High Availability of a web server on a distributed cloud

[Digimer]

This being the fundamental problem of "clouds". You forgo control and,
in an outage, are at the hands and priority of your cloud provider.

Exactly why I stick to private clouds. More expensive and more
administration overhead, but entirely in my own control.

On 01/14/2013 03:36 PM, Dave Cramer wrote:
> Well because I don't really own any of the IP's as well as they are on
> disparate networks. Amazon's elastic IP solves my problem since I can
> repoint it at will, however last time amazon had an outage their console
> went down as well which made that impossible.
> 
> Dave
> 
> Dave Cramer
> 
> 
> On Mon, Jan 14, 2013 at 3:26 PM, Fernando Duran <liberosec-FFYn/CNdgSA at public.gmane.org
> <mailto:liberosec-FFYn/CNdgSA at public.gmane.org>> wrote:
> 
> 
>     >________________________________
>     > From: Dave Cramer <davecramer-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org <mailto:davecramer-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org>>
>     >To: tlug-lxSQFCZeNF4 at public.gmane.org <mailto:tlug-lxSQFCZeNF4 at public.gmane.org>
>     >Sent: Monday, January 14, 2013 2:58:55 PM
>     >Subject: Re: [TLUG]: High Availability of a web server on a
>     distributed cloud
>     >
>     >
>     >Well I don't want to use a single provider such as amazon. Which
>     makes things more difficult.
> 
>     More difficult how? if it's because you're more dependent of
>     a particular provider/solution I understand. 
> 
> 
>     Cheers,
> 
>     ---------------------
>     Fernando Duran
>     http://www.fduran.com
> 
> 
> 
>     >
>     >
>     >So the problem is essentially how to duplicate their elastic ip's
>     >
>     >
>     >
>     >Dave Cramer
>     >
>     >
>     >On Mon, Jan 14, 2013 at 2:51 PM, Fernando Duran <liberosec-FFYn/CNdgSA at public.gmane.org
>     <mailto:liberosec-FFYn/CNdgSA at public.gmane.org>> wrote:
>     >
>     >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
>     <mailto:davecramer-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org>>
>     >>>To: tlug-lxSQFCZeNF4 at public.gmane.org <mailto: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
>     >>>
>     >>> 
>     >>
>     >>--
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>     >
>     >
>     > 
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> 


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