diff --git a/README.md b/README.md
index c1e7b77..782b612 100644
--- a/README.md
+++ b/README.md
@@ -595,6 +595,7 @@ Download values file for prometheus-stack helm chart and replace any macros with
 * %MASTER_NODE_IPV4_ADDR% -> IPv4 address of your cluster master node  
 * %PVC_STORAGECLASS% -> your storageclass for persistent storage  
 * %PVC_STORAGE_SIZE% -> size of persistent storage, e.g. 4Gi
+* %PVC_STORAGE_SIZE_GRAFANA% -> size of persistent storage of grafana, e.g. 1Gi
 * %SMTP_HOST% 
 * %SMTP_USER%
 * %SMTP_PASSWORD%
@@ -911,4 +912,4 @@ kubectl get namespace "stucked-namespace" -o json \
 ```
 
 ## Deleting stuck CRDs <a name="user-content-ts-delete-stuck-crd"></a>
-https://github.com/kubernetes/kubernetes/issues/60538#issuecomment-369099998
\ No newline at end of file
+https://github.com/kubernetes/kubernetes/issues/60538#issuecomment-369099998
diff --git a/prom-stack-values.yaml b/prom-stack-values.yaml
index 0ab9ebd..959e856 100644
--- a/prom-stack-values.yaml
+++ b/prom-stack-values.yaml
@@ -713,6 +713,10 @@ alertmanager:
 grafana:
   enabled: true
   namespaceOverride: ""
+
+  # https://github.com/prometheus-community/helm-charts/issues/436#issuecomment-867472963
+  deploymentStrategy:
+    type: Recreate
   
   # https://github.com/prometheus-community/helm-charts/issues/436#issuecomment-740664621
   persistence:
@@ -727,6 +731,8 @@ grafana:
 
   # h%ttps://github.com/prometheus-community/helm-charts/issues/1969#issuecomment-1119567241
   grafana.ini:
+   server:
+      root_url: 'https://%SERVICE_FQDN%/'
     smtp:
       enabled: true
       # SMTP config follows here as per