Update es-statefulset.yaml

change replicas to 1

efk-7.10.2/es-statefulset.yaml

@@ -54,7 +54,7 @@ metadata:
     addonmanager.kubernetes.io/mode: Reconcile
 spec:
   serviceName: elasticsearch-logging
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       k8s-app: elasticsearch-logging