From: Tom Hughes <tom@compton.nu>
Date: Fri, 27 Jan 2023 19:07:56 +0000 (+0000)
Subject: Add an alert for low render rates on tile servers
X-Git-Url: https://git.openstreetmap.org/chef.git/commitdiff_plain/9d85f237141a96b44e915690b54c6efc2f852227

Add an alert for low render rates on tile servers
---

diff --git a/cookbooks/prometheus/templates/default/alert_rules.yml.erb b/cookbooks/prometheus/templates/default/alert_rules.yml.erb
index ebcb59f9c..3618f1461 100644
--- a/cookbooks/prometheus/templates/default/alert_rules.yml.erb
+++ b/cookbooks/prometheus/templates/default/alert_rules.yml.erb
@@ -638,6 +638,13 @@ groups:
           alertgroup: tile
         annotations:
           miss_rate: "{{ $value | humanizePercentage }}"
+      - alert: tile render rate
+        expr: sum(rate(renderd_zoom_metatiles_total[5m])) by (instance) < 1
+        for: 5m
+        labels:
+          alertgroup: tile
+        annotations:
+          render_rate: "{{ $value }} tiles/s"
   - name: time
     rules:
       - alert: clock not synchronising