Mailing List Archive: Linux-HA: Users

2 Server HA Setup

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jangita at jangita

Sep 3, 2010, 2:55 AM

Post #1 of 3 (236 views)
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2 Server HA Setup

Hi List,

I want a scenario where I have two servers that appear as one server
(one IP) to the outside world, with both servers having *exactly* the
same data and services. So in case one server falls into a pond somehow,
I woun't even loose a ping from my clints. I've used debian linux alot
for my server backends, so I pretty much know my way around linux (not
GUI though).

Any help from the experts? Anyone?

Thanks,

--
Jangita | +256 76 91 8383 | Y! & MSN: jangita [at] yahoo
Skype: jangita | GTalk: jangita.nyagudi [at] gmail
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great_guy001 at yahoo

Sep 3, 2010, 8:32 AM

Post #2 of 3 (235 views)
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Re: 2 Server HA Setup [In reply to]

Hi Jangita, you can configure linux HA cluster with pacemaker crm. I think it will best meet your requirement.Take a look at this link.
http://www.clusterlabs.org/wiki/Documentation
Thanks,gintu

--- On Fri, 3/9/10, Jangita <jangita [at] jangita> wrote:

From: Jangita <jangita [at] jangita>
Subject: [Linux-HA] 2 Server HA Setup
To: linux-ha [at] lists
Date: Friday, 3 September, 2010, 5:55 AM

Hi List,

I want a scenario where I have two servers that appear as one server
(one IP) to the outside world, with both servers having *exactly* the
same data and services. So in case one server falls into a pond somehow,
I woun't even loose a ping from my clints. I've used debian linux alot
for my server backends, so I pretty much know my way around linux (not
GUI though).

Any help from the experts? Anyone?

Thanks,

--
Jangita | +256 76 91 8383 | Y! & MSN: jangita [at] yahoo
Skype: jangita | GTalk: jangita.nyagudi [at] gmail
_______________________________________________
Linux-HA mailing list
Linux-HA [at] lists
http://lists.linux-ha.org/mailman/listinfo/linux-ha
See also: http://linux-ha.org/ReportingProblems

_______________________________________________
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See also: http://linux-ha.org/ReportingProblems

dmaziuk at bmrb

Sep 3, 2010, 9:55 AM

Post #3 of 3 (239 views)
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Re: 2 Server HA Setup [In reply to]

Jangita wrote:
> Hi List,
>
> I want a scenario where I have two servers that appear as one server
> (one IP) to the outside world, with both servers having *exactly* the
> same data and services. So in case one server falls into a pond somehow,
> I woun't even loose a ping from my clints.

You will lose pings because it takes time to fail over to the other
server. Expect it to be longer than ping's timeout.

You will also lose stateful connections, e.g. servlet - applet, imap,
etc., unless your services know how to replicate state to the other server.

Dima
--
Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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