Re: Use different ssh keys for different github repos (per-url sshCommand)

From: Jeff King <peff@peff.net>
Date: Jul 19, 2018, 16:42 UTC
Message-ID: <20180719164251.GA4868@sigill.intra.peff.net>
In-Reply-To: <44d3c280-3fb2-2415-46b7-343983e76e0b@gmail.com>

On Thu, Jul 19, 2018 at 03:24:54PM +0300, Basin Ilya wrote:

Show 13 quoted lines

> I have two github accounts, one is for my organization and I want git
> to automatically choose the correct ssh `IdentityFile` based on the
> clone URL:
> 
>     git@github.com:other/publicrepo.git
>        ~/.ssh/id_rsa
>     git@github.com:theorganization/privaterepo.git
>        ~/.ssh/id_rsa.theorganization
> 
> Unfortunately, both URLs have same host name, therefore I can't
> configure this in the ssh client config. I could create a host alias
> there, but sometimes somebody else gives me the github URL and I want
> it to work out of the box.

I think you can hack around this using Git's URL rewriting.

For example, try this:

  git config --global \
    url.gh-other:other/.insteadOf \
    git@github.com:other/

  git config --global \
    url.gh-org:theorganization.insteadOf \
    git@github.com:theorganization/

And then:

  git clone git@github.com:other/publicrepo.git

will hit gh-other, which you can configure using an ssh host alias.

-Peff