aditipatil0711/sre-week-four

Release Engineering at UpCommerce

Deploy stable version (Minikube, Deployments and Service creation):

minikube start
kubectl create ns sre

helm install upcommerce ./upcommerce -n sre

Confirm the deployment

kubectl get deployment -n sre

or check the pod

kubectl get po -n sre

Create Canary Version:

canary-deployment.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .Release.Name }}-canary-app
spec:
  replicas: {{ .Values.replicaCount }}
  selector:
    matchLabels:
      app: {{ .Release.Name }}-canary-app
  template:
    metadata:
      labels:
        app: {{ .Release.Name }}-canary-app
    spec:
      containers:
        - name: canary
          image: {{ .Values.canary.image }}
          ports:
            - containerPort: 5003
          imagePullPolicy: {{ .Values.imagePullPolicy }}
          resources:
            limits:
              cpu: {{ .Values.cpuLimit }}
              memory: {{ .Values.memoryLimit }}

canary-service.yml

apiVersion: v1
kind: Service
metadata:
  name: {{ .Release.Name }}-canary-service
spec:
  selector:
    app: {{ .Release.Name }}-canary-app
  ports:
    - protocol: TCP
      port: 5003
      targetPort: 5003

Add this deployment in values.yaml

canary:
  image: uonyeka/canary:linux-amd64

Roll back to stable release

Check deployment

kubectl get deployment -n sre

Or list the pod

List helm releases

helm list -a

Confirm Rollback

helm rollback upcommerce 2 -n sre

helm list -a