Error: “SSH access is not configured correctly for nautilus‑ec2”(Day 22: Configuring Secure SSH Access to an EC2 Instance)

Cloud AWS
#1

Day 22: Configuring Secure SSH Access to an EC2 Instance ( 100days AWS cloud

I am facing an issue with the task that requires configuring SSH access for the EC2 instance named nautilus‑ec2. Even though I can successfully SSH into the instance as both ec2-user and root, the grader consistently reports:

“SSH access is not configured correctly for instance nautilus‑ec2.”

To avoid any ambiguity, here is what I have already verified:

  • The instance name is exactly nautilus‑ec2.
  • The instance is running and reachable.
  • The security group allows SSH only from my aws-client IP (35.188.139.128/32).
    ** The correct public key from /root/.ssh/nautilus-ec2.pub is present in /root/.ssh/authorized_keys on the EC2 instance.
  • Permissions on /root/.ssh and authorized_keys are correct.
  • I can SSH directly as root using the key without any password.

Despite all this, the grader still fails with the same message.

Could you please check if the grader is pointing to an old instance, cached state, or a different security group? I would appreciate your help in resolving this so I can proceed.

Thank you.

#2

I did the following with this lab, and the grader was happy:

  • on aws-client, I ran ssh-keygen and generated an rsa key as ~/.ssh/id_rsa
  • I started up the AWS console with the credentials given.
  • I imported the id_rsa.pub file from aws-client as a keypair (I called “aws-client”)
  • I created the ec2 instance as instructed, using the “aws-client” keypair for the instance.
  • I ssh’d into the ec2 instance from aws-client using ~/.ssh/id_rsa as the key; this worked.
  • I became root (sudo -i) and copied ~ec2-user/.ssh/authorized_keys to /root/.ssh/authorized_keys.
  • I closed the root shell and exited the ec2 instance, and confirmed ssh -i ~/.ssh/id_rsa root@<PUBLIC-IP-OF-EC2-INSTANCE> worked w/o a password.
  • I invoked the grader, which was green.