Question

How would you set up Kubernetes load balancing across containers?
Load balancing across Kubernetes containers ensures even distribution of traffic. Describe your strategy for implementing load balancing, either with Ingress controllers or service meshes like Istio, and include any example configurations.

Answer 1

In order to implement load balancing in between containers in Kubernetes, you would use a Service and an Ingress resource that can distribute traffic effectively. Here's how you can set this up:

1. Service for Load Balancing:
You'll commonly expose and load-balance traffic across multiple pod replicas in Kubernetes through a Service of type ClusterIP or LoadBalancer.

For example, you have a deployment named my-app with replicas. You can create a Service of type LoadBalancer or NodePort in order to distribute the traffic to the pods:

The selector field will match pods by the label app: my-app, thus routing traffic across those pods.
The load balancer automatically provisions an external load balancer in cloud environments, such as AWS ELB, GCP Load Balancer, and directs traffic to the service.