[Linux-HA] doubts about using Heartbeat 2 or (Heartbeat 1 and (ldirector or keepalived))

[Pau Aliagas]

Hi.

I'm trying to design a Linux HA cluster with a bunch of servers and I have 
a few doubts.

First doubt is if I should configure Heartbeat 1 or Heartbeat 2. Whilst 
HB2 seems the obvious choice, there is far less documentation and 
examples, but my main doubt arises when I read that with HB2 there is no 
need for ldirector or keepalived, as the best examples I've found are 
precisely the ones with HA1 and ldirector or keepalived, adn they seem 
much easier toi implement than HB2. Any recommendations on how to start 
with HB2 to overcome this?

IF I take the HB2 path, which I would prefer, I see that I can start, stop 
and monitor services in different servers/groups. But, how is this 
balanced? Should I configure IPVS on each server? Which is the best way?
AFAICS, HB2 main gola is to keep the service running in a virtual IP in 
the cluster, but what if I want to load balance web servers and RO mysql 
instances? How should I do it?

Thanks very nuch for your help, I've been reading the documentation for 
quite a few days and testing configurations in a development network and I 
cannot find a definate answer to my questions, sorry if they are too 
basic.


--
Pau