docker-node-kubernetes.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: docker-nodejs-demo
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      todo: web
  template:
    metadata:
      labels:
        todo: web
    spec:
      containers:
      - name: todo-site
        image: bugradursun/dockerization
        imagePullPolicy: Always
---
apiVersion: v1
kind: Service
metadata:
  name: todo-entrypoint
  namespace: default
spec:
  type: NodePort
  selector:
    todo: web
  ports:
  - port: 3000
    targetPort: 3000
    nodePort: 30001

#This YAML file defines two object Deployment and Service to be ran in the Kubernetes for Docker container. Kubernetes scales and distributes docker containers.
#There are two objects seperated by the --
# DEPLOYMENT:Deployment named docker-nodejs-demo, this creates replicates using pod scheme.  
# Service: Nodeport type service called todo-entrypoint. (Service podları dış dünyaya açar ve onlara erişim sağlar).