RE: About cluster deployments.

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I just tested this setup for the sake of administration.
Not everybody is very familiar with the cli and a good Linux IPTables cluster was untill recently not really an option unless scripting was your second nature. 
I tested it in an active-passive setup, which worked pretty good.
It is based on keepalived and conntrackd, thuis implementing multicast.
Although it takes some time to configure it properly and I haven`t tested a active-active setup.

>From previous experiences I can vouch for the OpenBSD together with CARP.
That worked like a charm. But then again I used no gui so a clustered pfsense setup could be a good alternative there.

Hope this helps.

Cheers
________________________________________
From: Humberto Jucá [betolj@xxxxxxxxx]
Sent: Tuesday, December 11, 2012 11:19 AM
To: Arnoud Tijssen
Cc: netfilter@xxxxxxxxxxxxxxx
Subject: Re: About cluster deployments.

Hi, thanks for response!

But I like to known what were your experiences.

You already made active/active configurations?
How you handled the traffic to the two firewalls?
Worked with multicast arp or port mirroring?

I believe that working with multicast arp is better.
But, I must confirm that the gateways with firewall support this
feature as well.

A few years ago I tested pfsync + carp from a unix Openbsd.
There is a feature called arp balance - there is something in Linux?
I was impressed, but i prefer the netfilter resources (i think most flexible) .

What do you have configured?
What wasn't good? And what was cool?

I've read several documentations for linux.
I'm opening this thread to help me to define the best methodology and
make my scripts more expert!


2012/12/10 Arnoud Tijssen <ATijssen@xxxxxx>:
> For IPTables have a look at:
>
> http://www.linuxjournal.com/article/10964
>
>
> ________________________________________
> From: netfilter-owner@xxxxxxxxxxxxxxx [netfilter-owner@xxxxxxxxxxxxxxx] On Behalf Of Humberto Jucá [betolj@xxxxxxxxx]
> Sent: Friday, December 07, 2012 5:27 PM
> To: netfilter@xxxxxxxxxxxxxxx
> Subject: About cluster deployments.
>
> Hi all,
>
> I'd like to know the group opnion about available GPL cluster
> solutions. At the  moment I'm working with a solution based on ucarp
> (vip address) and rsync (conf
>  syncs) without synchronizing the conntrack table - im using active /
> passive model.
>
>  I'm adopting a configuration with two ucarp groups. One group
> determines which firewall will be dedicated to Internet control and
> other is for internal control.
>
> The most suitable configuration into Internet has been keepalived + conntrackd.
>  I think it's a great alternative, but ... I'm having some doubts.
>
> What do you think of implementations with CLUSTERIP?
> I did some tests, but found it a bit unstable. Maybe for my mistakes.
> I found articles  criticizing and others saying that the target
> CLUSTERIP will sync the conntrack table too. It's true?
>
> To synchronize the configuration i thought about using the DRDB, but i
>  found it very complex to manage - increases the difficulty in adding
> or removing nodes. In tests that i did, I prefer GlusterFS. But i'm
> undecided. I still think rsync  the most simple, secure and fast way
> to synchronize settings. In my opinion the other methods amplify the
> complexity unnecessarily (for firewalls).
>
> I found articles defending the cluster configuration with corosync + pacemaker.
> It seems a fairly complete solution, but thought is not ideal for firewall.
>
> I intend to test models with active/active, but there isn't much
> documentation on the subject.
>
> What opinion do you have about it (cluster solutions)?
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