Dears,
Is it possible to achieve real HA using internal kubernetes ingress controller without external active/passive load balancing?
And second question: if I expose service with type LoadBalancer does it mean that all traffic and load goes through single node?
For both questions, it really depends on the environment you’re in.
servicetype LoadBalancer is a an extension of a HostPort service that interacts with something (often outside the cluster) to direct traffic to the HostPort. A port will be exposed on every node in the cluster and traffic will be redirected to pods backing your service. If you have a single pod targeted by that service, all your traffic will go through a single pod.
Small nit: Service LBs can target a NodePort but they can also target a VIP.