Am 03.08.2012 17:52, schrieb Ole Tange:
>> How about the "Control" feature of (open-)ssh?
>
> ControlPersist does not exist in my version of ssh.
OK, I checked: It's in my Gentoo (openssh-5.9_p1-r4)
but it's not in Debian Squeeze (openssh-5.5p1-6).
> Can you test if ControlPersist works for this:
>
> seq 100 | parallel -j0 ssh server 'echo {};sleep 2'
I have almost no problems. ('parallel' is to fast, and
the control channel needs some time to be initialized)
So I get several
"ControlSocket already exists, disabling multiplexing"
But in case the control channel has been established
in advance, there are no error messages. So I think
the following should work:
let parallel
- run one "extra" ssh to the target host
- give it time to establish its connections
- run all regular ssh's through this
- close the "extra" ssh when done
This should work on all systems that have the "basic"
ControlMaster feature.
Thomas
