Ssh – How to set up an AWS instance to allow others to SSH in

amazon ec2sshssh-keys

I've recently set up a AWS EC2 instance (using an Ubuntu AMI) for a web project. I of course created a public/private pem key which I sued to log in a and set up the instance. Now I have a new developer who needs to be able SSH into the instance as well. I created a user account on instance but when they try to log in they get a "Permission denied (publickey)."

What gives?

PBI

Best Answer

You need to create them a public/private key pair which they can then use to log into the box.

see the following from the EC2 documents.

Scroll down to Key Generation and Distribution you will need to read the WHOLE document to ensure you dont lock yourself out.

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The server has setting

 PasswordAuthentication no

Change it to yes and after a restart you'll be able to use password authentication.

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Two parts: first, turn up debugging on your ssh sever. Edit /etc/ssh/sshd_config and increase LogLevel to DEBUG. Then force your ssh server to reload it's config with killall -HUP <sshd pid>.

That will cause the server to add much more details to your /var/log/secure and/or /var/log/auth logfiles.

Secondly (actually you cant try this first), increase the debug level on the client side. ssh in to the box with

$ ssh -vvv hostname

and that will print out lots more info about where the process is failing.

If you do turn up the debug level on your ssh server, don't forget to turn it back down when you are finished.

Best Answer

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