Add Prometheus and Alertmanager configurations: implement custom rules, alerting, and Telegram notifications

2025-10-04 18:05:10 +02:00
parent 7cad175406
commit 0d3fb56f78
23 changed files with 416 additions and 235 deletions
@@ -0,0 +1,118 @@
+resource "kubernetes_config_map" "alertmanager" {
+  metadata {
+    name      = "alertmanager-conf"
+    namespace = kubernetes_namespace.prometheus.metadata[0].name
+    labels = {
+      name = "alertmanager-conf"
+    }
+  }
+
+  data = {
+    "alertmanager.yml" = local.alertmanager_config
+  }
+}
+
+resource "kubernetes_deployment" "alertmanager" {
+  metadata {
+    name      = "alertmanager"
+    namespace = kubernetes_namespace.prometheus.metadata[0].name
+    labels = {
+      app = "alertmanager"
+    }
+  }
+
+  spec {
+    replicas = 1
+
+    selector {
+      match_labels = {
+        app = "alertmanager"
+      }
+    }
+
+    template {
+      metadata {
+        labels = {
+          app = "alertmanager"
+        }
+        annotations = {
+          "checksum/config" = local.alertmanager_config_checksum
+        }
+      }
+
+      spec {
+        container {
+          name  = "alertmanager"
+          image = "prom/alertmanager:${local.app_version}"
+
+          args = [
+            "--config.file=/etc/alertmanager/alertmanager.yml",
+            "--storage.path=/alertmanager"
+          ]
+
+          port {
+            name           = "http"
+            container_port = 9093
+          }
+
+          volume_mount {
+            name       = "alertmanager-config"
+            mount_path = "/etc/alertmanager"
+          }
+
+          volume_mount {
+            name       = "alertmanager-storage"
+            mount_path = "/alertmanager"
+          }
+
+          security_context {
+            run_as_user                = 1000
+            run_as_group               = 1000
+            run_as_non_root            = true
+            allow_privilege_escalation = false
+          }
+        }
+
+        volume {
+          name = "alertmanager-config"
+          config_map {
+            name = kubernetes_config_map.alertmanager.metadata[0].name
+          }
+        }
+
+        volume {
+          name = "alertmanager-storage"
+          host_path {
+            path = local.alertmanager_folder
+            type = "DirectoryOrCreate"
+          }
+        }
+      }
+    }
+  }
+}
+
+resource "kubernetes_service" "alertmanager" {
+  metadata {
+    name      = "alertmanager"
+    namespace = kubernetes_namespace.prometheus.metadata[0].name
+    labels = {
+      app = "alertmanager"
+    }
+  }
+
+  spec {
+    selector = {
+      app = "alertmanager"
+    }
+
+    type = "ClusterIP"
+
+    port {
+      name        = "web"
+      port        = 9093
+      protocol    = "TCP"
+      target_port = "http"
+    }
+  }
+}