chore: Add monitor for Ogmios instance (#30)

* chore: Add monitor for Ogmios instance

* Add role label to ogmios instance

Author: gonzalezzfelipe

Diff for: bootstrap/instance/monitor.tf

@@ -0,0 +1,27 @@
+resource "kubernetes_manifest" "instance_monitor" {
+  manifest = {
+    apiVersion = "monitoring.coreos.com/v1"
+    kind       = "PodMonitor"
+    metadata = {
+      labels = {
+        "app.kubernetes.io/component" = "o11y"
+        "app.kubernetes.io/part-of"   = "demeter"
+      }
+      name      = "instance"
+      namespace = var.namespace
+    }
+    spec = {
+      selector = {
+        matchLabels = {
+          role = "instance"
+        }
+      }
+      podMetricsEndpoints = [
+        {
+          port = "api",
+          path = "/metrics"
+        }
+      ]
+    }
+  }
+}

Diff for: bootstrap/instance/ogmios.tf

@@ -11,6 +11,7 @@ resource "kubernetes_deployment_v1" "ogmios" {
     name      = local.name
     namespace = var.namespace
     labels = {
+      "role"                               = "instance"
       "demeter.run/kind"                   = "OgmiosInstance"
       "cardano.demeter.run/network"        = var.network
       "cardano.demeter.run/ogmios-version" = var.ogmios_version
@@ -20,6 +21,7 @@ resource "kubernetes_deployment_v1" "ogmios" {
     replicas = var.replicas
     selector {
       match_labels = {
+        "role"                               = "instance"
         "demeter.run/instance"               = local.name
         "cardano.demeter.run/network"        = var.network
         "cardano.demeter.run/ogmios-version" = var.ogmios_version
@@ -29,6 +31,7 @@ resource "kubernetes_deployment_v1" "ogmios" {
       metadata {
         name = local.name
         labels = {
+          "role"                               = "instance"
           "demeter.run/instance"               = local.name
           "cardano.demeter.run/network"        = var.network
           "cardano.demeter.run/ogmios-version" = var.ogmios_version