On Wed, Jun 18, 2014 at 8:27 AM, arunkumar s <arunkumars.3...@gmail.com> wrote:
> Thanks for ur reply > It is webbased app using apache > On 16 Jun 2014 19:19, "Mohan Sundaram" <mohan....@gmail.com> wrote: > > > On Mon, Jun 16, 2014 at 6:26 PM, arunkumar s <arun_le...@yahoo.co.in> > > wrote: > > > I am running one application on two servers,between servers i am doing > > > replication of data now i need to configure one server as active and > the > > > other one as passive using ip address as failover > > > > > > I have only one option of configuring failover using ip and not have > > option > > > to do with DNS and other ways kindly help > > > > Assuming these are linux servers, you can do VRRP for ip failover in a > > master slave (active-standby) configuration. However, I suspect this > > alone may not be enough. What is your application? Web based? Suspect > > it is as you are talking of DNS. Can you drop sessions? > > > > For web based applications, it would be better to use a load balancer > > (like nginX) which will maintain sessions and will talk to servers > > behind it configured in a active-standby configuration. > Also worth deploying would be http://www.linuxvirtualserver.org/ since nginx only provides Layer-7 level fault tolerance / load balancing. This way, you can have a more cleaner DNS setup (ie., one Virtual IP address for your service being load balanced using LVS while there are multiple physical machines). LVS would work for non-http applications too. Also, if you're aiming to achieve awesome fault tolerance, you may want to consider some sort of a GSLB (Global Server Load Balancing) so that if your hosted site ("colo" or "data center") becomes unavailable, another hosted site could take over. Regards, -Suraj _______________________________________________ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ILUGC Mailing List Guidelines: http://ilugc.in/mailinglist-guidelines
