# Set the username and the path to the SSH key on the local machine username=<your_username> ssh_key_path=<path_to_ssh_key>
# Set the list of remote servers servers=( server1.example.com server2.example.com server3.example.com )
# Loop through the servers and copy the SSH key for server in "${servers[@]}" do echo "Copying SSH key to $server..." ssh-copy-id -i $ssh_key_path $username@$server done
This script defines a list of remote servers, and then loops through each one, copying the SSH key to the server using the ssh-copy-id Command. Replace <your_username> and <path_to_ssh_key> with your own values.
Make sure to save this script to a file (e.g. copy_ssh_key.sh) and make it executable by running chmod +x copy_ssh_key.sh. Then, simply run the script with ./copy_ssh_key.sh to copy the SSH key to all of the servers in the list.
Another way to copy the ssh key to remote servers.
#!/bin/bash for server in `cat /home/list_of_servers`; do echo "Copying SSH key to $server..." ssh-copy-id -i ~/.ssh/id_rsa.pub $server
done
Make it executable by running chmod +x copy_ssh_key.sh. Then, simply run the script with ./copy_ssh_key.sh to copy the SSH key to all of the servers in the list.
Use the ssh-copy-id command to append the public key in the local ~/.ssh/id_rsa.pub file to the ~/.ssh/authorized_keys file on the remote system, for example: ssh-copy-id remote_user@host.
When prompted, enter the password for the remote system.
Yes, if you change the machine from which you access your servers, you can just copy the ~/.ssh directory from the old machine to the new one. It is unnecessary (and cumbersome) to generate a new key pair for every server. You just need the private keys on your new machine.
ssh-copy-id is a useful tool for SSH connections to a remote host without using a password. Basically, it copies the SSH key into the remote host's authorized_keys file, which is by default in the $HOME/.ssh directory.
To copy FROM the micro editor running on your remote machine over ssh: WORKS (you MUST use Shift + select, AND Ctrl + Shift + C): Hold down Shift + mouse select in the remote micro, then Ctrl + Shift + C; then on the local PC to paste: Ctrl + V or Ctrl + Shift + V or middle-mouse-click.
You can generate an SSH key pair on your boot node and share that key with the other cluster nodes. To share the key with the cluster nodes, you must have the access to an account with root access for each node in your cluster.
Once an SSH key has been created, the ssh-copy-id command can be used to install it as an authorized key on the server. Once the key has been authorized for SSH, it grants access to the server without a password.
You can do so using an SSH connection. The commands which you would need to use are mv (short from move) and cp (short from copy). By executing the above command you will move (rename) the file original_file to new_name.
Conceivably, you can share the public key with anyone without compromising the private key; you store it on the remote system in a .ssh/authorized_keys directory.
Copy a Local File to a Remote System with the scp Command
Where file.txt is the name of the file we want to copy, remote_username is the user on the remote server, 10.10.0.2 is the server IP address. The /remote/directory is the path to the directory you want to copy the file to.
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