6-banking-deploy.yaml

apiVersion: apps/v1 #version we are using
kind: Deployment # kind describe what purpose we are using this yaml file
metadata: # It helps to identify the object 
  name: banking-app # Identifier for this file
  labels: # used to specify api
    app: banking-app
spec: # specifications
  replicas: 1  # define how many pods are created
  selector: #selects all the pods with same key value pair 
    matchLabels: # it helps to match with the labels
      app: banking-app
  template:  # this need to be applied for all the pods we have created
    metadata:
      labels: 
        app: banking-app
    spec: 
      containers: # containers we have used
        - name: banking-app # name
          image: devanshuz/app1 # image which we got from docker hub
          ports: # ports that are used to provide output
            - containerPort: 8080           
          env:  # these are the variables we got from the image
            - name: DB_HOST
              value: "bankmysql"   # database we have choosen         
            - name: DB_PORT # port number specified for mysql
              value: "3306"            
            - name: DB_NAME
              value: "onlinebanking" #name for the database           
            - name: DB_USER  
              value: "root"         #username for database    
            - name: DB_PASS
              value: "root" # password to enter database