[DRBD-user] 4-way replication

Andreas Kurz andreas at hastexo.com
Fri Jan 13 15:27:24 CET 2012


Hello,

On 01/13/2012 12:56 PM, Benjamin Knoth wrote:
> Hi,
> 
> i will create a 4 node replication with DRBD.
> I read also the documentation.
> I understand also the configuration of a 3 way replication, but how do i
> need to config the 4 way replication?
> 
> I configured 2 2way resources successfully and now i need to config the
> stacked resource.

Have a look at:

http://www.drbd.org/users-guide-8.3/s-pacemaker-stacked-resources.html#s-pacemaker-stacked-dr

... a picture says more than 1000 words ;-)

> 
> resource r0-U {
> {
> protocol A;
> }
> stacked-on-top-of r0 {
> device
> /dev/drbd10;
> address
> 192.168.42.1:7788;
> }
> on charlie {
> 		device /dev/drbd10;
> 		disk /dev/hda6;
> 		address 192.168.42.2:7788; # Public IP of the backup
> 		meta-disk internal;
> }
> 
> }
> 
> 
> Is the solution to define on server alice and bob and charlie and daisy
> a lower level resource with protoc C and than one stacked resource where
> directly the stacked resource from alice and bob communicate with the
> stacked resource of charlie and daisy like this configuration?

Yes, configure the replication between two stacked resources.

> 
> resource stacked {
>         protocol        A;
>         stacked-on-top-of r0 {
>         device /dev/drbd10;
>         address 192.168.:7788;
> }
>         stacked-on-top-of r0 {
>                 device /dev/drbd10;
>                 address 134.76.28.188:7788;
>         }
> }
> 
> Best regards

Regards,
Andreas

-- 
Need help with DRBD?
http://www.hastexo.com/now


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