{
  "id": "alerts-events",
  "title": "Alerts and events",
  "url": "https://redis.io/docs/latest/operate/rs/8.0/clusters/logging/alerts-events/",
  "summary": "Logged alerts and events",
  "content": "\nThe following alerts and events can appear in `syslog` and the Cluster Manager UI logs.\n\n## Alerts\n\n| Alert | UI message | Severity | Notes |\n|-------|------------|----------|-------|\n| aof_slow_disk_io | Redis performance is degraded as a result of disk I/O limits | True: error, False: info | Node alert |\n| authentication_err | Error authenticating with the source database | error | BDB event |\n| backup_delayed | Periodic backup has been delayed for longer than `\u003cthreshold\u003e` minutes | True: warning, False: info | BDB alert; Has threshold parameter in the data section of the log entry |\n| cpu_utilization | CPU utilization has reached `\u003cthreshold\u003e`% | True: warning, False: info | Node alert; Has global_threshold parameter in the key/value section of the log entry |\n| even_node_count | True high availability requires an odd number of nodes | True: warning, False: info | Cluster alert |\n| ephemeral_storage | Ephemeral storage has reached `\u003cthreshold\u003e`% of its capacity | True: warning, False: info | Node alert; Has global_threshold parameter in the key/value section of the log entry |\n| free_flash | Flash storage has reached `\u003cthreshold\u003e`% of its capacity | True: warning, False: info | Node alert; Has global_threshold parameter in the key/value section of the log entry |\n| high_latency | Latency is higher than `\u003cthreshold\u003e` milliseconds | True: warning, False: info | BDB alert; Has threshold parameter in the key/value section of the log entry |\n| high_syncer_lag | Sync lag is higher than `\u003cthreshold\u003e` seconds | True: warning, False: info | BDB alert; Has threshold parameter in the key/value section of the log entry |\n| high_throughput | Throughput is higher than `\u003cthreshold\u003e` RPS (requests per second) | True: warning, False: info | BDB alert; Has threshold parameter in the key/value section of the log entry |\n| inconsistent_rl_sw | Not all nodes in the cluster are running the same Redis Labs Enterprise Cluster version | True: warning, False: info | Cluster alert |\n| insufficient_disk_aofrw | Node has insufficient disk space for AOF rewrite | True: error, False: info | Node alert |\n| memory | Node memory has reached `\u003cthreshold\u003e`% of its capacity | True: warning, False: info | Node alert; Has global_threshold parameter in the key/value section of the log entry |\n| multiple_nodes_down | Multiple cluster nodes are down - this might cause data loss | True: warning, False: info | Cluster alert |\n| net_throughput | Network throughput has reached `\u003cthreshold\u003e` MB/s | True: warning, False: info | Node alert; Has global_threshold parameter in the key/value section of the log entry |\n| ocsp_query_failed | Failed querying OCSP server | True: error, False: info | Cluster alert |\n| ocsp_status_revoked | OCSP status revoked | True: error, False: info | Cluster alert |\n| persistent_storage | Persistent storage has reached `\u003cthreshold\u003e`% of its capacity | True: warning, False: info | Node alert; Has global_threshold parameter in the key/value section of the log entry |\n| ram_dataset_overhead | RAM Dataset overhead in a shard has reached `\u003cthreshold\u003e`% of its RAM limit | True: warning, False: info | BDB alert; Has threshold parameter in the key/value section of the log entry |\n| ram_overcommit | Cluster capacity is less than total memory allocated to its databases | True: error, False: info | Cluster alert |\n| ram_values | Percent of values in a shard's RAM is lower than `\u003cthreshold\u003e`% of its key count | True: warning, False: info | BDB alert; Has threshold parameter in the key/value section of the log entry |\n| shard_num_ram_values | Number of values in a shard's RAM is lower than `\u003cthreshold\u003e` values | True: warning, False: info | BDB alert; Has threshold parameter in the key/value section of the log entry |\n| size | Dataset size has reached `\u003cthreshold\u003e`% of the memory limit | True: warning, False: info | BDB alert; Has threshold parameter in the key/value section of the log entry |\n| syncer_connection_error | Syncer connection error | error | BDB alert |\n| syncer_general_error | Syncer general error | error | BDB alert |\n| too_few_nodes_for_replication | Database replication requires at least two nodes in cluster | True: warning, False: info | Cluster alert |\n\n## Events\n\n| Event | UI message | Severity | Notes |\n|-------|------------|----------|-------|\n| backup_failed | Backup failed | error | BDB event |\n| backup_started | Backup started | info | BDB event |\n| backup_succeeded | Backup succeeded | info | BDB event |\n| bdb_created | Database created | info | BDB event |\n| bdb_deleted | Database deleted | info | BDB event |\n| bdb_updated | Database updated | info | BDB event; Indicates that a BDB configuration has been updated |\n| checks_error | Node checks error | error | Node event; Indicates that one or more node checks have failed |\n| cluster_updated | Cluster settings updated | info | Cluster event; Indicates that cluster settings have been updated |\n| compression_unsup_err | Compression not supported by sync destination | error | BDB event |\n| crossslot_err | Sharded destination does not support operation executed on source | error | BDB event |\n| export_failed | Export failed | error | BDB event |\n| export_started | Export started | info | BDB event |\n| export_succeeded | Export succeeded | info | BDB event |\n| import_failed | Import failed | error | BDB event |\n| import_started | Import started | info | BDB event |\n| import_succeeded | Import succeeded | info | BDB event |\n| license_added | License added | info | Cluster event |\n| license_deleted | License deleted | info | Cluster event |\n| license_updated | License updated | info | Cluster event |\n| node_abort_remove_request | Node abort remove request | info | Node event |\n| node_joined | Node joined | info | Cluster event |\n| node_operation_failed | Node operation failed | error | Cluster event |\n| node_remove_abort_completed | Node remove abort completed | info | Cluster event; Node remove is a process that can fail and can also be aborted. If aborted, the abort can succeed or fail |\n| node_remove_abort_failed | Node remove abort failed | error | Cluster event; Node remove is a process that can fail and can also be aborted. If aborted, the abort can succeed or fail |\n| node_remove_completed | Node removed | info | Cluster event; Node remove is a process that can fail and can also be aborted. If aborted, the abort can succeed or fail |\n| node_remove_failed | Node removed | error | Cluster event; Node remove is a process that can fail and can also be aborted. If aborted, the abort can succeed or fail |\n| node_remove_request | Node remove request | info | Node event |\n| user_created | User created | info | User event |\n| user_deleted | User deleted | info | User event |\n| user_updated | User updated | info | User event; Indicates that a user configuration has been updated |\n",
  "tags": ["docs","operate","rs"],
  "last_updated": "2026-07-23T12:05:56-05:00"
}