heroku - rails - Permission denied (publickey)

Question

heroku create
Creating floating-planet-1824......................... done, stack is bamboo-mri-1.9.2
http://floating-planet-1824.heroku.com/ | [email protected]:floating-planet-1824.git

git push heroku master
Warning: Permanently added the RSA host key for IP address '50.19.85.156' to the list of known hosts.
Agent admitted failure to sign using the key.
Permission denied (publickey).
fatal: The remote end hung up unexpectedly

I generated ssh keys ok.

Rebooting didn't help.

Answer 1

It turned out that

heroku keys:add ~/.ssh/id_rsa.pub

worked.