Combine AWS NLBs to use one NLB per cluster #249
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* Simplify clusters to come with a single NLB * Listen for apiserver traffic on port 6443 and forward to controllers (with healthy apiserver) * Listen for ingress traffic on ports 80/443 and forward to workers (with healthy ingress controller) * Reduce cost of default clusters by 1 NLB ($18.14/month) * Keep using CNAME records to the `ingress_dns_name` NLB and the nginx-ingress addon for Ingress (up to a few million RPS) * Users with heavy traffic (many million RPS) can create their own separate NLB(s) for Ingress and use the new output worker target groups * Fix issue where additional worker pools come with an extraneous network load balancer
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Affect on Ingress
ingress_dns_nameand thenginx-ingressaddon for Ingress (up to a few million RPS)Affect on Worker Pools
Overall, there are no changes to variables or outputs. Typhoon AWS clusters support the same features as before, but are cheaper to run.
Made possible by moving kube-apiserver from 443 to 6443 in #248