[DRBD-user] Same configuration across 3-node cluster

Lars Ellenberg lars.ellenberg at linbit.com
Sat Aug 23 01:47:26 CEST 2008

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

On Fri, Aug 22, 2008 at 04:02:57PM -0700, Casey Allen Shobe wrote:
> On Aug 22, 2008, at 12:14 AM, Andrew McGill wrote:
>> This error occurs even when trying to bring up other resources that  
>> are
>> present for the host.  It looks like things work quite nicely with a  
>> custom
>> drbd.conf for each site which simply excludes resources that are  
>> irrelevant
>> to the current host.
>> Is there an option to make this work - using a single config file?   
>> Should I
>> even be trying this?
> I believe this answers your question:
> On Aug 22, 2008, at 9:54 AM, Lars Ellenberg wrote:
>> though you cannot have the same drbd.conf onm all nodes now,
>> due to too much paranoia on my part...
> That said, I think that this is not too much paranoia, I think it is  
> proper design.  What I feel would be better is for drbd.conf to support 
> an include directive.  Then you could put each resource into it's own 
> include file in a directory, and these would be common across all nodes.  
> The main drbd.conf on each host would have two include directives each 
> for the appropriate resources.  If you thought you might change the 
> common part and want to ensure it is synchronous easier, you could move 
> that into a separate common include file as well.  So it might come out 
> looking like this:
> host A drbd.conf:
> include drbd.d/common.conf
> include drbd.d/resource1.conf
> include drbd.d/resource2.conf
> host B drbd.conf:
> include drbd.d/common.conf
> include drbd.d/resource1.conf
> include drbd.d/resource3.conf
> host C drbd.conf:
> include drbd.d/common.conf
> include drbd.d/resource2.conf
> include drbd.d/resource3.conf
> And then drbd.d could be kept identical between all servers and updated 
> as necessary.
> Lars, what do you think of this idea?

we have had that idea before...
patches accepted


: Lars Ellenberg                
: LINBIT HA-Solutions GmbH
: DRBD®/HA support and consulting    http://www.linbit.com

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