From 0b4860279f0142998ebfe76af93f959d75c4a661 Mon Sep 17 00:00:00 2001
From: Kazuhiro MUSASHI <simoom634@yahoo.co.jp>
Date: Tue, 7 Feb 2023 23:47:20 +0900
Subject: [PATCH] Add `alert rule` for `filestat_exporter`.

---
 .../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 bddf02b..2617e34 100644
--- a/cookbooks/prometheus/files/etc/prometheus.d/alerts/services.yml
+++ b/cookbooks/prometheus/files/etc/prometheus.d/alerts/services.yml
@@ -45,3 +45,21 @@ groups:
     annotations:
       summary: "vector-snmp_exporter is not running: {{ $labels.instance }}."
       description: "vector-snmp_exporter is not running: {{ $labels.instance }}."
+
+  - alert: filestat_exporter
+    expr: node_systemd_unit_state{name="filestat_exporter.service", state="active"} != 1
+    for: 5m
+    labels:
+      severity: error
+    annotations:
+      summary: "filestat_exporter is not running: {{ $labels.instance }}."
+      description: "filestat_exporter is not running: {{ $labels.instance }}."
+
+  - alert: vector-filestat_exporter
+    expr: node_systemd_unit_state{name="vector-filestat_exporter.service", state="active"} != 1
+    for: 5m
+    labels:
+      severity: error
+    annotations:
+      summary: "vector-filestat_exporter is not running: {{ $labels.instance }}."
+      description: "vector-filestat_exporter is not running: {{ $labels.instance }}."