As load increases on your application, you can manually increase the number of pod replicas in your deployment. Replicas are managed by a ReplicaSet.
To scale the application to two replicas, run the following command:
kubectl scale deployment %MYPROJECT%-deployment --replicas=2
kubectl scale deployment $MYPROJECT-deployment --replicas=2
After a shortwhile, you will see two pods for your application in the Kubernetes dashboard (or with
kubectl get pods). The Ingress controller in the cluster will handles the load balancing between the two replicas. Horizontal scaling can also be made automatic.
Refer to Kubernetes documentation for manual and automatic scaling: