How to Replace Synthetics with the httpcheck Receiver

Monitoring HTTP endpoints in production often requires more than just checking status codes, as a 200 OK response does not always indicate a fully functioning service. The OpenTelemetry Collector's httpcheck receiver, enhanced in version 0.134.0, now offers advanced validation capabilities such as sending specific headers and body contents, inspecting response bodies, and validating JSON structures, regex patterns, and response sizes. These upgrades allow users to detect endpoint degradation or delays, providing a comprehensive view of endpoint health. In Honeycomb, metrics are organized by tags, allowing users to track specific validation successes and failures. This improved system consolidates multiple monitoring tools into one, streamlining the telemetry pipeline and allowing synthetic checks to coexist with application metrics. While these validations are useful for smoke tests and health checks, they are not substitutes for full browser-based testing for complex user interactions. The httpcheck receiver, part of the OpenTelemetry Collector contrib distribution, offers an enhanced solution for verifying endpoint health and performance, with ongoing improvements driven by user feedback and community contributions.