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Can't ssh into server if using proper domain name

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http://serverfault.com – I'm trying to login to a Ubuntu box hosted on AWS EC2, which has a route53 domain setup. The domain is resolved to the proper IP, e.g. host myhost.com and host ec2-x-x-x-x.eu-west-1.compute.amazonaws.com give the same output. I'm able to login using the amazon address like ssh -i mykey.pem ubuntu@ec2-x-x-x-x.eu-west-1.compute.amazonaws.com, but when I try to ssh -i mykey.pem ubuntu@myhost.com, I get Permission denied (publickey). Why can this happen? (HowTos)

taskli's picture
Submitted by taskli on 08/30/2012

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The project I'm working on requires that we mask AWS EC2 host names with our own subdomains.

For example:

ec2-176-34-163-40.eu-west-1.compute.amazonaws.com would map to gf53ef.domain.com

and

ec2-123-31-124-60.eu-west-1.compute.amazonaws.com would map to sdfrh5.domain.com

There will always be list available that stores the relationship between the domains.

I'm getting started with puppet on ec2 using the following guide.

https://help.ubuntu.com/12.04/serverguide/puppet.html

In the very last step when I try to sign the puppet client from the puppet master I get the following error

root@ip-10-248-27-66:/home/ubuntu# puppetca --sign ec2-54-245-56-210.us-west-2.compute.amazonaws.com err: Could not call sign: Could not find certificate request for ec2

Using SSH in a GNOME terminal is fine. But I want to use it in a Unity window (the location text field, ctrl+l).

I created an EC2 instance Stopped it Again started it .

Got the following error

Aloks-MacBook-Pro:AWS alokmandloi$ ssh -i working_key.pem ubuntu@ec2-184-73-22-113.compute-1.amazonaws.com @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

I purchased an amazon ec2 instance, where I configured a webserver. Then I purchased Route53 to handle dns, where I set my custom domain to point on the Elastic IP.

The fact is that when typing my domain name the server web answers using the AmazonAws.com domain!!

I'm running varnish in front of apache2.

How can I fix that?

I am not able to scp from one EC2 instance to another EC2 instance.

I have the following /etc/hosts file

127.0.0.1 localhost 10.248.27.66 ec2-50-112-220-110.us-west-2.compute.amazonaws.com puppetmaster

# The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts

However the host command does not resolve the name puppetmaste

I've recently signed up to SMTP2GO (smtpcorp).

I have setup the apache + passenger in my ec2 server. When i try

http://ec2-***-***-***-**.ap-*-1.compute.amazonaws.com/

output:

It works!

This is the default web page for this server.

The web server software is running but no content has been added, yet.

Next is

ec2-***-***-***-**.ap-*-1.compute.amazonaws.com is mapped to a dns, say myserver.com

Now i want to run mu