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OpenTelemetry Output Plugin

This plugin sends metrics to OpenTelemetry servers and agents via gRPC.

Configuration

[[outputs.opentelemetry]]
  ## Override the default (localhost:4317) OpenTelemetry gRPC service
  ## address:port
  # service_address = "localhost:4317"

  ## Override the default (5s) request timeout
  # timeout = "5s"

  ## Optional TLS Config.
  ##
  ## Root certificates for verifying server certificates encoded in PEM format.
  # tls_ca = "/etc/telegraf/ca.pem"
  ## The public and private keypairs for the client encoded in PEM format.
  ## May contain intermediate certificates.
  # tls_cert = "/etc/telegraf/cert.pem"
  # tls_key = "/etc/telegraf/key.pem"
  ## Use TLS, but skip TLS chain and host verification.
  # insecure_skip_verify = false
  ## Send the specified TLS server name via SNI.
  # tls_server_name = "foo.example.com"

  ## Override the default (gzip) compression used to send data.
  ## Supports: "gzip", "none"
  # compression = "gzip"

  ## Additional OpenTelemetry resource attributes
  # [outputs.opentelemetry.attributes]
  # "service.name" = "demo"

  ## Additional gRPC request metadata
  # [outputs.opentelemetry.headers]
  # key1 = "value1"

Schema

The InfluxDB->OpenTelemetry conversion schema and implementation are hosted at https://github.com/influxdata/influxdb-observability .

For metrics, two input schemata exist. Line protocol with measurement name prometheus is assumed to have a schema matching Prometheus input plugin when metric_version = 2. Line protocol with other measurement names is assumed to have schema matching Prometheus input plugin when metric_version = 1. If both schema assumptions fail, then the line protocol data is interpreted as:

  • Metric type = gauge (or counter, if indicated by the input plugin)
  • Metric name = [measurement]_[field key]
  • Metric value = line protocol field value, cast to float
  • Metric labels = line protocol tags

Also see the OpenTelemetry input plugin.