OpenTelemetry Metrics¶

This is a list of metrics exported by the OpenTelemetry SDKs and auto-instrumentation libraries.

General Metrics¶

The OpenTelemetry SDKs and auto-instrumentation libraries export the following general metrics:

Metric Name	Description
`target_info`	Information about the target service, such as the service name, service namespace, and container name.

Target information is exported as a set of labels, including:

Label Name	Description	Example Value
`os_description`	The operating system description.	`Linux 6.1.58+`
`os_type`	The operating system type.	`Linux`
`process_command_args`	The command arguments used to start the process.	`["/usr/lib/jvm/java-21-openjdk/bin/java","-jar","/app.jar"]`
`process_runtime_name`	The runtime name.	`OpenJDK Runtime Environment`
`process_runtime_version`	The runtime version.	`21.0.2+13-LTS`
`telemetry_sdk_language`	The telemetry SDK language.	`java`
`telemetry_sdk_version`	The telemetry SDK version.	`1.36.0`

The OpenTelemetry SDKs and auto-instrumentation libraries export the following metrics for HTTP servers:

Metric Name	Description
`http_server_request_duration_seconds_bucket`	Duration of HTTP server requests, in seconds (java)
`http_server_duration_milliseconds_bucket`	Duration of HTTP server requests, in milliseconds (node.js)

Metric Name	Description
`http_client_request_duration_seconds_bucket`	Duration of HTTP client requests, in seconds (java)
`http_client_duration_milliseconds_bucket`	Duration of HTTP client requests, in milliseconds (node.js)

The OpenTelemetry SDKs and auto-instrumentation libraries export the following metrics for database clients:

Metric Name	Description
`db_client_connections_create_time_milliseconds_bucket`	Duration of database client connection creation, in milliseconds.
`db_client_connections_create_time_milliseconds_count`	Count of database client connection creations, by duration.
`db_client_connections_create_time_milliseconds_sum`	Sum of database client connection creation durations, in milliseconds.

The OpenTelemetry SDKs and auto-instrumentation libraries export the following metrics for JVMs:

Metric Name	Description
`process_runtime_jvm_buffer_count`	Count of JVM buffers.
`process_runtime_jvm_buffer_limit_bytes`	Limit of JVM buffer sizes, in bytes.
`process_runtime_jvm_buffer_usage_bytes`	Usage of JVM buffer sizes, in bytes.

The OpenTelemetry SDKs and auto-instrumentation libraries export the following metrics for Kafka clients:

Metric Name	Description
`kafka_producer_*`	Metrics for Kafka producers.
`kafka_consumer_*`	Metrics for Kafka consumers.