opentelemetry-collector/receiver/otlpreceiver

OTLP Receiver

Status
Stability	traces stable
	metrics stable
	logs beta
Supported pipeline types	traces, metrics, logs
Distributions	core, contrib

Receives data via gRPC or HTTP using OTLP format.

Getting Started

All that is required to enable the OTLP receiver is to include it in the receiver definitions. A protocol can be disabled by simply not specifying it in the list of protocols.

receivers:
  otlp:
    protocols:
      grpc:
      http:

The following settings are configurable:

• endpoint (default = 0.0.0.0:4317 for grpc protocol, 0.0.0.0:4318 http protocol): host:port to which the receiver is going to receive data. The valid syntax is described at https://github.com/grpc/grpc/blob/master/doc/naming.md.

Advanced Configuration

Several helper files are leveraged to provide additional capabilities automatically:

• gRPC settings including CORS
• TLS and mTLS settings
• Queuing, retry and timeout settings

Writing with HTTP/JSON

The OTLP receiver can receive trace export calls via HTTP/JSON in addition to gRPC. The HTTP/JSON address is the same as gRPC as the protocol is recognized and processed accordingly. Note the serialization format needs to be protobuf JSON.

To write traces with HTTP/JSON, POST to [address]/v1/traces for traces, to [address]/v1/metrics for metrics, to [address]/v1/logs for logs. The default port is 4318.

CORS (Cross-origin resource sharing)

The HTTP/JSON endpoint can also optionally configure CORS under cors:. Specify what origins (or wildcard patterns) to allow requests from as allowed_origins. To allow additional request headers outside of the default safelist, set allowed_headers. Browsers can be instructed to cache responses to preflight requests by setting max_age.

receivers:
  otlp:
    protocols:
      http:
        endpoint: "localhost:4318"
        cors:
          allowed_origins:
            - http://test.com
            # Origins can have wildcards with *, use * by itself to match any origin.
            - https://*.example.com
          allowed_headers:
            - Example-Header
          max_age: 7200