---
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
    creationTimestamp: null
    labels:
        app: prometheus-operator
        release: prometheus-operator
    name: redis
    namespace: monitoring
spec:
    groups:
        - name: redis.memory
          rules:
              - alert: RedisMemoryAlmostFull
                annotations:
                    message: 'Redis memory is at {{ $value | humanizePercentage }} of maximum for 2 days in a row'
                expr: redis_memory_used_bytes/redis_memory_max_bytes > 0.8
                for: 2d
                labels:
                    severity: warning