Upgrade process on active cluster

Klas

New Member
Sep 2, 2014
11
0
1
Hello,

We are currently planning on upgrading from 3.2 to 3.3.

We have never performed a live update before so I want to make sure I don't make any mistakes and thus destroying the cluster so it needs to be restored.

Basically, my thought is this:
Empty a node of running vms.
Upgrade it, with reboot.
Empty the next node, upgrade it with reboot.
And so forth.

But what I'm curious about is whether there will be any issues with running a couple of nodes on an old version and a couple on the fully updated.

In short, do I need to this as planned maintenance or can I do it without losing uptime of the VMs?
 

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