[rancid] Netscreen/OpenSSH interaction problem

Post by Michael W. Lucas
Hi,
I've found myself inheriting responsibility for a stack of Netscreen
boxes, and of course I want their configurations backed up.
There's a problem with interactions between newer versions of OpenSSH
and Netscreens, however. To SSH into a Netscreen with newer OpenSSH,
you must add the option "-o ControlMaster=auto" to the SSH command
line.
Is there any way to pass this option to the Rancid SSH command for my
Netscreen hosts?

see sshcmd in cloginrc(5). If I failed to disseminate that change to
all of the login scripts, we can fix that.

Post by Michael W. Lucas
Thanks,
==ml
--
http://www.BlackHelicopters.org/~mwlucas/
Latest book: Cisco Routers for the Desperate, 2nd Edition
http://www.CiscoRoutersForTheDesperate.com/
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Michael W. Lucas

2009-05-19 21:12:11 UTC

see sshcmd in cloginrc(5). If I failed to disseminate that change to
all of the login scripts, we can fix that.

That was exactly it, thanks!

For anyone following along in the archives: you'll want to use a
wrapper script much like the following. Trying to escape spaces with
backslashes, quote marks, etc., doesn't appear to work.

--
#!/bin/sh

exec ssh -oControlMaster=auto $@
--

john heasley

2009-05-19 21:23:07 UTC

see sshcmd in cloginrc(5). If I failed to disseminate that change to
all of the login scripts, we can fix that.

That was exactly it, thanks!
For anyone following along in the archives: you'll want to use a
wrapper script much like the following. Trying to escape spaces with
backslashes, quote marks, etc., doesn't appear to work.
--
#!/bin/sh
--

i'd have expected
add sshcmd * {ssh -o...}

would have done it

john heasley

2009-05-19 21:24:00 UTC

see sshcmd in cloginrc(5). If I failed to disseminate that change to
all of the login scripts, we can fix that.

That was exactly it, thanks!
For anyone following along in the archives: you'll want to use a
wrapper script much like the following. Trying to escape spaces with
backslashes, quote marks, etc., doesn't appear to work.
--
#!/bin/sh
--

i'd have expected
add sshcmd * {ssh -o...}
would have done it

Sorry for the extra mail, I should have written:

add sshcmd * {ssh\ -o...}

Michael W. Lucas

2009-05-20 18:23:40 UTC

see sshcmd in cloginrc(5). If I failed to disseminate that change to
all of the login scripts, we can fix that.

That was exactly it, thanks!
For anyone following along in the archives: you'll want to use a
wrapper script much like the following. Trying to escape spaces with
backslashes, quote marks, etc., doesn't appear to work.
--
#!/bin/sh
--

i'd have expected
add sshcmd * {ssh -o...}
would have done it

add sshcmd * {ssh\ -o...}

Thanks for the help, your way certainly would be nicer.

I added this to my clogin:

add sshcmd aubvp003 {ssh\ -oControlMaster\=auto}

# clogin aubvp003
aubvp003
spawn {ssh\ -oControlMaster\=auto} -c 3des -x -l netscreen aubvp003

Error: {ssh\ -oControlMaster\=auto} failed: couldn't execute "": no such file or directoryerror setting blocking mode: resource temporarily unavailable
#

Any thoughts? (Not recalling if = needs an escape, I tried both with
and without.)

Thanks,
==ml

john heasley

2009-05-20 19:20:46 UTC