[Mongrel] amazon ec2

István leccine at gmail.com
Sat Jul 24 04:57:47 EDT 2010

I guess your question is where to bind mongrel and the answer is to the
local ip since the external ip is not bound to you box by any mean, instead,
the traffic is routed to you instance belong to that public ip(som magic
happens with the headers).

Here is the definition for public/private ips in ec2

   - EC2 Private IP Address: The internal RFC 1918 address of an instance
   that is only routable within the EC2 Cloud. Network traffic originating
   outside the EC2 network cannot route to this IP, and must use the Public IP
   or Elastic IP Address mapped to the instance.

   - EC2 Public IP Address: Internet routable IP address assigned by the
   system for all instances. Traffic routed to the Public IP is translated via
   1:1 Network Address Translation (NAT) and forwarded to the Private IP
   address of an instance. The mapping of a Public IP to Private IP of an
   instance is the default launch configuration for all instance types. Public
   IP Addresses are no longer usable upon instance termination.


I hope that helps.


On Fri, Jul 23, 2010 at 4:40 PM, Carl Dubois <carl.dubois at gmail.com> wrote:

> Hi All,
> How can I resolve http using a Amazon EC2 instance?
> The instance used the mongrel web server for rails.
> Do I need to modify a mongrel configuration to use the externally assigned
> ip?
> Currently resolves to by default.
> Thanks
> _______________________________________________
> Mongrel-users mailing list
> Mongrel-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/mongrel-users

the sun shines for all

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