RE: webfarm and redhat cluster ?

[Finnur Örn Guðmundsson - TM Software Skyggnir <fog t is>]

Hi,

I have never configured anything like this but here goes ...

I would guess you could use something like MC/Serviceguard from HP running in active/active mode running with GFS checks to monitor the GFS part if you have the cash....Otherwise i dont think Redhat supplies you with a tool to do this (except for the fenching system ...if you have  fencing running on the AC or using HP servers running ILO you can use fenching to take out one of the nodes in case of a network/san failure since the GFS daemons do need to be able to interact thru network).

Just a thought ....i would not take my words for this since i havent tested this but i think this would be possible:)


Kær kveðja / Best regards,
Finnur Ö. Guðmundsson
RHCE, Linux+, MCP
System Engineer - System Operations 
fog t is

TM Software - Skyggnir
Holtasmári 1, IS- 201 Kópavogur, Iceland
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-----Original Message-----
From: nahant-list-bounces redhat com [mailto:nahant-list-bounces redhat com] On Behalf Of FM
Sent: 24. apríl 2006 20:31
To: nahant-list redhat com
Subject: Re: webfarm and redhat cluster ?

thanks for the reply,
The question is more : is-it the way to create a cluster using gfs + redhat cluster sutie ?


Jussi Silvennoinen wrote:
>> Hello,
>> I think I have a misunderstanding  with Redhat cluster suite and webFarm.
>>
>> I'm testing this scenario :
>> 2 server as load balancer (red hat + piranha)
>> 2 WEB servers behind the balancer connected to a GFS file system.
>> My goal is to increase the uptime of my websites and to be able to 
>> decrease the servers load by adding a new one if necessary.
>>
>> At first,  I though that I need to create a cluster for the 2 web 
>> servers. But in this scenario, I cannot have load balancing between 
>> the
>> 2 web servers.
>>
>> So, am I missing something, or my option here is to have 1 load 
>> balancer cluster active/passive (for fail over) and my 2 web servers 
>> with a connection to the GFS file system. So no cluster with those server ?
>>
>> The problem with that setup is that piranha will see if a server 
>> fails or if httpd fails but not if the GFS fails.
>>     
>
> Why not give some NFS-filer a try and use it for shared storage 
> instead of GFS? Often a much simpler setup to build and maintain over the years.
>
>   

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