diff --git a/adhoc-config/lets.yaml b/adhoc-config/lets.yaml
deleted file mode 100644
index c270a78..0000000
--- a/adhoc-config/lets.yaml
+++ /dev/null
@@ -1,16 +0,0 @@
-apiVersion: cert-manager.io/v1
-kind: ClusterIssuer
-metadata:
-  name: letsencrypt-prod
-  labels:
-    name: letsencrypt-prod
-spec:
-  acme:
-    email: me@toozhao.com
-    privateKeySecretRef:
-      name: letsencrypt-prod
-    server: https://acme-v02.api.letsencrypt.org/directory
-    solvers:
-    - http01:
-        ingress:
-          class: nginx
diff --git a/recovery.sh b/recovery.sh
index f5b5f1b..50d1009 100644
--- a/recovery.sh
+++ b/recovery.sh
@@ -245,3 +245,8 @@ git reset --hard HEAD@{1}
 # enable vmware ssh through UI and then Find large files
 df -h
 find /vmfs/volumes/tiplus-ssd/ -type f -size +1000000k -exec ls -lh {} \;
+
+
+# grafana recover admin password
+
+grafana-cli admin reset-admin-password xxxx