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Merged
merged 2 commits into from
Nov 19, 2025
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feat(helm): allow configuration of service trafficDistribution parameter #19558

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31d3816
feat: allow configuration of service trafficDistribution parameter
frittentheke Oct 21, 2025
c4fd08b
Merge branch 'main' into trafficDistribution
JStickler Nov 17, 2025
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118 changes: 112 additions & 6 deletions docs/sources/setup/install/helm/reference.md
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Expand Up @@ -414,6 +414,7 @@ This is the generated reference for the Loki Helm Chart values.
"service": {
"annotations": {},
"labels": {},
"trafficDistribution": "",
"type": "ClusterIP"
},
"targetModule": "backend",
Expand Down Expand Up @@ -777,6 +778,15 @@ null
<td><pre lang="json">
{}
</pre>
</td>
</tr>
<tr>
<td>backend.service.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution for backend Service</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down Expand Up @@ -5251,6 +5261,15 @@ null
<td><pre lang="json">
80
</pre>
</td>
</tr>
<tr>
<td>gateway.service.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution for gateway service</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down Expand Up @@ -5484,6 +5503,7 @@ null
"terminationGracePeriodSeconds": 300,
"tolerations": [],
"topologySpreadConstraints": [],
"trafficDistribution": "",
"updateStrategy": {
"type": "RollingUpdate"
}
Expand Down Expand Up @@ -5835,6 +5855,15 @@ null
<td><pre lang="json">
[]
</pre>
</td>
</tr>
<tr>
<td>indexGateway.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution for index-gateway service</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down Expand Up @@ -5960,6 +5989,7 @@ null
"whenUnsatisfiable": "ScheduleAnyway"
}
],
"trafficDistribution": "",
"updateStrategy": {
"type": "RollingUpdate"
},
Expand Down Expand Up @@ -6362,7 +6392,7 @@ false
<tr>
<td>ingester.serviceAnnotations</td>
<td>object</td>
<td>Annotations for ingestor service</td>
<td>Annotations for ingester service</td>
<td><pre lang="json">
{}
</pre>
Expand All @@ -6371,7 +6401,7 @@ false
<tr>
<td>ingester.serviceLabels</td>
<td>object</td>
<td>Labels for ingestor service</td>
<td>Labels for ingester service</td>
<td><pre lang="json">
{}
</pre>
Expand All @@ -6380,7 +6410,7 @@ false
<tr>
<td>ingester.serviceType</td>
<td>string</td>
<td>Service type for ingestor service</td>
<td>Service type for ingester service</td>
<td><pre lang="json">
"ClusterIP"
</pre>
Expand Down Expand Up @@ -6411,6 +6441,15 @@ false
<td><pre lang="">
Defaults to allow skew no more than 1 node
</pre>
</td>
</tr>
<tr>
<td>ingester.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution for ingester service</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down Expand Up @@ -7174,6 +7213,15 @@ null
"http_server_write_timeout": "600s"
}
</pre>
</td>
</tr>
<tr>
<td>loki.service.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution for services Ref: https://kubernetes.io/docs/concepts/services-networking/service/#traffic-distribution</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down Expand Up @@ -9729,7 +9777,8 @@ null
"topologyKey": "kubernetes.io/hostname",
"whenUnsatisfiable": "ScheduleAnyway"
}
]
],
"trafficDistribution": ""
}
</pre>
</td>
Expand Down Expand Up @@ -10094,6 +10143,15 @@ null
<td><pre lang="">
Defaults to allow skew no more then 1 node
</pre>
</td>
</tr>
<tr>
<td>querier.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution for querier service</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down Expand Up @@ -10164,7 +10222,8 @@ Defaults to allow skew no more then 1 node
"serviceType": "ClusterIP",
"terminationGracePeriodSeconds": 30,
"tolerations": [],
"topologySpreadConstraints": []
"topologySpreadConstraints": [],
"trafficDistribution": ""
}
</pre>
</td>
Expand Down Expand Up @@ -10522,6 +10581,15 @@ null
<td><pre lang="json">
[]
</pre>
</td>
</tr>
<tr>
<td>queryFrontend.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution for query-frontend service</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down Expand Up @@ -10575,7 +10643,8 @@ null
"serviceLabels": {},
"terminationGracePeriodSeconds": 30,
"tolerations": [],
"topologySpreadConstraints": []
"topologySpreadConstraints": [],
"trafficDistribution": ""
}
</pre>
</td>
Expand Down Expand Up @@ -10823,6 +10892,15 @@ null
<td><pre lang="json">
[]
</pre>
</td>
</tr>
<tr>
<td>queryScheduler.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution for query-scheduler service</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down Expand Up @@ -10940,6 +11018,7 @@ false
"service": {
"annotations": {},
"labels": {},
"trafficDistribution": "",
"type": "ClusterIP"
},
"targetModule": "read",
Expand Down Expand Up @@ -11329,6 +11408,15 @@ null
<td><pre lang="json">
{}
</pre>
</td>
</tr>
<tr>
<td>read.service.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution for read service</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down Expand Up @@ -12820,6 +12908,15 @@ null
<td><pre lang="json">
{}
</pre>
</td>
</tr>
<tr>
<td>singleBinary.service.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution single binary Service</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down Expand Up @@ -13702,6 +13799,15 @@ null
<td><pre lang="json">
{}
</pre>
</td>
</tr>
<tr>
<td>write.service.trafficDistribution</td>
<td>string</td>
<td>trafficDistribution for write service</td>
<td><pre lang="json">
""
</pre>
</td>
</tr>
<tr>
Expand Down
1 change: 1 addition & 0 deletions production/helm/loki/CHANGELOG.md
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Expand Up @@ -46,6 +46,7 @@ Entries should include a reference to the pull request that introduced the chang
- [CHANGE] Changed version of Grafana Loki to 3.5.7.
- [FEATURE] Allow auto-resizing the volume by recreating the StatefulSet. [#19217](https://github.com/grafana/loki/pull/19217).
- [BUGFIX] Add single-binary component to the podSelector. [#19229](https://github.com/grafana/loki/pull/19229).
- [ENHANCEMENT] Added `trafficDistribution` configuration option to backend, compactor, distributor, gateway, index-gateway, ingester, querier, query-frontend, query-scheduler,read and write services to enable same-zone traffic routing. #19557

## 6.43.0

Expand Down
3 changes: 3 additions & 0 deletions production/helm/loki/templates/backend/service-backend.yaml
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Expand Up @@ -34,4 +34,7 @@ spec:
protocol: TCP
selector:
{{- include "loki.backendSelectorLabels" . | nindent 4 }}
{{- with .Values.backend.service.trafficDistribution | default .Values.loki.service.trafficDistribution }}
trafficDistribution: {{ . }}
{{- end }}
{{- end }}
4 changes: 2 additions & 2 deletions production/helm/loki/templates/distributor/service-distributor.yaml
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Expand Up @@ -33,7 +33,7 @@ spec:
{{- end }}
selector:
{{- include "loki.distributorSelectorLabels" . | nindent 4 }}
{{- if .Values.distributor.trafficDistribution }}
trafficDistribution: {{ .Values.distributor.trafficDistribution }}
{{- with .Values.distributor.trafficDistribution | default .Values.loki.service.trafficDistribution }}
trafficDistribution: {{ . }}
{{- end }}
{{- end -}}
3 changes: 3 additions & 0 deletions production/helm/loki/templates/gateway/service-gateway.yaml
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Expand Up @@ -40,4 +40,7 @@ spec:
protocol: TCP
selector:
{{- include "loki.gatewaySelectorLabels" . | nindent 4 }}
{{- with .Values.gateway.service.trafficDistribution | default .Values.loki.service.trafficDistribution }}
trafficDistribution: {{ . }}
{{- end }}
{{- end }}
3 changes: 3 additions & 0 deletions production/helm/loki/templates/index-gateway/service-index-gateway.yaml
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Expand Up @@ -33,4 +33,7 @@ spec:
{{- end }}
selector:
{{- include "loki.indexGatewaySelectorLabels" . | nindent 4 }}
{{- with .Values.indexGateway.trafficDistribution | default .Values.loki.service.trafficDistribution }}
trafficDistribution: {{ . }}
{{- end }}
{{- end }}
3 changes: 3 additions & 0 deletions production/helm/loki/templates/ingester/service-ingester.yaml
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Expand Up @@ -33,4 +33,7 @@ spec:
{{- end }}
selector:
{{- include "loki.ingesterSelectorLabels" . | nindent 4 }}
{{- with .Values.ingester.trafficDistribution | default .Values.loki.service.trafficDistribution }}
trafficDistribution: {{ . }}
{{- end }}
{{- end -}}
3 changes: 3 additions & 0 deletions production/helm/loki/templates/querier/service-querier.yaml
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Expand Up @@ -33,4 +33,7 @@ spec:
{{- end }}
selector:
{{- include "loki.querierSelectorLabels" . | nindent 4 }}
{{- with .Values.querier.trafficDistribution | default .Values.loki.service.trafficDistribution }}
trafficDistribution: {{ . }}
{{- end }}
{{- end -}}
3 changes: 3 additions & 0 deletions production/helm/loki/templates/query-frontend/service-query-frontend.yaml
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Expand Up @@ -43,4 +43,7 @@ spec:
{{- end }}
selector:
{{- include "loki.queryFrontendSelectorLabels" . | nindent 4 }}
{{- with .Values.queryFrontend.trafficDistribution | default .Values.loki.service.trafficDistribution }}
trafficDistribution: {{ . }}
{{- end }}
{{- end -}}
3 changes: 3 additions & 0 deletions production/helm/loki/templates/query-scheduler/service-query-scheduler.yaml
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Expand Up @@ -35,4 +35,7 @@ spec:
{{- end }}
selector:
{{- include "loki.querySchedulerSelectorLabels" . | nindent 4 }}
{{- with .Values.queryScheduler.trafficDistribution | default .Values.loki.service.trafficDistribution }}
trafficDistribution: {{ . }}
{{- end }}
{{- end }}
3 changes: 3 additions & 0 deletions production/helm/loki/templates/read/service-read.yaml
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Expand Up @@ -34,4 +34,7 @@ spec:
protocol: TCP
selector:
{{- include "loki.readSelectorLabels" . | nindent 4 }}
{{- with .Values.read.service.trafficDistribution | default .Values.loki.service.trafficDistribution }}
trafficDistribution: {{ . }}
{{- end }}
{{- end }}
3 changes: 3 additions & 0 deletions production/helm/loki/templates/write/service-write.yaml
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Expand Up @@ -34,4 +34,7 @@ spec:
protocol: TCP
selector:
{{- include "loki.writeSelectorLabels" . | nindent 4 }}
{{- with .Values.write.service.trafficDistribution | default .Values.loki.service.trafficDistribution }}
trafficDistribution: {{ . }}
{{- end }}
{{- end }}
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