redis-prometheusrule.yaml

apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: prometheus-exporter-redis
spec:
  groups:
    - name: prometheus-exporter-redis.rules
      rules:
      - alert: RedisDown
        expr: redis_up == 0
        for: 1m
        labels:
          severity: critical
        annotations:
          message: "Redis instance {{ $labels.prometheus_exporter }} is DOWN"
      - alert: RedisQueueSizeHigh
        expr: redis_key_size > 120000
        for: 1m
        labels:
          severity: critical
        annotations:
          message: "Redis instance {{ $labels.prometheus_exporter }} has {{ $labels.key }} queue size increasing, probably workers are failing"
      - alert: RedisMemoryHigh
        expr: 100 * (redis_memory_used_bytes / redis_memory_max_bytes ) > 85
        for: 1m
        labels:
          severity: critical
        annotations:
          message: "Redis instance {{ $labels.prometheus_exporter }} Memory usage is High"
      - alert: RedisEvictionsHigh
        expr: sum(rate(redis_evicted_keys_total[5m])) by (prometheus_exporter) > 500
        for: 1m
        labels:
          severity: critical
        annotations:
          message: "Redis instance {{ $labels.prometheus_exporter }} number of Evictions is High"