ElasticsearchMetricelasticsearch.transport.tx_size
Bytes sent
Summary
Tracks the total bytes transmitted over Elasticsearch's internal transport layer used for inter-node communication. This counter metric captures all outbound cluster traffic including search coordination, data replication, and cluster state synchronization. Increasing transmission rates indicate higher inter-node data movement, which may signal search scatter-gather amplification, excessive shard relocations, or replication catch-up scenarios.
Interface Metrics (4)
Datadog
DatadogRelated 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.