Upgrade from 2.1 to 2.3

[Exilim]

Hello,

what must I do that I can update Proxmox from Version 2.1 to Version 2.3 ?
Actually I have a cluster with 3 Servers (Version 2.1) and a new which have Version 2.3

Now I want to update the 3 Servers to 2.3 that I can put the new one in the same cluster

Regards

 

[tom]

see http://pve.proxmox.com/wiki/Downloads#Update_a_running_Proxmox_Virtual_Environment_2.x_to_latest_2.3