{
  "id": "alerts-v1-to-v2",
  "title": "Transition cluster manager alerts to Prometheus alerts",
  "url": "https://redis.io/docs/latest/operate/rs/8.0/monitoring/metrics_stream_engine/alerts-v1-to-v2/",
  "summary": "Transition from internal cluster manager alerts to external monitoring alerts using Prometheus.",
  "content": "\nAs Redis Software transitions from the [deprecated monitoring system](https://redis.io/docs/latest/operate/rs/monitoring/v1_monitoring) to the [new metrics stream engine](https://redis.io/docs/latest/operate/rs/monitoring/metrics_stream_engine), some internal cluster manager alerts were deprecated in favor of external monitoring solutions.\n\nYou can use the following table to transition from the deprecated alerts and set up equivalent alerts in Prometheus with [PromQL (Prometheus Query Language)](https://prometheus.io/docs/prometheus/latest/querying/basics/):\n\n| Cluster manager alert | Equivalent PromQL | Description |\n|-----------------------|-------------------|-------------|\n| BdbSizeAlert | \u003cspan class=\"break-all\"\u003e`sum by(db, cluster) (redis_server_used_memory) / sum by(db, cluster) (redis_server_maxmemory) \u003e 0.8`\u003c/span\u003e | Redis server memory usage exceeds 80% |\n| NodeMemoryAlert | \u003cspan class=\"break-all\"\u003e`(node_memory_MemTotal_bytes - node_memory_MemAvailable_bytes) / node_memory_MemTotal_bytes \u003e 0.7`\u003c/span\u003e | Node memory usage exceeds 70% |\n| NodeFreeFlashAlert | \u003cspan class=\"break-all\"\u003e`(node_available_flash_bytes - node_bigstore_free_bytes) / node_available_flash_bytes \u003e 0.7`\u003c/span\u003e | Node flash storage usage exceeds 70% |\n| NodeEphemeralStorageAlert | \u003cspan class=\"break-all\"\u003e`(node_ephemeral_storage_avail_bytes - node_ephemeral_storage_free_bytes) / node_ephemeral_storage_avail_bytes \u003e 0.7`\u003c/span\u003e | Node ephemeral storage usage exceeds 70% |\n| NodePersistentStorageAlert | \u003cspan class=\"break-all\"\u003e`(node_persistent_storage_avail_bytes - node_persistent_storage_free_bytes) / node_persistent_storage_avail_bytes \u003e 0.7`\u003c/span\u003e | Node persistent storage usage exceeds 70% |\n\n",
  "tags": ["docs","operate","rs"],
  "last_updated": "2026-07-23T12:05:56-05:00"
}