Service details: kubectl describe service <service-id>
Delete all pods (caution with force flag): kubectl delete all --all --all-namespaces --force
Check services: kubectl get services
Check deployment: kubectl get deployment
Check all nodes: kubectl get nodes
Editing kubectl deployment: kubectl edit deployment <deployment-name>
- upon editing, old pod gets deleted, new pod gets created. And a new replicaset also gets created
Just like in docker, it is possible to login to the shell of the pod
- kubectl exec -it <pod-id> -- bin/bash

Two types: deployment.yaml; service.yaml