[Pacemaker] The main road of the cluster stack evolution

[Andrew Beekhof]

On 11/06/2013, at 1:26 AM, Халезов Иван <i.khalezov at rts.ru> wrote:

> Hello everyone!
> 
> I would like to ask a few questions about the main road of the cluster stack evolution.
> 
> 1) The RedHat company is planning to drop corosync support and wants to switch to CMAN.
> ( http://www.gossamer-threads.com/lists/linuxha/pacemaker/84662 )

No.  That information is specific to RHEL6 and in any case, CMAN is just a plugin for corosync.

> 
> What do you think the main trend is? What is the most popular and better supported solution? Corosync, CMAN or something else?
> What cluster engine is better for Pacemaker at the moment? And what could be the best solution in 2-3 years?
> 
> 2) What is the best tool for cluster management: crm, pcs or something else?
> 
> Redhat switches to pcs and drops crm, but SUSE prefers crmsh tool.
> 
> Why? What tool will you advice to use?
> 
> 3) What version of pacemaker should I prefer for using on RedHat 6.3 (or 6.4) ?
> 
> The version from the vendor (Pacemaker 1.1.7 for RedHat 6.3 and Pacemaker 1.1.8 for RedHat 6.4) or the upstream version from Github?

1.1.10-rc4

> 
> I usually prefer software versions coming from the distribution, because I hope they are well-tested and supported by the vendor.
> But, as I know, Pacemaker is a teсhnology preview in RedHat 6, so they don't response for it stability.
> Also, all the same, I have to rebuild Redhat src.rpm package ( for adding corosync 2.3 support into pacemaker)
> 
> 
> With best regards,
> Ivan Khalezov
> 
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