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How do I create a user and add an SSH key on an EC2 instance?

Why do I get “Permission denied (publickey)” when trying to SSH from local Ubuntu to a Amazon EC2 server?ssh-agent forwarding and sudo to another userSudo as different user and running screen“Add correct host key in known_hosts” / multiple ssh host keys per hostname?how do you create an ssh key for another user?AWS - removing ec2-user from sudo listHow to ssh into ec2 instance running centos as a newly created user?SSH login fails for EC2 instances created from image of working EC2How does Amazon ec2-user get its sudo rightscan' t access ec2 instance for additional user with sftp or ssh - key refused

0

I can ssh into a remote EC2 instance with ec2-user and the keypair in the EC2 account with root(sudo) privileges.

How can I manually create another non-ec2-user user account, add an SSH key, and add sudo permissions to that user?

linux ssh amazon-ec2 sudo ssh-keys

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asked 3 mins ago

Jamieson BeckerJamieson Becker

770712

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0

I can ssh into a remote EC2 instance with ec2-user and the keypair in the EC2 account with root(sudo) privileges.

How can I manually create another non-ec2-user user account, add an SSH key, and add sudo permissions to that user?

linux ssh amazon-ec2 sudo ssh-keys

share

asked 3 mins ago

Jamieson BeckerJamieson Becker

770712

add a comment | 

I can ssh into a remote EC2 instance with ec2-user and the keypair in the EC2 account with root(sudo) privileges.

How can I manually create another non-ec2-user user account, add an SSH key, and add sudo permissions to that user?

linux ssh amazon-ec2 sudo ssh-keys

share

asked 3 mins ago

Jamieson BeckerJamieson Becker

770712

share

asked 3 mins ago

Jamieson BeckerJamieson Becker

770712

share

asked 3 mins ago

Jamieson BeckerJamieson Becker

770712

asked 3 mins ago

Jamieson BeckerJamieson Becker

770712

asked 3 mins ago

Jamieson BeckerJamieson Becker

770712

1 Answer
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Create the user account

First,. create the user account using the standard Linux/UNIX useradd command:

NEWUSER='newusername'

SSHPUBKEY='ssh-ed25519 AAAA..xyz jamieson@desktop'

sudo useradd -m $NEWUSER

Add the SSH public key to that user's authorized_keys file

It's critical to chown the directory back to the user, or the SSH command will reject the modified file.

sudo mkdir /home/$NEWUSER/.ssh/

echo "$SSHPUBKEY" | sudo tee -a /home/$NEWUSER/.ssh/authorized_keys >/dev/null

sudo chown -R $NEWUSER:$NEWUSER /home/$NEWUSER/.ssh

Set up sudo permissions for that user

This uses the standard /etc/sudoers.d directory (found in all major distributions) to add sudo permissions with an "ALL" role to the user account.

echo "$NEWUSER ALL=(ALL) NOPASSWD: ALL" | sudo tee "/etc/sudoers.d/$NEWUSER" >/dev/null

(Disclaimer: I wrote the first release of a tool that automates this at Userify.)

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answered 3 mins ago

Jamieson BeckerJamieson Becker

770712

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0

Create the user account

First,. create the user account using the standard Linux/UNIX useradd command:

NEWUSER='newusername'

SSHPUBKEY='ssh-ed25519 AAAA..xyz jamieson@desktop'

sudo useradd -m $NEWUSER

Add the SSH public key to that user's authorized_keys file

It's critical to chown the directory back to the user, or the SSH command will reject the modified file.

sudo mkdir /home/$NEWUSER/.ssh/

echo "$SSHPUBKEY" | sudo tee -a /home/$NEWUSER/.ssh/authorized_keys >/dev/null

sudo chown -R $NEWUSER:$NEWUSER /home/$NEWUSER/.ssh

Set up sudo permissions for that user

This uses the standard /etc/sudoers.d directory (found in all major distributions) to add sudo permissions with an "ALL" role to the user account.

echo "$NEWUSER ALL=(ALL) NOPASSWD: ALL" | sudo tee "/etc/sudoers.d/$NEWUSER" >/dev/null

(Disclaimer: I wrote the first release of a tool that automates this at Userify.)

share

answered 3 mins ago

Jamieson BeckerJamieson Becker

770712

add a comment | 

0

Create the user account

First,. create the user account using the standard Linux/UNIX useradd command:

NEWUSER='newusername'

SSHPUBKEY='ssh-ed25519 AAAA..xyz jamieson@desktop'

sudo useradd -m $NEWUSER

Add the SSH public key to that user's authorized_keys file

It's critical to chown the directory back to the user, or the SSH command will reject the modified file.

sudo mkdir /home/$NEWUSER/.ssh/

echo "$SSHPUBKEY" | sudo tee -a /home/$NEWUSER/.ssh/authorized_keys >/dev/null

sudo chown -R $NEWUSER:$NEWUSER /home/$NEWUSER/.ssh

Set up sudo permissions for that user

This uses the standard /etc/sudoers.d directory (found in all major distributions) to add sudo permissions with an "ALL" role to the user account.

echo "$NEWUSER ALL=(ALL) NOPASSWD: ALL" | sudo tee "/etc/sudoers.d/$NEWUSER" >/dev/null

(Disclaimer: I wrote the first release of a tool that automates this at Userify.)

share

answered 3 mins ago

Jamieson BeckerJamieson Becker

770712

add a comment | 

Create the user account

First,. create the user account using the standard Linux/UNIX useradd command:

NEWUSER='newusername'

SSHPUBKEY='ssh-ed25519 AAAA..xyz jamieson@desktop'

sudo useradd -m $NEWUSER

Add the SSH public key to that user's authorized_keys file

It's critical to chown the directory back to the user, or the SSH command will reject the modified file.

sudo mkdir /home/$NEWUSER/.ssh/

echo "$SSHPUBKEY" | sudo tee -a /home/$NEWUSER/.ssh/authorized_keys >/dev/null

sudo chown -R $NEWUSER:$NEWUSER /home/$NEWUSER/.ssh

Set up sudo permissions for that user

This uses the standard /etc/sudoers.d directory (found in all major distributions) to add sudo permissions with an "ALL" role to the user account.

echo "$NEWUSER ALL=(ALL) NOPASSWD: ALL" | sudo tee "/etc/sudoers.d/$NEWUSER" >/dev/null

(Disclaimer: I wrote the first release of a tool that automates this at Userify.)

share

answered 3 mins ago

Jamieson BeckerJamieson Becker

770712

NEWUSER='newusername'

SSHPUBKEY='ssh-ed25519 AAAA..xyz jamieson@desktop'

sudo useradd -m $NEWUSER

sudo mkdir /home/$NEWUSER/.ssh/

echo "$SSHPUBKEY" | sudo tee -a /home/$NEWUSER/.ssh/authorized_keys >/dev/null

sudo chown -R $NEWUSER:$NEWUSER /home/$NEWUSER/.ssh

share

answered 3 mins ago

Jamieson BeckerJamieson Becker

770712

answered 3 mins ago

Jamieson BeckerJamieson Becker

770712

answered 3 mins ago

Jamieson BeckerJamieson Becker

770712