Add an availability monitor (#16)

.github/workflows/test.yml

@@ -7,8 +7,7 @@ on:
 env:
   TF_VAR_project: ${{ secrets.GCLOUD_PROJECT }}
 jobs:
-  terraform:
-    name: Create test CR
+  test:
     runs-on: ubuntu-latest
     permissions:
       id-token: write

main.tf

@@ -161,3 +161,35 @@ module "lb" {
     "crayfits"  = module.crayfits.backend
   }
 }
+
+resource "google_monitoring_uptime_check_config" "availability" {
+  for_each = toset([
+    "crayfits",
+    "homarus",
+    "houdini",
+    "hypercube"
+  ])
+  display_name = "${each.value}-availability"
+  timeout = "10s"
+  period = "60s"
+  project = var.project
+  selected_regions = [
+    "USA_OREGON",
+    "USA_VIRGINIA",
+    "USA_IOWA"
+  ]
+  http_check {
+    path = "/${each.value}/healthcheck"
+    port = "443"
+    use_ssl = true
+    validate_ssl = true
+  }
+
+  monitored_resource {
+    type = "uptime_url"
+    labels = {
+      project_id = var.project
+      host = "microservices.libops.site"
+    }
+  }
+}

modules/lb/main.tf

@@ -77,6 +77,18 @@ resource "google_compute_url_map" "default" {
         service = path_rule.value
       }
     }
+    dynamic "path_rule" {
+      for_each = var.backends
+      content {
+        paths   = ["/${path_rule.key}/healthcheck"]
+        service = path_rule.value
+        route_action {
+          url_rewrite {
+            path_prefix_rewrite = "/healthcheck"
+          }
+        }
+      }
+    }
   }
 }