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 Likes
#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.
2 Likes
#3

I am facing same, did everything correctly still marked as failed

#4

I was experiencing the exact same problem, until I left the default key name (in my case id_ed25519). That way it worked.

#5

i have the same issue, came looking for some help

1 Like
#6

I have the same issue as well. I did everything correctly and was able to SSH as well still the grader shows the error as “SSH access is not configured correctly for instance nautilus‑ec2.”

I did redo twice as well still grader shows error.

Need help!

#7

This one is pretty easy:

  1. Create an RSA key at the default location (/root/.ssh/id_rsa) in the aws-client terminal of the task.
  2. Open the AWS console using the supplied credentials.
  3. Import the public key you created in (1) (/root/ssh/id_rsa.pub) using the terminal’s “import keypair” feature – it’s in the menu under the EC2 page.
  4. Create the EC2 instance using the info in the task. I used the keypair I defined in (3) although you can use any key pair you want for that.
  5. Use the “Connect” info for ssh for the create EC2 instance and do sudo -i to become root in the instance.
  6. Edit the /root/.ssh/authorized_keys file and remove its existing content; copy in the id_rsa.pub content into the file.
  7. verify that you can ssh into the root user of the instance as ssh -i ~/.ssh/id_rsa root@PUBLIC-IP-ADDR

Just verified (again) that this works very well.