With central management, this is automatic. You can log in to the GUI from any node in the cluster. Simply log in to the node that is not down. Once the down node comes back up it will sync autmatically with whatever node has the newest configuration.
Edit: Are you perhaps referring to Proxy HA? Is it that the backup node is not taking over the VIP/Traffic when the director goes down? Or is there some other problem
Well my problem is when the Director Web Gateway goes down, I lost the others nodes GUI. I just can't access the others node, the only access I have is by SSH.
I don't want to configure Porxy HA, I just want that i can access my others node when the primary goes down.
Thanks a lot for your support.
Does the GUI still think that there's a management session attached to the previous node you were using for central management?
If that's the problem you should be able to SSH into the box that you want to use and issue the command:
service mwg-gui restart
After that, you should be able to connect to that node and manage it and the rest from there.
thanks a lot for for your help