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

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On Thu, Jul 19 2018, Basin Ilya wrote:

> Hi.
>
> 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@xxxxxxxxxx:other/publicrepo.git
>        ~/.ssh/id_rsa
>     git@xxxxxxxxxx: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 thought I could add a per-URL `core` section similar to `user` and `http`, but this section is ignored by git (2.18):
>
>     [core "git@xxxxxxxxxx:theorganization"]
>         sshCommand = /bin/false
>         #sshCommand = ssh -i ~/.ssh/id_rsa.theorganization
>
> I thought of writing a wrapper script to deduce the key from the arguments:
>
>     git@xxxxxxxxxx git-upload-pack '/theorganization/privaterepo.git'
>
> Is this the only option?

Yes, I had a similar problem a while ago (which I sent an RFC patch for)
which shows a script you can use:
https://public-inbox.org/git/20180103102840.27897-1-avarab@xxxxxxxxx/

It would be nice if this were configurable. Instead of the way you
suggested, it would be more general if we supported:

    [Include "remote:git@xxxxxxxxxx:theorganization*"]
    path = theorganization.config

Although I'm sure we'd have some interesting chicken & egg problems
there when it comes to bootstrapping the config parsing.



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