[SOLVED] Change SSH login from an ip address to a domain name

kb2tfa · 02-17-2015, 09:06 AM

Centos 7
Amazon EC2
two ip addresses static and elastic. elastic is public ip which is what I currently ssh into. I want something easier to remember to login with.

I have a registered domain name / vhost on this server. I want to change my ssh login from 'name@public-ip' to 'name@mydomain.com'

Not sure if that makes sense. I'm not sure what to look up to fix this. Not sure if it's a Centos thing, an amazon thing, or both.

If someone could point me in the right direction, that would be great.

smallpond · 02-17-2015, 10:27 AM

Are you asking how to set up DNS? Where is your domain name registered?

kb2tfa · 02-17-2015, 10:52 AM

I don't know what to google or lookup to fix this.

Domain is registered with mediatemple.net, and with nameservers and public ip from amazon

zone records
name TTL Type Data
blank .mydomain.com A ipaddress
*.mydomain.com A
ftp.mydomain.com A
www.mydomain.com 43200 A

smallpond · 02-17-2015, 11:38 AM

From the command line do

Code:

host mydomain.com

If it returns the correct IP then DNS is ok and you should be able to use it for ssh. If not, find out what's in DNS with:

Code:

dig -t any mydomain.com

kb2tfa · 02-17-2015, 11:53 AM

thank you soo much.

host returned the right ip address. I noticed that host only worked with www in front of the domain, so I tried ssh user@www.domain.com instead of ssh user@domain.com. it works. not sure why it won't work without www, but it's not that big of a deal. My ftp and other programs remember the ip address. I however don't, and I have to search for it when using the terminal. Now I don't have to. thanks again for your help.

smallpond · 02-17-2015, 12:57 PM

Technically what it means is that DNS has an A record for www.mydomain.com, but there is only an NS record for mydomain.com. Most web domains have the same A record for both so you don't have to type the "www." to get to the website.

Miati · 02-17-2015, 01:18 PM

Generally what I do is something like this:
In ~/.ssh/config

Code:

Host yourhostname
        user miati
        Hostname 345.3.667.3

then..

Code:

ssh yourhostname

will login to 345.3.667.3 with username of miati

Also, tab autocomplete works here as well

kb2tfa · 02-17-2015, 02:01 PM

I added an A record for mydomain.com without the www to amazon route 53, and it works. I have a zone file with mediatemple because that is where the domain is registered. Amazon requires the same info in their "Route 53" section. It appears that the Amazon requires nameserver info installed on mediatemple, but the "Route 53" zone info seems to override the mediatemple zone file. That confused me just writing it. thanks again