diff --git a/docs/proxmox/tips-and-tricks.md b/docs/proxmox/tips-and-tricks.md
index 9730f54..0b4051c 100644
--- a/docs/proxmox/tips-and-tricks.md
+++ b/docs/proxmox/tips-and-tricks.md
@@ -1,5 +1,19 @@
 # Tips and Trics
 
+## Hostname & FQDN
+
+Make sure the hostname and fqdn are properly set. If this is not set properly this might result in performance
+degradation or ghost services; for example Ceph Monitor, Manager and Metadata Servers.
+
+```bash
+$ hostname
+pve0
+$ hostname -f
+pve0.siempie.local
+$ hostname -d
+siempie.local
+```
+
 ## Maintenance mode
 
 ```shell