How to use ssh agent forwarding with "vagrant ssh"?

ssh virtualbox forwarding ssh-keys vagrant
Matt V. picture Matt V. · Aug 14, 2012 · Viewed 74.4k times · Source

Rather than create a new SSH key pair on a vagrant box, I would like to re-use the key pair I have on my host machine, using agent forwarding. I've tried setting config.ssh.forward_agent to TRUE in the Vagrantfile, then rebooted the VM, and tried using:

vagrant ssh -- -A

...but I'm still getting prompted for a password when I try to do a git checkout. Any idea what I'm missing?

Answer

LuizSignorelli picture LuizSignorelli · Apr 21, 2013

I'm using vagrant 2 on OS X Mountain Lion.

Vagrant.configure("2") do |config|
  config.ssh.private_key_path = "~/.ssh/id_rsa"
  config.ssh.forward_agent = true
end
  1. config.ssh.private_key_path is your local private key
  2. Your private key must be available to the local ssh-agent. You can check with ssh-add -L, if it's not listed add it with ssh-add ~/.ssh/id_rsa
  3. Don't forget to add you public key to ~/.ssh/authorized_keys on the Vagrant VM. You can do it copy-and-pasting or using a tool like ssh-copy-id

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