From c6531b06a0d7e69d43a18b346a30098ba15a7233 Mon Sep 17 00:00:00 2001
From: Kazuhiro MUSASHI <simoom634@yahoo.co.jp>
Date: Sat, 24 Oct 2020 13:06:54 +0900
Subject: [PATCH] Monitor `apt-mirror` update status.

---
 .../prometheus/files/etc/prometheus.d/alerts/filestat.yml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/cookbooks/prometheus/files/etc/prometheus.d/alerts/filestat.yml b/cookbooks/prometheus/files/etc/prometheus.d/alerts/filestat.yml
index 5579b21..24abde0 100644
--- a/cookbooks/prometheus/files/etc/prometheus.d/alerts/filestat.yml
+++ b/cookbooks/prometheus/files/etc/prometheus.d/alerts/filestat.yml
@@ -10,3 +10,11 @@ groups:
       summary: "Instance {{ $labels.instance }} requires rebooting."
       description: "{{ $labels.instance }} requires rebooting."
 
+  - alert: apt-mirror
+    expr: time() - file_stat_modif_time_seconds{path="/var/spool/apt-mirror/updated"} > 87000
+    for: 12h
+    labels:
+      severity: error
+    annotations:
+      summary: "apt-mirror is not updated."
+      description: "apt-mirror is not updated."