ElasticsearchMetricelasticsearch.node.cluster.io
Cluster network IO bytes
OpenTelemetry (1)Summary
Captures inter-node I/O statistics related to cluster communication and coordination activities. This metric tracks the data exchange volume and efficiency between nodes, reflecting distributed search coordination, replication, and recovery traffic. Anomalies in cluster I/O patterns may indicate network bottlenecks, slow nodes causing request timeouts (as noted in the "Socket Timeout During Heavy Operations" insight), or inefficient query routing.
Interface Metrics (1)
OpenTelemetry
Related Insights (2)
High network throughput or connection count on cluster transport layer indicates heavy inter-node communication that can saturate network bandwidth and cause coordination delays.
Cross-cluster search queries can cause significant coordination overhead, network traffic, and timeout issues when remote clusters are slow or have high latency.