--- title: Only include resource detectors you need by building... description: The OpenTelemetry Collector Builder (ocb) now lets you exclude unused resource detectors at compile time instead of bundling all of them by default. Each... canonical: https://daily.dev/posts/only-include-resource-detectors-you-need-by-building-your-own-collector-ud8b055me twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Only include resource detectors you need by building your own Collector | daily.dev og:description: The OpenTelemetry Collector Builder (ocb) now lets you exclude unused resource detectors at compile time instead of bundling all of them by default. Each... og:url: https://daily.dev/posts/only-include-resource-detectors-you-need-by-building-your-own-collector-ud8b055me og:image: https://api.daily.dev/og/posts/ud8b055Me.png og:image:alt: Only include resource detectors you need by building your own Collector og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Only include resource detectors you need by building your own Collector **[OpenTelemetry](https://daily.dev/sources/opentelemetry)** · 5 min read · 0 upvotes · 0 comments ## Summary The OpenTelemetry Collector Builder (ocb) now lets you exclude unused resource detectors at compile time instead of bundling all of them by default. Each detector can be disabled with an omit_ build tag, or filtered using a new resource.detection.detectors config block introduced in ocb v0.163.1. Testing this against the otelcol-k8s distribution cut the binary from 182MB to 147MB, a 20% reduction, and removed 13 dependency packages. The feature relies on recent updates to the otelconf package and the resource detection processor. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How do I exclude unused resource detectors when building a custom OpenTelemetry Collector with ocb? Use the omit_ build tags or the new resource.detection.detectors config block in the ocb manifest, available since Collector and ocb v0.163.1. Each detector has an omit_ flag, such as omit_detector_system, or you can list only the detectors you want under a resource block, and ocb compiles out the rest at build time. _daily.dev surfaces OpenTelemetry Collector updates for teams optimizing their observability stack's footprint._ ### How much smaller does an OpenTelemetry Collector binary get after removing unused resource detectors? The otelcol-k8s distribution binary shrank from 182MB to 147MB, about a 20% reduction, after filtering out unneeded resource detectors. The dependency list also shrank by 13 packages, including cloud-provider specific detectors like AWS Elastic Beanstalk, Azure App Service, Hetzner, and DigitalOcean metadata libraries. _daily.dev tracks dependency and binary-size improvements for engineers tuning production observability builds._ ## Similar posts on daily.dev - [OpenTelemetry Collector distributions compared: Core, Contrib, OCB, and vendor builds. 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