Re: specifying identity file for scp within tramp

[Ian Eure]

On Dec 18, 2008, at 10:29 PM, 锁住子 wrote:

> On Dec 19, 1:38 pm, Barry Margolin <bar...@alum.mit.edu> wrote:
> > In article
> > <97c43290-2786-4b18-aaa8-429005829...@s9g2000prm.googlegroups.com>,
> >
> >  À¯×°×² <gir...@gmail.com> wrote:
> > > Can anyone tell me if it's possible to direct tramp to use a
> > > particular set of ssh keys when connecting to a particular server?  
> > > I'm
> > > trying to use scp with the equivalent of the -i option, what I tried
> > > below just seems to confuse tramp, is there some other way I  
> > > should be
> > > doing this?
> >
> > > (add-to-list 'tramp-default-method-alist
> > >               '("remote_server" "" "scp -i /Users/my_user/.ssh/
> > > my_key"))
> >
> > Why not use the IdentityFile directives in ~/.ssh/config?
>
> I'm already using a set of keys for regular ssh login, and there's a
> passphrase on that set. I was trying to create a second set
> specifically for tramp to use, with no passphrase and restricted
> permissions on the server side. So far as I know, I can only provide a
> single IdentityFile per host in ssh/config -- do you know of any other
> ways to automatically distinguish the proper keys for tramp to use
> with my server?
You can, like so:

Host *
    IdentityFile …

Host my.special.com
    IdentityFile ~/.ssh/id_dsa_special

Any of the options can be put in host-specific blocks. See  
ssh_config(5) for more.

 - Ian