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IP address / domain name not resolved on Amazon EC2

asked 2011-11-27 19:10:08 -0500

IsaacSaito gravatar image

updated 2011-11-28 05:38:45 -0500

I have installed askbot experimentally on Amazon EC2, both of which I'm new to. On EC2 there's a feature called "Elastic IP" that assigns static IP to its virtual machine instance. When I start running askbot by following command WITHOUT using Elastic IP (meaning I used the IP dynamically assigned by EC2 at that moment), I can access to my askbot via browser by using WAN IP.

sudo python manage.py runserver `hostname -i`:8008

However, when I turn on Elastic IP, I can't access via browser ("not found" on browser, and no record in the web server's log).

It looks like hostname command returns LAN IP on EC2. So I tried:

sudo python manage.py runserver %WAN_IP%:8008

where %WAN_IP% is the one assigned by Elastic IP. This fails to run askbot complaining "Error: That IP address can't be assigned-to."

I want to keep using Elastic IP (since it's too cumbersome every time to change IP accordingly). Any idea would be appreciated.

The last 4 lines of my setting.py looks like this:

DOMAIN_NAME = '%WAN_IP%'

CSRF_COOKIE_NAME = '%WAN_IP%_csrf'
CSRF_COOKIE_DOMAIN = DOMAIN_NAME
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answered 2011-11-27 23:27:53 -0500

Evgeny gravatar image

updated 2011-11-27 23:28:47 -0500

Looks like you need to associate the "Elastic IP" with your instance, please take a look at the Amazon documentation.

http://aws.amazon.com/articles/1346

Take a look at the section "associate IP address with a running instance".

(The way you name the csrf cookie does not matter)

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@Evgeny thx. Once I manage to have time I'll try your suggestion and report.

IsaacSaito gravatar imageIsaacSaito ( 2011-12-18 01:48:29 -0500 )edit

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Asked: 2011-11-27 19:10:08 -0500

Seen: 1,120 times

Last updated: Nov 28 '11