# Consuming OpenTelemetry Entity Events with an Event-Sourced Consumer

DevFeed: [Consuming OpenTelemetry Entity Events with an Event-Sourced Consumer](<https://devfeed.tech/articles/what-can-you-do-with-opentelemetry-entity-events-32567.md>)

Original publisher: [Read original article](<https://opentelemetry.io/blog/2026/consuming-opentelemetry-entity-events/>)

Author: OpenTelemetry Authors; Docs CC BY

Published: 2026-08-14T07:10:08Z

Content type: tutorial

Language: en

Sources: [Blog on OpenTelemetry](<https://devfeed.tech/sources/blog-on-opentelemetry.md>)

Topics: [OpenTelemetry](<https://devfeed.tech/topics/opentelemetry.md>), [observability](<https://devfeed.tech/topics/observability.md>), [telemetry](<https://devfeed.tech/topics/telemetry.md>), [systems](<https://devfeed.tech/topics/systems.md>)

Tags: [logs](<https://devfeed.tech/tags/logs.md>), [metrics](<https://devfeed.tech/tags/metrics.md>), [observability](<https://devfeed.tech/tags/observability.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [opentelemetry](<https://devfeed.tech/tags/opentelemetry.md>), [services](<https://devfeed.tech/tags/services.md>), [systems](<https://devfeed.tech/tags/systems.md>), [traces](<https://devfeed.tech/tags/traces.md>), [volumes](<https://devfeed.tech/tags/volumes.md>)

## AI overview

This post explains how to consume OpenTelemetry entity events, which represent the inventory and lifecycle changes of hosts, interfaces, switches, services, and volumes. It presents an open source consumer as a worked example and recommends an event-sourced pipeline that preserves both current state and history.

## Source excerpt

Metrics, logs, and traces tell you how your systems behave. They are much quieter about what actually exists: which hosts, interfaces, switches, services, and volumes are out there right now, and, crucially, how that picture changed over the last hour, day, or quarter. That living inventory has stayed a blind spot in the open observability stack. OpenTelemetry's entity events, coming out of the Entities SIG and described in the Entity Data Model, are the piece that starts to close it. Entity events are a stream. The interesting question is "what do I do once they arrive?" This post walks through one answer, using an open source consumer as a worked example.