On 05/21/2013 11:59 PM, Deepak Yadav wrote:
> Dear Team
>
>
> I want  to configure the DRBD and Heartbeat on RHEL-6 OS but I am not able
> to find out exact package of heartbeat for the installation.
> Please help me out to resolve this issue !

Heartbeat is deprecated. It's not been developed in some time (though 
Linbit supports existing installs).

You have two options here;

1. Red Hat Cluster Suite (corosync + cman + rgmanager)

2. Pacemaker (corosync + pacemaker)

There are pros and cons to both, and you need to choose which is best 
for you.

1. Is the only* officially supported (by Red Hat) HA stack. This means 
that, through the life of RHEL (and thus CentOS), upgrades to the OS 
will never break your cluster.

2. Pacemaker is the future of HA clustering. It is expected that, in 
RHEL 7, Pacemaker will replace RHCS. So there is a strong argument to 
start with pacemaker now.

The main problem that might push you away from Pacemaker (and what keeps 
me personally on RHCS) is that Pacemaker is in "Tech Preview" mode in 
RHEL. What this means is two fold;

a) The pacemaker package does not get updated except with y-stream 
releases (6.0 -> 6.1 -> 6.2 -> etc). Even if bugs are found between 
releases, no updated package will be shipped.

b) Each update to the 'pacemaker' package may or may not be compatible 
with previous releases. For example, the update from 6.3 to 6.4 caused 
compatibility problems.

Many people run production pacemaker clusters, but you need to take your 
time to learn how it works. You will also want to make sure that you 
test updates before applying them to production machines.

*Personally*, I stick to rhcs. That said, the more people who use 
pacemaker, the better it will get.

It's really up to you.

Hope this helps shed light.

digimer

* There are rumours that certain specific configurations of pacemaker 
can be supported by Red Hat.

-- 
Digimer
Papers and Projects: https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a person without 
access to education?
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