High Availability of a web server on a distributed cloud

[Fernando Duran]

If the application is HTTP a relatively simple solution is to use nginx as a load balancer http://blog.jsdelivr.com/2013/01/nginx-load-balancing-basics.html plus some hearbeat/monitoring to detect/alert when a node goes down.

High availability is an excellent area to learn about networking/scripting/trade-off decisions etc but it's very hard to get right, esp. the first time. I think is very worth it using the cloud provider's solutions, like Amazon's (or Rackspace's) load balancers and autoscaling.

---------------------
Fernando Duran
http://www.fduran.com


>________________________________
> From: Dave Cramer <davecramer-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org>
>To: tlug-lxSQFCZeNF4 at public.gmane.org 
>Sent: Monday, January 14, 2013 8:57:39 AM
>Subject: [TLUG]: High Availability of a web server on a distributed cloud
> 
>
>It is relatively simple to distribute an application to a number of servers and use haproxy to switch ip's. What I can't figure out is how to switch make sure that the IP that points to ha-proxy can be moved easily if that machine fails ?
>
>
>DNS round robin doesn't exactly work. I have a very limited understanding of BGP is it possible to do without BGP ?
>
>
>
>Dave Cramer
>
> 
--
The Toronto Linux Users Group.      Meetings: http://gtalug.org/
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://gtalug.org/wiki/Mailing_lists