From 72a89595e7078c61d572ae6034580e29ad8eeac6 Mon Sep 17 00:00:00 2001
From: Kazuhiro MUSASHI <simoom634@yahoo.co.jp>
Date: Sun, 12 Feb 2023 19:22:29 +0900
Subject: [PATCH] Add alert rules for `prometheus` and `vector-prometheus`.

---
 .../files/etc/prometheus.d/alerts/services.yml | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/cookbooks/prometheus/files/etc/prometheus.d/alerts/services.yml b/cookbooks/prometheus/files/etc/prometheus.d/alerts/services.yml
index a043706..343ee73 100644
--- a/cookbooks/prometheus/files/etc/prometheus.d/alerts/services.yml
+++ b/cookbooks/prometheus/files/etc/prometheus.d/alerts/services.yml
@@ -72,3 +72,21 @@ groups:
     annotations:
       summary: "exporter_proxy is not running: {{ $labels.instance }}."
       description: "exporter_proxy is not running: {{ $labels.instance }}."
+
+  - alert: prometheus
+    expr: node_systemd_unit_state{name="prometheus.service", state="active"} != 1
+    for: 5m
+    labels:
+      severity: error
+    annotations:
+      summary: "prometheus is not running: {{ $labels.instance }}."
+      description: "prometheus is not running: {{ $labels.instance }}."
+
+  - alert: vector-prometheus
+    expr: node_systemd_unit_state{name="vector-prometheus.service", state="active"} != 1
+    for: 5m
+    labels:
+      severity: error
+    annotations:
+      summary: "vector-prometheus is not running: {{ $labels.instance }}."
+      description: "vector-prometheus is not running: {{ $labels.instance }}."