[DRBD-user] Adding a third drbd node

Adam Taylor adam.taylor at wml.co.nz
Tue Jul 21 23:04:11 CEST 2009

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Thanks for the advice :) That sounds like good method/logic for the upgrade.

The third node will be at a remote location (ISP Datacenter).  Has anyone
had any experience with 8.3?  Is there any noticeable difference apart from
the stacking ability?


From: drbd-user-bounces at lists.linbit.com
[mailto:drbd-user-bounces at lists.linbit.com] On Behalf Of
Simon.Bartlet at jhc.co.uk
Sent: Tuesday, July 21, 2009 9:47 PM
Cc: drbd-user at lists.linbit.com
Subject: Re: [DRBD-user] Adding a third drbd node

I think you would need 8.3 and above for node stacking, also where is the
3rd node is it local or at a remote location.

As far as upgrading goes.

I would have thought this would be the best method.

node1 = Primary
node2 = Secondary

1) Stop DRBD on node2 ( Secondary ). Upgrade DRBD. Start DRBD on node2. Wait
for DRBD to resync data
2) Once data has synced. Demote node1( Current Primary ) to secondary. Bring
up node2 as your new Primary.
2) node1 is now a secondary, so your safe to stop DRBD, upgrade DBRD, bring
back online as secondary and wait for resync to occur.....

From: 	"Adam Taylor" <adam.taylor at wml.co.nz> 

To: 	<drbd-user at lists.linbit.com> 

Date: 	20/07/2009 22:09 

Subject: 	[DRBD-user] Adding a third drbd node 

Sent by: 	drbd-user-bounces at lists.linbit.com


Hi Everyone,
I currently have a two node cluster using heartbeat in a Primary/Secondary
mode.  My question is:
Is it possible to add a third node as a DR server (act as a second
secondary) using drbd version 8.2.5?  Or will I have to upgrade to 8.3?
These two servers are live at the moment and would rather not have to be
taking them offline for a version upgrade.  
However, if this is the case, is there a "sure-fire" way to upgrading
Any help would be much appreciated.
Adam Taylor  |  Engineer  |  WML Software
Unit 3c  |  14-22 Triton Drive  |  Albany  |  Auckland

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