[DRBD-user] Adding a third drbd node

Simon.Bartlet at jhc.co.uk Simon.Bartlet at jhc.co.uk
Tue Jul 21 11:46:55 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.

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.....

"Adam Taylor" <adam.taylor at wml.co.nz>
<drbd-user at lists.linbit.com>
20/07/2009 22:09
[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

P.        +64 9 477 4555   |  F.    +64 9 478 6926
DDI.     +64 9 477 6375   |  MOB.    +64 21 621 519 
E.         adam.taylor at wml.co.nz
W.        www.wml.co.nz  |  www.compose.co.nz

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