Ingress

1. Nginx Controller

2. Service Loadbalancing

2-1) Shopping Page

apiVersion: v1
kind: Pod
metadata:
  name: pod-shopping
  labels:
    category: shopping
spec:
  containers:
  - name: container
    image: kubetm/shopping

apiVersion: v1

kind: Service
metadata:
  name: svc-shopping
spec:
  selector:
    category: shopping
  ports:
  - port: 8080
  
  

2-2) Customer Center

apiVersion: v1
kind: Pod
metadata:
  name: pod-customer
  labels:
    category: customer
spec:
  containers:
  - name: container
    image: kubetm/customer

apiVersion: v1

kind: Service
metadata:
  name: svc-customer
spec:
  selector:
    category: customer
  ports:
  - port: 8080
2-3) Order Service
apiVersion: v1
kind: Pod
metadata:
  name: pod-order
  labels:
    category: order
spec:
  containers:
  - name: container
    image: kubetm/order

apiVersion: v1
kind: Service
metadata:
  name: svc-order
spec:
  selector:
    category: order
  ports:
  - port: 8080      

2-4) Ingress

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: service-loadbalancing
spec:
  ingressClassName: nginx
  rules:
  - http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: svc-shopping
            port:
              number: 8080
      - path: /customer
        pathType: Prefix
        backend:
          service:
            name: svc-customer
            port:
              number: 8080
      - path: /order
        pathType: Prefix
        backend:
          service:
            name: svc-order
            port:
              number: 8080
              

curl 192.168.56.30:30431/
curl 192.168.56.30:30431/order
curl 192.168.56.30:30431/customer

3. Canary Upgrade

3-1) App V1

apiVersion: v1
kind: Pod
metadata:
  name: pod-v1
  labels:
    app: v1
spec:
  containers:
  - name: container
    image: kubetm/app:v1

apiVersion: v1
kind: Service
metadata:
  name: svc-v1
spec:
  selector:
    app: v1
  ports:
  - port: 8080
3-2) App V2
apiVersion: v1
kind: Pod
metadata:
  name: pod-v2
  labels:
    app: v2
spec:
  containers:
  - name: container
    image: kubetm/app:v2

apiVersion: v1
kind: Service
metadata:
  name: svc-v2
spec:
  selector:
    app: v2
  ports:
  - port: 8080

3-4) Ingress - weight

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: canary-v2
  annotations:
    nginx.ingress.kubernetes.io/canary: "true"
    nginx.ingress.kubernetes.io/canary-weight: "10"
spec:
  ingressClassName: nginx
  rules:
  - host: www.app.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: svc-v2
            port:
              number: 8080
              

3-5) Ingress - header

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: canary-kr
  annotations:
    nginx.ingress.kubernetes.io/canary: "true"
    nginx.ingress.kubernetes.io/canary-by-header: "Accept-Language"
    nginx.ingress.kubernetes.io/canary-by-header-value: "kr"
spec:
  ingressClassName: nginx
  rules:
  - host: www.app.com
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: svc-v2
            port:
              number: 8080