Marcy Cortes wrote:
Sorry for that signature stuff on the previous attempt at mailing.
--------------
I use xargs like:
Like: cat linuxes | xargs -t -i{} ssh {} ls /root
If one wraps "ssh {} ls /root" in another script (and maybe include
stuff the mail the report), then
xargs -P 5 ...
is possible and, on larger numbers of hosts and/or where hosts are
remote then things can be speeded up handily.
Here's how I update Debian* boxes remotely:
06:40 [EMAIL PROTECTED] ~]$ cat bin/deb.update
#!/bin/bash
set +x
for h in $(cat ~/.etc/coco.hosts)
do export h
if [ -n "${DISPLAY}" ] ; then
h=$h xterm -geometry 90x25 -fg black -bg white \
-fn \
-adobe-courier-medium-r-normal--12-120-75-75-m-70-iso8859-1 \
-e bin/deb.update1&
else
openvt -s -- bin/deb.update1
fi
done
06:40 [EMAIL PROTECTED] ~]$ cat bin/deb.update1
#!/bin/bash
clear
echo Connecting to ${h}
ssh -C -t ${h} sudo bin/update
06:40 [EMAIL PROTECTED] ~]$
* That was the intention. bin/update can, of course, do equivalent
processing on RHEL, SLE{S,D}, Slack - anything.
I don't use xargs, but it would scale better if I did and limited it to,
say, six at a time - because in my cases, bin/update is marginally
interactive.
Marcy Cortes
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-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
Michael MacIsaac
Sent: Thursday, July 12, 2007 8:45 AM
To: [email protected]
Subject: [LINUX-390] Wrapper around SSH to run command on mutliple
Linuxes?
Hello list,
Does anyone have a simple wrapper around SSH to run the same command on
multiple Linuxes?
If I have key-based authentication set up from one server to another
server, call it "linux01", I can issue the command:
# ssh linux01 ls /root
bin
and see the output from linux01 without needing a password.
But let's say I'd like to issue that command on 5 different linuxes. I
could call the command dssh and define a group "linuxes" that consist of
linux01-linux05. Then I could issue the command:
# dssh linuxes ls /root
linux01:
bin
linux02:
bin
linux03:
bin
linux04:
bin
linux05:
bin
and see the output from each member in the group.
I thought about cobbling together a script, but certainly this has been
written. Maybe there's already an RPM in my distro that just has to be
installed.
--
Cheers
John
-- spambait
[EMAIL PROTECTED] [EMAIL PROTECTED]
Please do not reply off-list
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