From a61c99736685a2629b6018c203d02309dfdf2792 Mon Sep 17 00:00:00 2001
From: Jeltz <jeltz@auro.re>
Date: Fri, 3 Nov 2023 20:50:34 +0100
Subject: [PATCH] prometheus: monitor link usage for switches

---
 group_vars/prom/prometheus/switch.yml | 44 +++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/group_vars/prom/prometheus/switch.yml b/group_vars/prom/prometheus/switch.yml
index 1c4af87..6bc510e 100644
--- a/group_vars/prom/prometheus/switch.yml
+++ b/group_vars/prom/prometheus/switch.yml
@@ -44,4 +44,48 @@ prometheus__rules_switch:
       ErrorRate: !unsafe '{{ printf "%.2f" $value }} %'
       Interface: !unsafe "{{ $labels.ifName }}
         {{ if $labels.ifAlias }}- {{ $labels.ifAlias }}{{ end }}"
+  - alert: SwitchInLinkUsage
+    expr:
+      100 * rate(ifHCInOctets[5m]) / (ifHighSpeed * 1000000 / 8) > 50
+    for: 5m
+    keep_firing_for: 10m
+    labels:
+      severity: warning
+    annotations:
+      Usage: !unsafe '{{ printf "%.2f" $value }} %'
+      Interface: !unsafe "{{ $labels.ifName }}
+        {{ if $labels.ifAlias }}- {{ $labels.ifAlias }}{{ end }}"
+  - alert: SwitchInLinkUsage
+    expr:
+      100 * rate(ifHCInOctets[5m]) / (ifHighSpeed * 1000000 / 8) > 80
+    for: 5m
+    keep_firing_for: 10m
+    labels:
+      severity: critical
+    annotations:
+      Usage: !unsafe '{{ printf "%.2f" $value }} %'
+      Interface: !unsafe "{{ $labels.ifName }}
+        {{ if $labels.ifAlias }}- {{ $labels.ifAlias }}{{ end }}"
+  - alert: SwitchOutLinkUsage
+    expr:
+      100 * rate(ifHCOutOctets[5m]) / (ifHighSpeed * 1000000 / 8) > 50
+    for: 5m
+    keep_firing_for: 10m
+    labels:
+      severity: warning
+    annotations:
+      Usage: !unsafe '{{ printf "%.2f" $value }} %'
+      Interface: !unsafe "{{ $labels.ifName }}
+        {{ if $labels.ifAlias }}- {{ $labels.ifAlias }}{{ end }}"
+  - alert: SwitchOutLinkUsage
+    expr:
+      100 * rate(ifHCOutOctets[5m]) / (ifHighSpeed * 1000000 / 8) > 80
+    for: 5m
+    keep_firing_for: 10m
+    labels:
+      severity: warning
+    annotations:
+      Usage: !unsafe '{{ printf "%.2f" $value }} %'
+      Interface: !unsafe "{{ $labels.ifName }}
+        {{ if $labels.ifAlias }}- {{ $labels.ifAlias }}{{ end }}"
 ...