Visualize Network Metrics

The Network Charts in Pulse display real-time data transfer and connection metrics for ClickHouse servers.

Use these charts to:

In the Pulse UI, go to ClickHouse > Dashboard.
On the ClickHouse page, select the Network tab.
Set a time range and data refresh interval (for example, 10 s, 20 m, 2 h, 4 d, or 1 w) to focus on relevant and up-to-date data.

Pulse then displays the network charts, which provide insights into network utilization, client connections, and server load.

Chart	Description
Network Send Throughput	Represents the rate of data being transmitted (bytes per second) over the network interface. This metric helps identify outgoing data volume and bandwidth utilization.
Network Receive Throughput	Represents the rate of incoming network traffic (bytes per second) received on the network interface. Useful for tracking inbound data flow and network load.
HTTP Connections	Tracks the current number of open HTTP connections to the ClickHouse server. Each connection represents a client—such as Pulse, Prometheus, or another application—communicating with ClickHouse over HTTP.
TCP Connections	Displays the current number of active TCP client connections to the ClickHouse server using the native protocol, reflecting active client sessions or workloads.
HTTP Rejected Connections	Tracks the number of HTTP connection attempts rejected, usually due to reaching the configured connection limit or resource constraints.
TCP Rejected Connections	Tracks the number of TCP connection attempts rejected, often when the server reaches its maximum allowed client connections.

Each chart includes the following options and actions:

Show Anomaly Detection: Displays deviations from the normal pattern based on historical data.
Tip: Refer to the chart description for more details.
Refresh: Updates the chart to display the latest available data.
Maximize: Expands the chart for a full-page view.
Download: Exports the chart data in .xlsx or .csv format.

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