Helm: Add podlabels to backend (#8398)

Co-authored-by: Travis Patterson <travis.patterson@grafana.com>

docs/sources/installation/helm/reference.md

@@ -173,6 +173,15 @@ null
 			<td><pre lang="json">
 {}
 </pre>
+</td>
+		</tr>
+		<tr>
+			<td>backend.podLabels</td>
+			<td>object</td>
+			<td>Additional labels for each `backend` pod</td>
+			<td><pre lang="json">
+{}
+</pre>
 </td>
 		</tr>
 		<tr>

production/helm/loki/templates/backend/statefulset-backend.yaml

@@ -40,6 +40,12 @@ spec:
         {{- end }}
       labels:
         {{- include "loki.backendSelectorLabels" . | nindent 8 }}
+        {{- with .Values.loki.podLabels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+        {{- with .Values.backend.podLabels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
         {{- with .Values.backend.selectorLabels }}
         {{- tpl (toYaml .) $ | nindent 8 }}
         {{- end }}

production/helm/loki/values.yaml

@@ -870,6 +870,8 @@ backend:
   priorityClassName: null
   # -- Annotations for backend pods
   podAnnotations: {}
+  # -- Additional labels for each `backend` pod
+  podLabels: {}
   # -- Additional selector labels for each `backend` pod
   selectorLabels: {}
   # -- Labels for ingester service