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My new server instances are configured to login on root via ssh with password. I want my playbook to reconfigure it to use keys instead and disable root login with password on first run, so I need something like this:

  • try to login with key
  • if can't login with key:

    • login with password
    • add key to authorized_keys
    • disable root login with password
    • optionally reconnect using key
  • do other tasks

How can I acomplish that?

EDIT: To be clear, I'm not asking how to add key or disable root, that's just for context. I'm asking how to fallback to password if couldn't authenticate with key. With --ask-pass or ansible_ssh_pass set, ansible won't even try to use public key authentication

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Good question, what have you tried so far? –  dawud Nov 4 '13 at 18:08
I took the ssh configuration to a separate playbook and I run it with -k option, then I run the main playbook without -k (using key from agent). I was hoping it can be wrapped in a single playbook though... –  petr0 Nov 4 '13 at 18:26

1 Answer 1

Because I dont yet have reputation for comments, i need to write it as answer but it might not be complete. You can use --ask-pass when running ansible-playbook.

For other tasks you asked, it is achievable by various means, eg, copy module. Disabling root login also can be done eg. by templating sshd_conf or inserting line in conf file.

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--ask-pass (which is the same as -k) is what I'm doing and I wrote about it in the comment above –  petr0 May 17 '14 at 10:35

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