[Linux-cluster] Documentation for cluster beginner and pacemaker vs rgmanager

[Andrew Beekhof]

On Tue, May 10, 2011 at 2:33 PM, Tomas Kouba <koubat at fzu.cz> wrote:
> Hello HA magicians,
>
> I would like to bring our services to a more reliable level and I was
> googling around some
> basic information about RH cluster suite.
> I am not quite able to answer 2 questions so I'd like to ask here:
>
> 1) What is the starting documentation that you would recommend to a linux
> administrator who would
> like to setup a HA cluster? I have found
> http://www.linuxtopia.org/online_books/rhel6/rhel_6_cluster_admin/
> is it good even though I use clone of RHEL? (Scientific Linux 6).
>
> 2) Which resource manager would you recommend? rgmanager or pacemaker?
> The following pages favor pacemaker but the documentation usually says
> rgmanager:
> http://www.spinics.net/lists/cluster/msg16401.html
> http://sources.redhat.com/cluster/wiki/RGManagerVsPacemaker

Well I'm going to say Pacemaker +
http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Clusters_from_Scratch/
But then you'd expect that since I wrote both :-)

I think its fair to say that Pacemaker is better than rgmanager, but
the stars didn't align in time for RHEL6.0 so full support wasn't an
option.  That said, you're using SL6 so community support on mailing
lists such as this one might well be sufficient.

Oh, but the cluster GUI only supports rgmanager if thats important to you.
Pacemaker does have a shiny integrated CLI though.