Automate SSH Login Using Ssh Agent And Sshpass
In this tutorial, I will show you how to automate the ssh login process. To run these commands, either you should login as root or should have sudo user privileges.
ssh using ssh-add
Assuming you have private key in ~/.ssh area.
In my case, ~/.ssh/id_rsa.pub and ~/.ssh/id_rsa keys are present in ~/.ssh directory.
Now do following...
eval `ssh-agent -s` ssh-add ~/.ssh/id_rsa
Now you can login using following command without password.
Note - The above process will work only for the current session. If you exit and login again, you will have to redo the above steps.
ssh using sshpass
Another way to automate the ssh login is using sshpass.
sudo yum -y install sshpass
If you have public and private key set with passphrase, then run following command in your zsh or bash shell...
sshpass -p ''<your_passphrase>" -P 'Enter passphrase for key' ssh -i ~/.ssh/id_rsa root@remote_host_address
If you have only the password enabled login, then run following...
sshpass -p '<your_password>' ssh root@remote_host_address