How to run an ansible-playbook with a passphrase-protected-ssh-private-key?

Question

I have an autoscaling group on Amazon EC2 and I have added my public key when I create AMI with packer so I can run ansible-playbook and ssh to the hos

Answer 1

Building up on @javeed-shakeel's answer, I added the following lines to my .bashrc:

command -v ansible > /dev/null &&
    alias ansible='ssh-add -l > /dev/null || ssh-add 2> /dev/null && ansible'
command -v ansible-playbook > /dev/null &&
    alias ansible-playbook='ssh-add -l > /dev/null || ssh-add 2> /dev/null && ansible-playbook'

This will run ssh-add before ansible(-playbook) iff there was no key added to the ssh-agent, yet. This has the advantage that one does not need to run ssh-add by hand and one will be asked for the passphrase only if it is necessary.