Add networking settings for canary proxies

Canary proxies are not receiving real traffic but can be useful when testing Nomulus deployment (probers will probe canary proxy and compare metrics with production proxy). This CL added a separate load balancer for a canary proxy, running on the same clusters as production proxy.

The canary proxies have their own IP addresses, but are not assigned domain names. Probers will directly connect to these endpoints by IP.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=193234937

java/google/registry/proxy/terraform/example_config.tf

@@ -28,8 +28,5 @@ output "proxy_instance_groups" {
 }
 
 output "proxy_ip_addresses" {
-  value = {
-    ipv4 = "${module.proxy.proxy_ipv4_address}"
-    ipv6 = "${module.proxy.proxy_ipv6_address}"
-  }
+  value = "${module.proxy.proxy_ip_addresses}"
 }

java/google/registry/proxy/terraform/modules/dns.tf

@@ -8,7 +8,7 @@ resource "google_dns_record_set" "proxy_epp_a_record" {
   type         = "A"
   ttl          = 300
   managed_zone = "${google_dns_managed_zone.proxy_domain.name}"
-  rrdatas      = ["${google_compute_global_address.proxy_ipv4_address.address}"]
+  rrdatas      = ["${module.proxy_networking.proxy_ipv4_address}"]
 }
 
 resource "google_dns_record_set" "proxy_epp_aaaa_record" {
@@ -16,7 +16,7 @@ resource "google_dns_record_set" "proxy_epp_aaaa_record" {
   type         = "AAAA"
   ttl          = 300
   managed_zone = "${google_dns_managed_zone.proxy_domain.name}"
-  rrdatas      = ["${google_compute_global_address.proxy_ipv6_address.address}"]
+  rrdatas      = ["${module.proxy_networking.proxy_ipv6_address}"]
 }
 
 resource "google_dns_record_set" "proxy_whois_a_record" {
@@ -24,7 +24,7 @@ resource "google_dns_record_set" "proxy_whois_a_record" {
   type         = "A"
   ttl          = 300
   managed_zone = "${google_dns_managed_zone.proxy_domain.name}"
-  rrdatas      = ["${google_compute_global_address.proxy_ipv4_address.address}"]
+  rrdatas      = ["${module.proxy_networking.proxy_ipv4_address}"]
 }
 
 resource "google_dns_record_set" "proxy_whois_aaaa_record" {
@@ -32,5 +32,5 @@ resource "google_dns_record_set" "proxy_whois_aaaa_record" {
   type         = "AAAA"
   ttl          = 300
   managed_zone = "${google_dns_managed_zone.proxy_domain.name}"
-  rrdatas      = ["${google_compute_global_address.proxy_ipv6_address.address}"]
+  rrdatas      = ["${module.proxy_networking.proxy_ipv6_address}"]
 }

java/google/registry/proxy/terraform/modules/gke.tf

@@ -2,21 +2,18 @@ module "proxy_gke_americas" {
   source                      = "./gke"
   proxy_cluster_region        = "americas"
   proxy_service_account_email = "${google_service_account.proxy_service_account.email}"
-  proxy_ports                 = "${var.proxy_ports}"
 }
 
 module "proxy_gke_emea" {
   source                      = "./gke"
   proxy_cluster_region        = "emea"
   proxy_service_account_email = "${google_service_account.proxy_service_account.email}"
-  proxy_ports                 = "${var.proxy_ports}"
 }
 
 module "proxy_gke_apac" {
   source                      = "./gke"
   proxy_cluster_region        = "apac"
   proxy_service_account_email = "${google_service_account.proxy_service_account.email}"
-  proxy_ports                 = "${var.proxy_ports}"
 }
 
 locals {
@@ -26,7 +23,3 @@ locals {
     apac     = "${module.proxy_gke_apac.proxy_instance_group}"
   }
 }
-
-output "proxy_instance_groups" {
-  value = "${local.proxy_instance_groups}"
-}

java/google/registry/proxy/terraform/modules/gke/input.tf

@@ -11,7 +11,3 @@ variable "proxy_cluster_zones" {
     apac     = "asia-northeast1-c"
   }
 }
-
-variable "proxy_ports" {
-  type = "map"
-}

java/google/registry/proxy/terraform/modules/input.tf

@@ -33,3 +33,14 @@ variable "proxy_ports" {
     epp          = 30002
   }
 }
+
+# Node ports exposed by the canary proxy.
+variable "proxy_ports_canary" {
+  type = "map"
+
+  default = {
+    health_check = 40000
+    whois        = 40001
+    epp          = 40002
+  }
+}

java/google/registry/proxy/terraform/modules/networking.tf

@@ -1,129 +1,12 @@
-resource "google_compute_global_address" "proxy_ipv4_address" {
-  name       = "proxy-ipv4-address"
-  ip_version = "IPV4"
+module "proxy_networking" {
+  source                = "./networking"
+  proxy_instance_groups = "${local.proxy_instance_groups}"
+  proxy_ports           = "${var.proxy_ports}"
 }
 
-resource "google_compute_global_address" "proxy_ipv6_address" {
-  name       = "proxy-ipv6-address"
-  ip_version = "IPV6"
-}
-
-resource "google_compute_firewall" "proxy_firewall" {
-  name    = "proxy-firewall"
-  network = "default"
-
-  allow {
-    protocol = "tcp"
-
-    ports = [
-      "${var.proxy_ports["epp"]}",
-      "${var.proxy_ports["whois"]}",
-      "${var.proxy_ports["health_check"]}",
-    ]
-  }
-
-  source_ranges = [
-    "130.211.0.0/22",
-    "35.191.0.0/16",
-  ]
-
-  target_tags = [
-    "proxy-cluster",
-  ]
-}
-
-resource "google_compute_health_check" "proxy_health_check" {
-  name = "proxy-health-check"
-
-  tcp_health_check {
-    port     = "${var.proxy_ports["health_check"]}"
-    request  = "HEALTH_CHECK_REQUEST"
-    response = "HEALTH_CHECK_RESPONSE"
-  }
-}
-
-resource "google_compute_backend_service" "epp_backend_service" {
-  name        = "epp-backend-service"
-  protocol    = "TCP"
-  timeout_sec = 3600
-  port_name   = "epp"
-
-  backend {
-    group = "${local.proxy_instance_groups["americas"]}"
-  }
-
-  backend {
-    group = "${local.proxy_instance_groups["emea"]}"
-  }
-
-  backend {
-    group = "${local.proxy_instance_groups["apac"]}"
-  }
-
-  health_checks = [
-    "${google_compute_health_check.proxy_health_check.self_link}",
-  ]
-}
-
-resource "google_compute_backend_service" "whois_backend_service" {
-  name        = "whois-backend-service"
-  protocol    = "TCP"
-  timeout_sec = 60
-  port_name   = "whois"
-
-  backend {
-    group = "${local.proxy_instance_groups["americas"]}"
-  }
-
-  backend {
-    group = "${local.proxy_instance_groups["emea"]}"
-  }
-
-  backend {
-    group = "${local.proxy_instance_groups["apac"]}"
-  }
-
-  health_checks = [
-    "${google_compute_health_check.proxy_health_check.self_link}",
-  ]
-}
-
-resource "google_compute_target_tcp_proxy" "epp_tcp_proxy" {
-  name            = "epp-tcp-proxy"
-  proxy_header    = "PROXY_V1"
-  backend_service = "${google_compute_backend_service.epp_backend_service.self_link}"
-}
-
-resource "google_compute_target_tcp_proxy" "whois_tcp_proxy" {
-  name            = "whois-tcp-proxy"
-  proxy_header    = "PROXY_V1"
-  backend_service = "${google_compute_backend_service.whois_backend_service.self_link}"
-}
-
-resource "google_compute_global_forwarding_rule" "epp_ipv4_forwarding_rule" {
-  name       = "epp-ipv4-forwarding-rule"
-  ip_address = "${google_compute_global_address.proxy_ipv4_address.address}"
-  target     = "${google_compute_target_tcp_proxy.epp_tcp_proxy.self_link}"
-  port_range = "700"
-}
-
-resource "google_compute_global_forwarding_rule" "epp_ipv6_forwarding_rule" {
-  name       = "epp-ipv6-forwarding-rule"
-  ip_address = "${google_compute_global_address.proxy_ipv6_address.address}"
-  target     = "${google_compute_target_tcp_proxy.epp_tcp_proxy.self_link}"
-  port_range = "700"
-}
-
-resource "google_compute_global_forwarding_rule" "whois_ipv4_forwarding_rule" {
-  name       = "whois-ipv4-forwarding-rule"
-  ip_address = "${google_compute_global_address.proxy_ipv4_address.address}"
-  target     = "${google_compute_target_tcp_proxy.whois_tcp_proxy.self_link}"
-  port_range = "43"
-}
-
-resource "google_compute_global_forwarding_rule" "whois_ipv6_forwarding_rule" {
-  name       = "whois-ipv6-forwarding-rule"
-  ip_address = "${google_compute_global_address.proxy_ipv6_address.address}"
-  target     = "${google_compute_target_tcp_proxy.whois_tcp_proxy.self_link}"
-  port_range = "43"
+module "proxy_networking_canary" {
+  source                = "./networking"
+  proxy_instance_groups = "${local.proxy_instance_groups}"
+  suffix                = "-canary"
+  proxy_ports           = "${var.proxy_ports_canary}"
 }

java/google/registry/proxy/terraform/modules/output.tf

@@ -2,14 +2,19 @@ output "proxy_name_servers" {
   value = "${google_dns_managed_zone.proxy_domain.name_servers}"
 }
 
+output "proxy_instance_groups" {
+  value = "${local.proxy_instance_groups}"
+}
+
 output "proxy_service_account_client_id" {
   value = "${google_service_account.proxy_service_account.unique_id}"
 }
 
-output "proxy_ipv4_address" {
-  value = "${google_compute_global_address.proxy_ipv4_address.address}"
-}
-
-output "proxy_ipv6_address" {
-  value = "${google_compute_global_address.proxy_ipv6_address.address}"
+output "proxy_ip_addresses" {
+  value = {
+    ipv4        = "${module.proxy_networking.proxy_ipv4_address}"
+    ipv6        = "${module.proxy_networking.proxy_ipv6_address}"
+    ipv4_canary = "${module.proxy_networking_canary.proxy_ipv4_address}"
+    ipv6_canary = "${module.proxy_networking_canary.proxy_ipv6_address}"
+  }
 }

java/google/registry/proxy/terraform/update_named_ports.sh

@@ -21,6 +21,7 @@
 while read line
 do
   gcloud compute instance-groups set-named-ports \
-    --named-ports whois:30001,epp:30002 $line
+    --named-ports whois:30001,epp:30002,whois-canary:40001,epp-canary:40002 \
+    $line
 done < <(terraform output proxy_instance_groups | awk '{print $3}' | \
   awk -F '/' '{print "--project", $7, "--zone", $9, $11}')