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Amazon Ec2 Permission Denied Publickey Ssh Key Generate
Verify that you're using the correct user name for your AMI.
For a list of valid user names, see Troubleshooting Connecting to Your Instance - Error: Server Refused our key or No supported authentication methods available.
Verify that the correct permissions are set for the instance and that no directories are missing.
- You don't need authorizedkeys on your client. You must tell the ssh-client to actually use the key you generated. There are several ways to do that. Just for testing type ssh -vvv -i.ssh/idrsa youruser@yourLinode.You will have to provide your passphrase every time you want to.
- Mar 01, 2016 Permission denied (publickey). Fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists. I already generate the key rsaid.pub and added it to my ssh keys in gitlab. When I try to run this command ssh -v email protected, I got this results.
There are three methods for verifying permissions and directories on the instance:
Method 1: Use AWS Systems Manager Session Manager to log into the instance and check the permissions
If you generate SSH keys without sudo and then try to use a command like sudo git push. $ ssh -T GITHUB-USERNAME@github.com Permission denied (publickey). Publickey debug1: Offering RSA public key: /Users/you/.ssh/idrsa Verify the public key is attached to your account. Reporting: AWS ssh access 'Permission denied (publickey)' issue This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community. Trying to use the wrong SHH key or trying to use the wrong username. I'm going to cover both scenarios in this lesson. Let's start with the wrong SSH key. Each EC2 instance has an SSH key that is authorized to connect. You can see which key by using the EC2 console. For example, the instance you see on the screen uses the key pair named will.
Note: Installation of the SSM Agent is required to use this method. For more information on Session Manager and a complete list of prerequisites, see Getting Started with Session Manager.
1. Open the AWS Systems Manager console.
2. Start a session.
3. Use the stat command to make sure the permissions of the files under the home directory are correct. The following is a list of the correct permissions:
- Linux home directory, /home, for example, should be (0755/drwxr-xr-x).
- User's home directory, /home/ec2-user/, for example, should be (0700/drwx------).
- .ssh directory permission, /home/ec2-user/.ssh, for example, should be (0700/drwx------).
- authorized_keys file permission, /home/ec2-user/.ssh/authorized_keys, for example, should be (0600/-rw-------).
The following is an example of the stat command and the resulting output. In this example, ec2-user is the user name. Change the user name according to your specific AMI.
I'm trying to connect to my Linode with SSH but I get this error:
Permission denied (publickey)
How can I get around this?
1 Reply
If you're getting the Permission denied (publickey) error when connecting to your Linode with SSH, one of three things may be happening.
- You don't have the matching key on your local machine.
- You have too many keys on your local machine.
- Your key isn't listed in the authorized_keys file on the Linode (or the file doesn't exist).
First, check to see if you can find out why you can't connect. This command will tell you everything that SSH is trying to do and trying to check when accessing your Linode:
Then, you can try logging into your Linode with the following SSH command:
This command tells SSH to prefer passwords over public keys. It only works if you have both PubKeyAuthentication and PasswordAuthentication enabled -- and it won't work with PuTTy, unfortunately.
If you don't have the matching key on your local machine, then you'll need to:
-- Enable password authentication on your server.
-- (optional) Disable public key authentication on your server.
-- Restart the SSH server.
First, you will need to log in to your Linode via the Lish console.
Once logged in, you'll need to edit your /etc/ssh/sshd_config file. To use Nano to edit it, run this command (use 'sudo' if not logged in as root):
Make the following changes (disabling PubKeyAuthentication is optional). Don't forget to remove # symbols before each value that you are changing.
So, for example:
PubKeyAuthentication Yes
#PasswordAuthentication no
Would change to:
PubKeyAuthentication No
PasswordAuthentication Yes
When you're done, hit CTRL+O to save and CTRL+X to exit Nano. You'll just need to restart the SSH server with one of the following commands.
Now you should be able to try and connect with SSH. If you're still having trouble, take a look at the changes you made and make sure everything looks right -- the # is removed before each key and there are no extra spaces or anything.
If you have too many keys on your local Machine, then you can try specifying which key you want to use:
If your key isn't in the authorized_keys file (or the file doesn't exist) on your Linode
To fix this, you'll need to manually insert your public key into the authorized_keys file on your Linode (or create the file and then insert it).
If you haven't generated a public key, you can try disabling the public key authentication and then enabling password authentication using the instructions above. Otherwise, you can generate a key using these instructions.
First, log in to your Linode via the Lish console.
Next, you need to view the contents of your public key file (usually, id_rsa.pub). On MacOS, it should be found in /Users/[username]/.ssh/ . On Linux systems, it should be found in /home/[username]/.ssh/. To view, just type:
On Windows systems, it usually you would most likely have chosen the location for this file. To view it, you can typically open the file with Notepad.
A valid key will look something like this:
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQC3tvOQFGAnY3p1t6gv6rXEat8maN
YghZYuAuci3Pd0gEr3MHMFwZ3NqYA87VM+HLbu9EbBjvPjuFmNkdT7yN8TJkv1Z61g
+NJ3+aJBGHNe8MDKs69z3yNgakiI2ynT8+GDOz545fQfZdyl5oQ9IvcODz0k7yoKP9
yQdSj8l9dCN9Zf8GBLQTbryHgaSEoinpX5SFmNkdT7yN8TJkv1Z61gpB+NJ3+aJBGH
Jvl72P8ePqG2nIvSqHsm/4OfdJshaXHA+j6DpvSQ user@users-laptop.local
Keep this file open for now.
Next, verify whether the key is in the authorized_keys file on your Linode.
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Open a Lish console and log in (with the same user you use when logging in via SSH).
View your authorized_keys file with the following command:
You can visually compare them or use a tool like diffchecker -- just remember that there could be multiple keys listed in the authorized_keys file. Each line contains a single public key (word wrapping may make it look like the key takes up several lines).
If they don't match, or your key isn't listed in the file, you will need to add it.
Go back to the window with your public key, and select the entire key (from 'ssh-rsa' to 'users-laptop.local') and then copy it to your clipboard. They key should be on a single line (word wrap may look like it is on multiple lines).
If the authorized_keys file doesn't exist or you received an error when trying to view it, we need to confirm that you have the .ssh folder and the authorized_keys file on your Linode.
If you receive an error from either of these commands, you will need to create the folder or file.
To create the .ssh folder:
To create the authorized_keys file:
Next, open the authorized_keys file in VIM.
Type shift+g to go to the end of the file, and then type shift+a to edit the file. Press return/enter to create a new line. Next, paste your public key into the authorized_keys file. Remember, each key takes up one line (word wrapping may make it look like this takes up multiple lines).
Finally, hit the escape key, and then type :wq! to save the file and close VIM.
Linux Ssh Permission Denied
Last but not least, restart the SSH server with one of the following commands.
Amazon Ec2 Permission Denied Publickey Ssh Key Generate Linux
More information
Use Public Key Authentication with SSH - Linode
Configure SSH key based secure authentication - SSH.com