Chapter 7: Updating and Scaling an Application in Kubernetes
Activity 8: Enabling Autoscaling and Performing a Rolling Update
Solution:
Perform the following steps to complete this activity:
- Create a deployment definition file that uses the suakbas/lesson07:v1 image and has the RollingUpdate strategy type set; this application does a CPU-intensive operation:
apiVersion: apps/v1
kind: Deployment
metadata:
name: lesson07-deployment
spec:
replicas: 1
strategy:
type: RollingUpdate
selector:
matchLabels:
app: lesson07
template:
metadata:
labels:
app: lesson07
spec:
containers:
- image: suakbas/lesson07:v1
imagePullPolicy: Always
name: lesson07
resources:
requests:
memory: "500m"
cpu: "250m"
- Deploy the deployment and check whether the pod is running:
$ kubectl apply -f deployment.yaml -n lesson-7
$ kubectl get pods -n lesson-7
Figure 7.21: Deploying the lesson07-deployment to the...
