hakaneroztekin

┏━━━━━━━━━━━━┓    ┏━━━━━━━━━━━━━━━━━━━━━━┓
|  my-pod-1  |--->| mysql (r/w replica)  |
┗━━━━━━━━━━━━┛    ┗━━━━━━━━━━━━━━━━━━━━━━┛
     

┏━━━━━━━━━━━━┓    ┏━━━━━━━━━━━━━━━━━━━━━━┓
|  my-pod-2  |--->| mysql (read replica) |
┗━━━━━━━━━━━━┛    ┗━━━━━━━━━━━━━━━━━━━━━━┛
     

hakaneroztekin

apiVersion: v1
kind: Service
metadata:
  name: basic-spring-service
spec:
  type: NodePort
  ports:
    - port: 8080
      nodePort: 30056
      targetPort: 8080

hakaneroztekin

apiVersion: apps/v1
kind: Deployment
metadata:
  name: basic-spring-app-deployment
spec:
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
      maxSurge: 1

hakaneroztekin

apiVersion: apps/v1
kind: Deployment
metadata:
  name: basic-spring-app-deployment
spec:
  replicas: 5
  selector:
    matchLabels:
      env: development
  minReadySeconds: 15

hakaneroztekin

apiVersion: v1
kind: Pod
metadata:
  name: basic-spring-app
  labels:
    env: development
spec:
  containers:
    - name: basic-spring-app
      image: hakaneroztekin/basic-spring-app

hakaneroztekin

                   control plane
           ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
           |┏━━━━━━━━━━┓    ┏━━━━━━━━━━━━━┓|
           ||          |<-->|cluster store||
           ||          |    ┗━━━━━━━━━━━━━┛|
           ||          |    ┏━━━━━━━━━━━━━┓|
kubectl<-->||api server|<-->|  controller ||
           ||          |    ┗━━━━━━━━━━━━━┛|
       ┏-->||          |    ┏━━━━━━━━━━━━━┓|
       |   ||          |<-->|  scheduler  ||

hakaneroztekin

version: "3.7"
services:
  spring-app:
    build: .
    image: spring-app
    ports:
      - "4000:8080"
    networks:
      - shared-network
    depends_on:

hakaneroztekin

version: "3.7"
services:
  spring-app:
    build: .
    image: spring-app
    ports:
      - "4000:8080"
    networks:
      - shared-network
    depends_on:

hakaneroztekin

$ docker network create -d bridge my-bridge-network
0ced7774d30c6be499dea707770a2a3783ef8336404d2b6bbb2e4d5743daebc9

hakaneroztekin

@RestController
@RequestMapping("/")
@RequiredArgsConstructor
public class GreetingsController {

    private static final String DOCUMENT_KEY = "clickCount";

    private final ClickCountRepository clickCountRepository;

    @GetMapping