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Migrate SSH users from one server to another
In this post, we’ll see how we can migrate SSH users from one server to another server. We’ll cover following scenarios:
ec2-user: exists on both the servers
new_user: ssh key for the user not available on server1
new_user2: /home directory exists but /home/.ssh directory doesn’t exist(on server2)
new_user3: /home and /home/.ssh directory exist but /home/.ssh/authorized_keys file is not there(n server2)
new_user4: user doesn’t exist on server1
Pre-requisite: 2 servers with password authentication enabled. On server 2 we need a user that can ssh into server1. We also need sshpass package installed on server2.
Step 1: Let’s have a look at what files and directories we have on server 1.
Step 2: On server2, create a file named user.txt with the list of user names we need to create on this server.
cat user.txtec2-user
new_user
new_user2
new_user3
new_user4
Step 3: On server2, create a file named password.txt with the password we need in order to ssh into server1
cat password.txtNewtestPassword2020#
