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feat(helm): Add ability to toggle grpclb port for query frontend service #19609

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Merged
merged 2 commits into from
Nov 4, 2025
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Merged

feat(helm): Add ability to toggle grpclb port for query frontend service #19609

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b888b9b
feat(helm): Add ability to remove grpclb port from query frontend ser…
GarnerBot Oct 27, 2025
f24b6f3
Merge branch 'main' into helm-query-frontend-lb-optional
GarnerBot Oct 31, 2025
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14 changes: 14 additions & 0 deletions docs/sources/setup/install/helm/reference.md
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Expand Up @@ -10132,6 +10132,9 @@ Defaults to allow skew no more then 1 node
"tag": null
},
"initContainers": [],
"loadBalancer": {
"enabled": true
},
"maxUnavailable": null,
"nodeSelector": {},
"podAnnotations": {},
Expand Down Expand Up @@ -10374,6 +10377,17 @@ null
<td><pre lang="json">
[]
</pre>
</td>
</tr>
<tr>
<td>queryFrontend.loadBalancer</td>
<td>object</td>
<td>Enable load balancer port for query-frontend</td>
<td><pre lang="json">
{
"enabled": true
}
</pre>
</td>
</tr>
<tr>
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6 changes: 4 additions & 2 deletions production/helm/loki/CHANGELOG.md
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Expand Up @@ -13,6 +13,8 @@ Entries should include a reference to the pull request that introduced the chang

## Unreleased

- [FEATURE] Add load balancer port to query-frontend service. [#19462](https://github.com/grafana/loki/pull/19462)

## 6.45.2

- [BUGFIX] Fix incorrect GEL version in the chart and reference.
Expand Down Expand Up @@ -51,7 +53,7 @@ Entries should include a reference to the pull request that introduced the chang

**NOTE:** While the Loki chart does not currently use these CRDs, we wanted to note this requirement for the [rollout-operator](https://github.com/grafana/helm-charts/tree/main/charts/rollout-operator#upgrade-of-grafana-rollout-operator).
Starting with v0.33.0 of the rollout-operator chart, the rollout-operator webhooks are enabled. See https://github.com/grafana/rollout-operator/#webhooks.
Before upgrading to this version, make sure that the CustomResourceDefinitions (CRDs) in the crds directory are applied to your cluster. Manually applying these CRDs is only required if upgrading from a chart <= v0.32.0.
Before upgrading to this version, make sure that the CustomResourceDefinitions (CRDs) in the crds directory are applied to your cluster. Manually applying these CRDs is only required if upgrading from a chart <= v0.32.0.

- [BUGFIX] Use strings instead of integers for ports in CiliumNetworkPolicies [#19252](https://github.com/grafana/loki/pull/19252)
- [FEATURE] Add replicas to loki-canary deployment [#190095](https://github.com/grafana/loki/pull/19095)
Expand Down Expand Up @@ -86,7 +88,7 @@ Before upgrading to this version, make sure that the CustomResourceDefinitions (
## 6.38.0

**NOTE:** While the Loki chart does not currently use these CRDs, we wanted to note this requirement for the [rollout-operator](https://github.com/grafana/helm-charts/tree/main/charts/rollout-operator#upgrade-of-grafana-rollout-operator).
Before upgrading to v0.32.0, make sure that the CustomResourceDefinitions (CRDs) in the `crds` directory are applied to your cluster. Manually applying these CRDs is only required if upgrading from a chart <= v0.32.0.
Before upgrading to v0.32.0, make sure that the CustomResourceDefinitions (CRDs) in the `crds` directory are applied to your cluster. Manually applying these CRDs is only required if upgrading from a chart <= v0.32.0.

- un-deprecate all features in `monitoring` block except grafana-agent-operator [#19001](https://github.com/grafana/loki/pull/19001)
- [FEATURE] Make access modes for persistence on all PVCs and StatefulSets editable [#13474](https://github.com/grafana/loki/pull/13474)
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2 changes: 2 additions & 0 deletions production/helm/loki/templates/query-frontend/service-query-frontend.yaml
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Expand Up @@ -32,13 +32,15 @@ spec:
{{- if .Values.queryFrontend.appProtocol.grpc }}
appProtocol: {{ .Values.queryFrontend.appProtocol.grpc }}
{{- end }}
{{- if .Values.queryFrontend.loadBalancer.enabled }}
- name: grpclb
port: 9096
targetPort: grpc
protocol: TCP
{{- if .Values.queryFrontend.appProtocol.grpc }}
appProtocol: {{ .Values.queryFrontend.appProtocol.grpc }}
{{- end }}
{{- end }}
selector:
{{- include "loki.queryFrontendSelectorLabels" . | nindent 4 }}
{{- end -}}
3 changes: 3 additions & 0 deletions production/helm/loki/values.yaml
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Expand Up @@ -2472,6 +2472,9 @@ queryFrontend:
appProtocol:
# -- Set the optional grpc service protocol. Ex: "grpc", "http2" or "https"
grpc: ""
# -- Enable load balancer port for query-frontend
loadBalancer:
enabled: true
# -- Configuration for the query-scheduler
queryScheduler:
# -- Number of replicas for the query-scheduler.
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