SSH Key Permission Issue

1. **Open your terminal.**
2. **Change the permissions of the `.pem` file:**

Run the following command to set the permissions to `400`, which means only the owner can read the file:

chmod 400 openeratech.pem

3. **Try connecting again:**

After adjusting the permissions, attempt to SSH into your EC2 instance again:

ssh -i "openeratech.pem" ubuntu@ec2-51-20-60-238.eu-north-1.compute.amazonaws.com

This should resolve the permission issue, and you should be able to connect to your EC2 instance.

1. **Open your WSL terminal.**

2. **Navigate to the directory containing your `.pem` file** (if you're not already there):

cd /mnt/d/AWS-instance-projects

3. **Change the permissions of the `.pem` file:**

Run the following command to set the permissions to `400`:

chmod 400 openeratech.pem

4. **Connect to your EC2 instance again:**

Try SSH-ing into your EC2 instance:

ssh -i "openeratech.pem" ubuntu@ec2-51-20-60-238.eu-north-1.compute.amazonaws.com

This should resolve the permission issue. If you still face problems, make sure that you're in the correct directory and that the file path is accurate.

1. **Verify the Current Permissions**:
Make sure the permissions have been set correctly. Run the following command to check the permissions:

ls -l openeratech.pem

The output should show the permissions as `-r——–` (which corresponds to `400`).

2. **Check the File Location**:
Ensure that you're using the correct path to the `.pem` file in your SSH command. If you're currently in the same directory, you can use:

ssh -i ./openeratech.pem ubuntu@ec2-51-20-60-238.eu-north-1.compute.amazonaws.com

3. **Try a Different Terminal**:
If you're using WSL, try using a different terminal (like PowerShell or Command Prompt) with the OpenSSH client. You might need to convert your `.pem` file to a `.ppk` format using PuTTYgen if you're using PuTTY.

4. **Confirm the EC2 Instance's Public IP**:
Make sure that the public IP address or DNS name is correct and that your EC2 instance is running. You can check this in the AWS Management Console.

5. **Check Security Group Settings**:
Ensure that the security group associated with your EC2 instance allows inbound SSH traffic (port 22) from your IP address.

6. **Try Running SSH in Verbose Mode**:
You can get more detailed output by using the `-v` option with your SSH command:

ssh -i "openeratech.pem" -v ubuntu@ec2-51-20-60-238.eu-north-1.compute.amazonaws.com

This will provide more information about the SSH connection attempt and may help identify the issue.

7. **Restart WSL**:
Sometimes, restarting WSL can resolve issues. You can do this by closing your WSL terminal and reopening it.

Try these steps, and let me know if you encounter any specific error messages or issues during the process!