[PLUG] HA configuration

Ameet Tirodkar ameet.61 at gmail.com
Thu Oct 11 10:58:42 IST 2007

Hi Pranav,

Thanks for your reply.

Actually i am working in GajShield Infotech. We have already developed
firewall. In our Firewall there is one option HA. For HA we are using

I am not having much idea about working of HA. I have to do some
modification in existing configuration of HA. That's why i would like
to know is the exact working of HA.

Can you provide me any documentation on HA with keepalived of
heartbeat and drbd?


Ameet Tirodkar.

On 10/11/07, Pranav Peshwe <pranavpeshwe at gmail.com> wrote:
> On 10/10/07, Ameet Tirodkar <ameet.61 at gmail.com> wrote:
> >
> > I want to configure two linux based firewall in HA
> > (High-Availability). Can anybody tell me what are the requirements for
> > the same.
> Hi Ameet,
>              Hardware or software requirements ?
> Considering software - heartbeat and drbd are widely used for software HA.
> They work well on popular linux distros.
> For a reliable HA config, you'll need <ideally> two exactly identical
> machines</ideally>, with either, two NICs each or one NIC and a serial port.
> Machines with only a NIC are _not_ enough for a serious HA deployment. A
> quorum device is recommended for critical deployments. Since its a firewall,
> IMHO, you'll be okay with ethernet (and not need gigabit eth or IB etc)
> Some questions (dont mind :) ) -
> Why exactly are you going for HA ? What do you think might fail ? How
> reliable are the other elements in your network ? How apart are you planning
> to install the two HA boxes(peers) ? same room ? different rooms ? different
> buildings ? different cities ? ..
> The configuration of your machines and their interconnection will depend
> upon what choice you make for the above questions.
> HTH.
> Best regards,
> Pranav
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