Re: [PATCH] Input wanted on changes.

On Mon, Jan 24, 2005 at 05:20:24PM +0000, Toby Dickenson wrote:
> 
> Ahh, yes. There is a detail I forgot to mention. (Im not using this technique 
> in production, so there may be other gaps too. please do keep prodding)

:-)

> There are various other ways to choose your private key. Last time I needed 
> this, I used ~/.ssh/config on the secondary. From "man ssh_config":
> 
>      HostName
>              Specifies the real host name to log into.  This can be used
>              to specify nicknames or abbreviations for hosts.  Default is 
>              the name given on the command line.  Numeric IP addresses
>              are also permitted (both on the command line and in
>              HostName specifications).
> 
> That is, your replica.py command line contains a host nickname, and 
> ~/.ssh/config maps that on to the real hostname and identity file.
 
Well, I'd call that as bad a hack as the previous ones, in fact the 
original one which looks for the libs in the directory below the script 
itself tastes a lot better now. (Perhaps with a conditional that looks 
if ZODB really is there, and only adds it in that case.) 

Kind of like having a runpath in binaries insted of fiddling with 
LD_LIBRARY_PATH. *shrug*

> Thinking aloud: You may also be able to leverage the ssh -A switch to pass 
> authentication information from the master.
> 
> 
> Waaah - all of those solutions are nasty..

Heh.
 
> rsync has a -e switch that lets you replace ssh, or include extra parameters 
> to ssh. How about this attached (untested) patch that adds the same thing to 
> replica.py? You could use -e "ssh -i identityfile"

Can't do '-e "ssh -i identityfile"', got to be 
'-e "/usr/bin/ssh -i identityfile"' (absolute path), but other than 
that, yeah. I got this to work.

I like it. This also lets you add that "-x" in there, if you feel like it.
(And whatever other ssh options you might like/need. Or if it's 
 installed somewhere else than /usr/bin, perhaps. )

> Please let me know if this works and I will include it in the next release.

Thumbs up from me.

/August.
-- 
Bj|rn Augustsson      Sysadmin     IT Systems & Services
Chalmers tekniska h|gskola     Chalmers University of Technology
         "Damn spooky analog crap." -- John Carmack.


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