fix: update check script to use pgrep

site/profiles/templates/proxmox/check_ceph_service.sh.erb

@@ -3,8 +3,5 @@ if [ $# -eq 0 ]; then
   echo "No service specified"
   exit 1
 fi
-if systemctl is-active --quiet $1; then
-  exit 0
-else
-  exit 2
-fi
+
+pgrep -x ceph-${1} > /dev/null 2>&1 || exit 1