Use SSHPass to automate inputting password on password authentication.
This is convenient but it has security risks (leak of password), take special care if you use it.
[1] Install SSHPass
root@dlp:~# apt -y install sshpass
[2] How to use SSHPass.
# [-p password] : from argument # if initial connection, add [StrictHostKeyChecking=no] ubuntu@dlp:~$ sshpass -p password ssh -o StrictHostKeyChecking=no 10.0.0.51 hostname node01.srv.world # [-f file] : from file ubuntu@dlp:~$ echo 'password' > sshpass.txt ubuntu@dlp:~$ chmod 600 sshpass.txt ubuntu@dlp:~$ sshpass -f sshpass.txt ssh 10.0.0.51 hostname node01.srv.world # [-e] : from environment variable ubuntu@dlp:~$ export SSHPASS=password ubuntu@dlp:~$ sshpass -e ssh 10.0.0.51 hostname node01.srv.world