From 8f97066717af4c6648b173f0868acef2d4690041 Mon Sep 17 00:00:00 2001
From: Ozarklake <67998142+Ozarklake@users.noreply.github.com>
Date: Mon, 29 Aug 2022 10:23:27 +0800
Subject: [PATCH] fix(rule): Check multi-master in non-cluster mode only

---
 dist/rules/redis/oliver006-redis-exporter.yml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/dist/rules/redis/oliver006-redis-exporter.yml b/dist/rules/redis/oliver006-redis-exporter.yml
index 770ede9..1bf2da5 100644
--- a/dist/rules/redis/oliver006-redis-exporter.yml
+++ b/dist/rules/redis/oliver006-redis-exporter.yml
@@ -22,6 +22,15 @@ groups:
         summary: Redis missing master (instance {{ $labels.instance }})
         description: "Redis cluster has no node marked as master.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
 
+    - alert: RedisTooManyMasters
+      expr: 'count(redis_instance_info{role="master",redis_mode!="cluster"}) > 1'
+      for: 0m
+      labels:
+        severity: critical
+      annotations:
+        summary: Redis too many masters (instance {{ $labels.instance }})
+        description: "Redis has too many nodes marked as master.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
     - alert: RedisDisconnectedSlaves
       expr: 'count without (instance, job) (redis_connected_slaves) - sum without (instance, job) (redis_connected_slaves) - 1 > 1'
       for: 0m