Copy the ssh key into remote servers (2024)

For Multiple remote server

#!/bin/bash
# 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
See Also
Set Up SSH and Clone Repository Using SSH in Git {Step-by-Step}

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.

Create list_of_servers file.

vi list_of_servers
username@servername1
username@servername2
username@servername3

Create a file (e.g. copy_ssh_key.sh)

#!/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.