Netdata: Fix pve_check for 8 (#7392)

Author: MickLesk

tools/addon/netdata.sh

@@ -41,39 +41,37 @@ function msg_ok() {
 
 function msg_error() { echo -e "${RD}✗ $1${CL}"; }
 
+# This function checks the version of Proxmox Virtual Environment (PVE) and exits if the version is not supported.
+# Supported: Proxmox VE 8.0.x – 8.9.x and 9.0 (NOT 9.1+)
 pve_check() {
-  if ! command -v pveversion >/dev/null 2>&1; then
-    msg_error "This script can only be run on a Proxmox VE host."
-    exit 1
-  fi
-
   local PVE_VER
   PVE_VER="$(pveversion | awk -F'/' '{print $2}' | awk -F'-' '{print $1}')"
 
-  # Proxmox VE 8.x: allow 8.0 – 8.9
-  if [[ "$PVE_VER" =~ ^9\.([0-9]+)(\.[0-9]+)?$ ]]; then
+  # Check for Proxmox VE 8.x: allow 8.0–8.9
+  if [[ "$PVE_VER" =~ ^8\.([0-9]+) ]]; then
     local MINOR="${BASH_REMATCH[1]}"
-    if ((MINOR != 0)); then
-      msg_error "Unsupported Proxmox VE version: $PVE_VER"
-      msg_error "Supported versions: 8.0 – 8.9 or 9.0.x"
+    if ((MINOR < 0 || MINOR > 9)); then
+      msg_error "This version of Proxmox VE is not supported."
+      msg_error "Supported: Proxmox VE version 8.0 – 8.9"
       exit 1
     fi
     return 0
   fi
 
-  # Proxmox VE 9.x: allow only 9.0
-  if [[ "$PVE_VER" =~ ^9\.([0-9]+)$ ]]; then
+  # Check for Proxmox VE 9.x: allow ONLY 9.0
+  if [[ "$PVE_VER" =~ ^9\.([0-9]+) ]]; then
     local MINOR="${BASH_REMATCH[1]}"
     if ((MINOR != 0)); then
-      msg_error "Unsupported Proxmox VE version: $PVE_VER"
-      msg_error "Supported versions: 8.0 – 8.9 or 9.0"
+      msg_error "This version of Proxmox VE is not yet supported."
+      msg_error "Supported: Proxmox VE version 9.0"
       exit 1
     fi
     return 0
   fi
 
-  msg_error "Unsupported Proxmox VE version: $PVE_VER"
-  msg_error "Supported versions: 8.0 – 8.9 or 9.0"
+  # All other unsupported versions
+  msg_error "This version of Proxmox VE is not supported."
+  msg_error "Supported versions: Proxmox VE 8.0 – 8.x or 9.0"
   exit 1
 }