helm: add support for configuring distributor (grafana#10531)

**What this PR does / why we need it**:

Add support for configuring distributor with Helm. Needed to be able to
enable IPv6 on that component.

**Which issue(s) this PR fixes**:
Fixes #<issue number>

**Special notes for your reviewer**:

**Checklist**
- [x] Reviewed the
[`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md)
guide (**required**)
- [x] Documentation added
- [x] N/A: Tests updated
- [x] `CHANGELOG.md` updated
- [x] N/A: If the change is worth mentioning in the release notes, add
`add-to-release-notes` label
- [x] N/A: Changes that require user attention or interaction to upgrade
are documented in `docs/sources/setup/upgrade/_index.md`
- [x] For Helm chart changes bump the Helm chart version in
`production/helm/loki/Chart.yaml` and update
`production/helm/loki/CHANGELOG.md` and
`production/helm/loki/README.md`. [Example
PR](grafana@d10549e)

Signed-off-by: Marc 'risson' Schmitt <[email protected]>

docs/sources/setup/install/helm/reference.md

@@ -1855,6 +1855,15 @@ See values.yaml
   "readOnlyRootFilesystem": true
 }
 </pre>
+</td>
+		</tr>
+		<tr>
+			<td>loki.distributor</td>
+			<td>object</td>
+			<td>Optional distributor configuration</td>
+			<td><pre lang="json">
+{}
+</pre>
 </td>
 		</tr>
 		<tr>

production/helm/loki/CHANGELOG.md

@@ -13,6 +13,10 @@ Entries should include a reference to the pull request that introduced the chang
 
 [//]: # (<AUTOMATED_UPDATES_LOCATOR> : do not remove this line. This locator is used by the CI pipeline to automatically create a changelog entry for each new Loki release. Add other chart versions and respective changelog entries bellow this line.)
 
+## 5.35.0
+
+- [FEATURE] Add support for configuring distributor.
+
 ## 5.34.0
 
 - [BUGFIX] Fix missing annotations when using Loki in single binary mode.

production/helm/loki/Chart.yaml

@@ -3,7 +3,7 @@ name: loki
 description: Helm chart for Grafana Loki in simple, scalable mode
 type: application
 appVersion: 2.9.2
-version: 5.34.0
+version: 5.35.0
 home: https://grafana.github.io/helm-charts
 sources:
   - https://github.com/grafana/loki

production/helm/loki/README.md

@@ -1,6 +1,6 @@
 # loki
 
-![Version: 5.34.0](https://img.shields.io/badge/Version-5.34.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.9.2](https://img.shields.io/badge/AppVersion-2.9.2-informational?style=flat-square)
+![Version: 5.35.0](https://img.shields.io/badge/Version-5.35.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.9.2](https://img.shields.io/badge/AppVersion-2.9.2-informational?style=flat-square)
 
 Helm chart for Grafana Loki in simple, scalable mode
 

production/helm/loki/values.yaml

@@ -235,6 +235,11 @@ loki:
     frontend_worker:
       {{- tpl (. | toYaml) $ | nindent 4 }}
     {{- end }}
+
+    {{- with .Values.loki.distributor }}
+    distributor:
+      {{- tpl (. | toYaml) $ | nindent 4 }}
+    {{- end }}
   # Should authentication be enabled
   auth_enabled: true
   # -- memberlist configuration (overrides embedded default)
@@ -338,6 +343,8 @@ loki:
     scheduler_address: '{{ include "loki.querySchedulerAddress" . }}'
   frontend_worker:
     scheduler_address: '{{ include "loki.querySchedulerAddress" . }}'
+  # -- Optional distributor configuration
+  distributor: {}
 enterprise:
   # Enable enterprise features, license must be provided
   enabled: false