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fix(monitoring): RedisMemoryHigh 誤報 — max_bytes=0 除以零修正
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- 加入 redis_memory_max_bytes > 0 前置條件
- 防止 Redis 未設 maxmemory 時除以零產生 +Inf 永遠觸發
- 影響: alerts-unified.yml + database-alerts.yaml

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
OG T
2026-04-09 11:41:10 +08:00
parent bf4ec18d0e
commit 85d4857d1b
2 changed files with 2 additions and 2 deletions
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2
k8s/monitoring/database-alerts.yaml
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@@ -149,7 +149,7 @@ spec:
# -----------------------------------------------------------------
- alert: RedisMemoryHigh
expr: |
redis_memory_used_bytes / redis_memory_max_bytes > 0.85
redis_memory_max_bytes > 0 and redis_memory_used_bytes / redis_memory_max_bytes > 0.85
for: 5m
labels:
severity: warning

2
ops/monitoring/alerts-unified.yml
View File

@@ -193,7 +193,7 @@ groups:
description: "當前連接數 {{ $value }} 超過 80"
- alert: RedisMemoryHigh
expr: redis_memory_used_bytes / redis_memory_max_bytes * 100 > 80
expr: redis_memory_max_bytes > 0 and redis_memory_used_bytes / redis_memory_max_bytes * 100 > 80
for: 5m
labels:
severity: warning