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  • Elasticsearch
    • Clusters
      • Common cluster issues
        • Watermark errors
        • Circuit breaker errors
        • High CPU usage
        • High JVM memory pressure
        • Red or yellow health status
        • Rejected requests
        • Task queue backlog
        • Mapping explosion
        • Hot spotting
      • Unstable clusters
      • Unbalanced clusters
      • Remote clusters
      • Unassigned shards
      • Shard capacity issues
      • Cluster allocation API examples
    • Data
      • Data allocation
      • Index allocation
      • Preferred data tier
      • Incomplete migration to data tiers
      • Not enough nodes to allocate shard replicas
      • Total number of shards for an index exceeded
      • Total number of shards per node reached
      • Data corruption
      • Ingest Pipelines
    • Capacity
      • Data nodes out of disk
        • Increase disk capacity
        • Decrease disk usage
      • Master nodes out of disk
      • Other nodes out of disk
    • Snapshot and restore
      • Restore from snapshot
      • Broken repositories
        • Corrupted repositories