[Freeswitch-users] High Availability Cluster Module for FreeSWITCH

[Marcin Gozdalik]

I wonder how do you handle network partition? Simply "knowing" which nodes
are up in a distributed system is hard enough and there is a reason why
solutions like pacemaker/corosync have years of development behind them.

W dniu niedziela, 10 lutego 2013 użytkownik Eliot Gable napisał:

> The beauty of the module is that it will not require any 3rd party
> software to operate. I am designing it to run entirely in-memory using
> multi-cast events to communicate between cluster nodes. No external
> database will be required to enable the automatic fail over and call
> recovery.
>
> If you have your customers / clients using DNS to point traffic to
> your system and you run multiple master nodes with DNS performing load
> balancing, you can also make use of the maintenance mode I have
> planned which will use a separate IP address and update your DNS
> records to remove the master which you put into maintenance mode and
> put in the maintenance IP which is assigned to the slave node which is
> being promoted as master. This allows calls to drain off the master
> while new calls come up on the slave, and then you can gracefully shut
> down the master when all calls are finished. Once you are done with
> maintenance, you simply bring it back online and it comes up as a
> slave or a master as needed (according to your configured master /
> slave ratio). The IP which it was using as a master node becomes the
> new designated maintenance IP. This is the only case where a 3rd party
> software package is required, and it is an optional feature.
>
>
> On Sat, Feb 9, 2013 at 6:49 PM, Gilad Abada <ga at steadfasttelecom.com<javascript:;>>
> wrote:
> > Hey Eliot
> >
> > Sounds exciting. Which DB will you be using Postgres? I will try to
> > get my company to pitch in a few dollars.
> >
> > Sent from my mobile device.
> >
> > On Feb 9, 2013, at 12:11 PM, Eliot Gable <egable+freeswitch at gmail.com<javascript:;>>
> wrote:
> >
> >> For the past two years, I have been working on and off on a high
> >> availability cluster module for FreeSWITCH. If you would like to see
> >> HA built into FreeSWITCH directly, instead of dealing with Pacemaker +
> >> Corosync or other 3rd party systems, please check out the module,
> >> voice your support, provide feedback and suggestions, and consider
> >> supporting it.
> >>
> >> Some advantages over a 3rd party solution like Pacemaker include:
> >>
> >> - Sub-second failure detection and response (meaning it can start
> >> recovering calls less than a second after a failure occurs)
> >> - Failure detection is built into FreeSWITCH so it can detect
> >> conditions which 3rd party modules cannot detect
> >> - One shared configuration file between all nodes (no per-node IP
> >> configuration required)
> >> - No fixed number of nodes
> >> - Graceful migration of calls with a maintenance mode (requires DNS)
> >>
> >> These are just some of the benefits of building a FreeSWITCH-specific
> >> HA system. For additional details about the project, please visit:
> >>
> >> http://wiki.freeswitch.org/wiki/Mod_ha_cluster
> >>
> >>
> >> If you would like to see this project come to fruition, please
> >> consider financially supporting it through Kickstarter:
> >>
> >>
> http://www.kickstarter.com/projects/1175121367/high-availability-cluster-module-for-freeswitch
> >>
> >>
> >>
> >> Thanks in advance for anyone who contributes, either with just a
> >> shout-out, with feedback and/or suggestions, and especially to those
> >> who pledge some financial support.
> >>
>
> _________________________________________________________________________
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>
> 
> 
>
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-- 
Marcin Gozdalik
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