What is your goal here?
Mnode is used for two reasons mainly:-
1) Configuring the cluster to report in Active IQ , which can be done using below commands.
sudo ./manage-collector.py --set-mvip 172.28.1.202 --set-username admin --set-password
sudo restart sfcollector
2) To Upgrade the cluster in which we point the MVIP and mnode in sfinstall command. To upgrade the cluster you can open a support ticket with NetApp support.
- Pranay Gupta
NetApp Techical Support.