feat: add ohi components to core

.github/workflows/ci-base.yaml

@@ -64,6 +64,8 @@ jobs:
         with:
           fetch-depth: 0 # required for tag metadata
 
+      - run: ./scripts/free-disk-space.sh
+
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
@@ -235,7 +237,7 @@ jobs:
           version: "2.11.2"
           args: ${{ env.goreleaser_args }}
           workdir: distributions/${{ inputs.distribution }}
-      
+
       - name: Skip GoReleaser build (cached)
         if: steps.cache-goreleaser.outputs.cache-hit == 'true'
         run: echo "✅ GoReleaser build skipped - using cached binaries"

distributions/nrdot-collector/README.md

@@ -16,6 +16,7 @@ Note: See [general README](../README.md) for information that applies to all dis
 |-----------------------|-----------|---------------------------|---------------|
 | Host Monitoring (default)      | `public`  | `nrdot-collector-host`    | [See 'Host Monitoring' below](#host-monitoring) |
 | Gateway Mode          | `alpha`   | N/A (new)                 | [See 'Gateway Mode' below](#gateway-mode) |
+| On-Host Integrations (OHI) | `alpha` | N/A (new)                 | Coming Soon |
 
 Note: While it's technically possible to have a single collector serve multiple use cases at the same time, we generally do not recommend or support this pattern due to the operational complexity that comes with it (configuration, deployment, scaling, ...). Instead we recommend deploying one collector per use case and chain them as necessary. Please note that when we say 'one collector' we refer to a logical service, not a single instance, i.e. you should still employ common scaling practices to ensure your architecture is resilient.  
 

distributions/nrdot-collector/THIRD_PARTY_NOTICES.md

@@ -36,6 +36,30 @@ Distributed under the following license(s):
 
 
 
+## [github.com/open-telemetry/opentelemetry-collector-contrib/extension/observer/dockerobserver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
+## [github.com/open-telemetry/opentelemetry-collector-contrib/extension/observer/hostobserver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
+## [github.com/open-telemetry/opentelemetry-collector-contrib/extension/observer/k8sobserver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
 ## [github.com/open-telemetry/opentelemetry-collector-contrib/processor/attributesprocessor](https://github.com/open-telemetry/opentelemetry-collector-contrib)
 
 Distributed under the following license(s):
@@ -116,6 +140,22 @@ Distributed under the following license(s):
 
 
 
+## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/dockerstatsreceiver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
+## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/elasticsearchreceiver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
 ## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/filelogreceiver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
 
 Distributed under the following license(s):
@@ -132,6 +172,46 @@ Distributed under the following license(s):
 
 
 
+## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/jmxreceiver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
+## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8seventsreceiver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
+## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kafkametricsreceiver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
+## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
+## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/nginxreceiver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
 ## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/prometheusreceiver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
 
 Distributed under the following license(s):
@@ -140,6 +220,22 @@ Distributed under the following license(s):
 
 
 
+## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/rabbitmqreceiver](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
+## [github.com/open-telemetry/opentelemetry-collector-contrib/receiver/receivercreator](https://github.com/open-telemetry/opentelemetry-collector-contrib)
+
+Distributed under the following license(s):
+
+* Apache-2.0
+
+
+
 ## [go.opentelemetry.io/collector/component](https://go.opentelemetry.io/collector/component)
 
 Distributed under the following license(s):

distributions/nrdot-collector/component-inventory.md

@@ -0,0 +1,78 @@
+# Component Inventory
+
+This document maps each component in the `nrdot-collector` distribution to the use cases that require it. As use cases might evolve and begin to use components that are already present in the distro, this list might become stale and need updating, so it's not meant to be an authoritative source but best-effort context for maintainers.
+
+**Legend:**
+- **Core**: Core (not use-case specific)
+- **Host**: Host Monitoring
+- **Gateway**: Gateway Mode
+- **OHI**: On-Host Integrations
+
+## Receivers
+
+| Component | Use Cases |
+|-----------|-----------|
+| `dockerstatsreceiver` | OHI |
+| `elasticsearchreceiver` | OHI |
+| `filelogreceiver` | Host |
+| `hostmetricsreceiver` | Host, OHI |
+| `jmxreceiver` | OHI |
+| `k8seventsreceiver` | OHI |
+| `kafkametricsreceiver` | OHI |
+| `kubeletstatsreceiver` | OHI |
+| `nginxreceiver` | OHI |
+| `otlpreceiver` | Core |
+| `prometheusreceiver` | Gateway |
+| `rabbitmqreceiver` | OHI |
+| `receivercreator` | OHI |
+
+## Processors
+
+| Component | Use Cases |
+|-----------|-----------|
+| `attributesprocessor` | Core |
+| `batchprocessor` | Core |
+| `cumulativetodeltaprocessor` | Core |
+| `filterprocessor` | Core |
+| `groupbyattrsprocessor` | Gateway |
+| `memorylimiterprocessor` | Core |
+| `metricstransformprocessor` | Core |
+| `resourcedetectionprocessor` | Core |
+| `resourceprocessor` | Gateway |
+| `spanprocessor` | Gateway |
+| `tailsamplingprocessor` | Gateway |
+| `transformprocessor` | Core |
+
+## Exporters
+
+| Component | Use Cases |
+|-----------|-----------|
+| `debugexporter` | Core |
+| `loadbalancingexporter` | Gateway |
+| `otlpexporter` | Core |
+| `otlphttpexporter` | Core |
+
+## Connectors
+
+| Component | Use Cases |
+|-----------|-----------|
+| `routingconnector` | Core |
+
+## Extensions
+
+| Component | Use Cases |
+|-----------|-----------|
+| `healthcheckextension` | Core |
+| `observer/dockerobserver` | OHI |
+| `observer/hostobserver` | OHI |
+| `observer/k8sobserver` | OHI |
+
+## Providers
+
+| Component | Use Cases |
+|-----------|-----------|
+| `envprovider` | Core |
+| `fileprovider` | Core |
+| `httpprovider` | Core |
+| `httpsprovider` | Core |
+| `yamlprovider` | Core |

distributions/nrdot-collector/manifest.yaml

@@ -6,9 +6,18 @@ dist:
   output_path: ./_build
 receivers:
   - gomod: go.opentelemetry.io/collector/receiver/otlpreceiver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/dockerstatsreceiver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/elasticsearchreceiver v0.142.0
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/filelogreceiver v0.142.0
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/hostmetricsreceiver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/jmxreceiver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8seventsreceiver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kafkametricsreceiver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/nginxreceiver v0.142.0
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/prometheusreceiver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/rabbitmqreceiver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/receiver/receivercreator v0.142.0
 processors:
   - gomod: go.opentelemetry.io/collector/processor/batchprocessor v0.142.0
   - gomod: go.opentelemetry.io/collector/processor/memorylimiterprocessor v0.142.0
@@ -31,6 +40,9 @@ connectors:
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/connector/routingconnector v0.142.0
 extensions:
   - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextension v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/observer/dockerobserver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/observer/hostobserver v0.142.0
+  - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/observer/k8sobserver v0.142.0
 providers:
   - gomod: go.opentelemetry.io/collector/confmap/provider/envprovider v1.48.0
   - gomod: go.opentelemetry.io/collector/confmap/provider/fileprovider v1.48.0

scripts/free-disk-space.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+#
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+echo "Available disk space before:"
+df -h /
+
+# The Android SDK is the biggest culprit for the lack of disk space in CI.
+# It is installed into /usr/local/lib/android manually (ie. not with apt) by this script:
+# https://github.com/actions/runner-images/blob/main/images/ubuntu/scripts/build/install-android-sdk.sh
+# so let's delete the directory manually.
+echo "Deleting unused Android SDK and tools..."
+sudo rm -rf /usr/local/lib/android
+
+echo "Available disk space after:"
+df -h /