I would deploy all of your applications to the same Kubernetes instance. If you need to worry about isolating specific applications on different hosts, that can

I would deploy all of your applications to the same Kubernetes instance. If you need to worry about isolating specific applications on different hosts, that can be accomplished by labeling those hosts and setting up affinity rules. In other words, hosts can be split into different zones and pods deployed for specific zones, but still have one larger Kubernetes instance.