Loadbalancer is used to handle a request and forward that request to a particular pod, but my question is how does the GKE LoadBalancer work, how is it different from the LoadBalancer we have in minikube, and how should we use LoadBalancer properly.
What is a loadbalancer in Kubernetes, Why do different Kubernetes engines like GKE have their own loadbalancer
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In GKE when you add a Service of type LoadBalancer, it makes the necessary Google Cloud API calls to create either an external network LB, or an internal TCP/UDP LB.
The cloud.google.com/load-balancer-type: "Internal" annotation denotes an internal LB; otherwise, GKE creates an external network load balancer. This type of LB operates at layer 3/4, and is not an application load balancer, and thus not aware of HTTP requests or headers.
The LB service was designed for deployments in external cloud providers. In Minikube you need to use the tunnel feature to expose it. tunnel runs as a process, creating a network route on the host to the service CIDR of the cluster using the cluster’s IP address as a gateway. The tunnel command exposes the external IP directly to programs running on the host OS.
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