Adding a Second SSH Key to a Remote Host

I always find that I run into some kind of problem whenever I try to add a new client computer to have automatic passwordless key access. So I decided to clearly document each step to adding a new client computer.

1. New Local Client

ssh-keygen

# eval `ssh-agent -s`

ssh-add # run the eval command above first if ssh-add fails

Copy the .pub file it saved on the new client over to the old local client.

2. Old Local Client (that has ssh access already)

scp ~/.ssh/id_rsa.pub korey@koreyhinton.com:~/.ssh/uploaded.pub

3. Remote Server

ssh korey@koreyhinton.com

# create a backup
cp ~/.ssh/authorized_keys ~/.ssh/backup

# append key
cat ~/.ssh/uploaded.pub >> ~/.ssh/authorized_keys

Now you should be able to ssh from the new local client to the remote server.