I'm trying to access new user which is created in AWS instance using SSH, but it throws an error when i execute the command ssh -i new_keypair.pem
Error : Permission denied (publickey,gssapi-keyex,gssapi-with-mic)..
I followed each and every steps as mentioned in AWS document
Please Let me know is there any additional configurations are required to access newly added user using SSH..
62 Answers
Add the newly created user in /etc/ssh/sshd_config as mentioned below. It's also working fine.
AllowUsers root new_user
AllowGroups root new_user
1SSH to your EC2 Instance as standard ec2-user
sudo adduser -m testuser
sudo su - testuser
mkdir .ssh
chmod 700 .ssh
touch .ssh/authorized_keys
chmod 600 .ssh/authorized_keysOn your local pc, if you don't have them already, generate rsa keys (always give enter on default options)
ssh-keygen -t rsa
cat ~/.ssh/id_rsa.pub Copy the output (something like this)
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDTvTnCzaaIPChWXgvxlyswcNzzTjlYUcfNExm6zGGJRtEcjvHMpV6vg9XMOb9ZgRNhgpWQqitQ9yLy+mjznDerfuK9RsEIdu5wb7uVFXs6TGHy8b9sqid0PH6PYuWiZ1/pA6cRrtQudeqlZuVV5wyimPFKZONW3v+BOp+AtIvChPhZI+rWn0T3vxi2NTHfdqW93VqsQ7ReEkzd1RGxJZ+1X0kADmCJKjwAoju0DvvVz3/xdsc2UT3rjRsUTxDR1bH4GBQr7U1pwCGAqZqvEl72TLpUdWRECG42qIPsut95c237gtzkwlU7iAOeiPWJduMV/bPxXnrB/YqF+XwRMuiz testuser@testEC2
and paste into the .ssh/authorized_keys of your testuser of testinstance (using vi or nano or whatever)
from your client ssh to your ec2
ssh testuser@ip.e.c.2This will work. I don't really get the Amazon way of sharing and setting up pem keys. I think it is easier for their automated systems but not for sysadmins. You can use your public key that way on all the servers you need to admin.
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