feat(helm): Add startupProbe to index-gateway

Adds a configurable `startupProbe` to the index-gateway container in the
index-gateway pods.

Signed-off-by: Andreas Lindhé <[email protected]>

Author: lindhe

production/helm/loki/CHANGELOG.md

@@ -20,6 +20,8 @@ Entries should include a reference to the pull request that introduced the chang
 - [ENHANCEMENT] Add support for configuring `volumeAttributesClassName` for `volumeClaimTemplates`. [#19719](https://github.com/grafana/loki/pull/19719)
 - [BUGFIX] Don't fail for missing bucket name, if minio is enabled. [#19745](https://github.com/grafana/loki/pull/19745)
 - [BUGFIX] Add startupProbe to read pod [#19708](https://github.com/grafana/loki/pull/19708)
+- [ENHANCEMENT] Add a configurable `startupProbe` to the index-gateway container in the
+index-gateway pods [#20075](https://github.com/grafana/loki/pull/20075)
 
 ## 6.46.0
 

production/helm/loki/templates/index-gateway/statefulset-index-gateway.yaml

@@ -114,6 +114,10 @@ spec:
           readinessProbe:
             {{- toYaml . | nindent 12 }}
           {{- end }}
+          {{- with .Values.loki.startupProbe }}
+          startupProbe:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
           volumeMounts:
             - name: config
               mountPath: /etc/loki/config