Forward SSH keys for Capistrano deploys

The other days I was setting up a virtual server for one of my projects and the deploy is handled with Capistrano and it complained about the SSH classic — Permission denied (publickey).

Usually I set up a new SSH key on the server and add it to Github or wherever I’m hosting my source code, but there is a much better way with SSH forwarding that doesn’t require adding any new keys. Edit .ssh/config on your local machine and add ForwardAgent yes for your server.

    ForwardAgent yes

After that, your key to SSH agent on your local machine by running the following.

ssh-add ~/.ssh/id_rsa

If you are using Mac you’d have add your key after every restart of the system. To make it permanent, run the following line.

/usr/bin/ssh-add -K ~/.ssh/id_rsa

Now, every time you connect to the server with SSH your key is forwarded to that machine and it behaves as if it was physically present on that machine.


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