[Pacemaker] version compatility

[Andrew Beekhof]

On 17/07/2013, at 6:47 PM, K Mehta <kiranmehta1981 at gmail.com> wrote:

> Andrew,
>  I am using centos 6.2 and RHEL 6.2. Currently i have setup with whatever comes with distribution.
> 
>  1. Are the components (pacemaker, cman, corosync) forward and backward compatible with each other..just in cases where i want  to continue with current stable version of a component and upgrade components which have some known critical fixes in new  versions.

Yes.

Although you might want to read: 

   http://blog.clusterlabs.org/blog/2013/mixing-pacemaker-versions/

and

   http://blog.clusterlabs.org/blog/2013/pacemaker-on-rhel6-dot-4/

> 
>  2. Are there versions of these components which are definitely not expected to work together ?

Versions of pacemaker < 1.1.6 did not support cman and I accidentally broke compatibility for plugin-based clusters in 6.4:

   http://www.mail-archive.com/pacemaker@oss.clusterlabs.org/msg16173.html

> 
> Regards,
>  kiran
> 
> 
> On Wed, Jul 17, 2013 at 10:23 AM, Andrew Beekhof <andrew at beekhof.net> wrote:
> 
> On 16/07/2013, at 11:59 PM, K Mehta <kiranmehta1981 at gmail.com> wrote:
> 
> > Hi,
> >  Where can I find information about which versions of pacemaker, cman and corosync are compatible with each other ?
> 
> I don't think such a document exists.
> What distro are you using? The best option is usually to use whatever they provide.
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