A remote machine script?

your_shadow03 · 01-16-2010, 10:57 PM

I have centOS Machine which is my monitoring Server. I run the belowmentioned command to ssh to remote production server and get back those parametrics metrics.
All I am doing now is manually running these commands 10-15 times .
I am a sudo user in that production.How can I write a script to make it in one shot?

Code:

ssh tom@10.14.236.151 "perl ./monitor count" | /mont/ground/mail.pl
ssh tom@10.14.236.26 "perl ./monitor count" | /mont/ground/mail.pl
ssh tom@10.14.236.25 "perl ./monitor count" | /mont/ground/mail.pl
ssh tom@10.14.236.146 "perl ./monitor count" | /mont/ground/mail.pl
ssh tom@10.14.236.18 "perl ./monitor count" | /mont/ground/mail.pl
ssh tom@10.14.236.20 "perl ./monitor count" | /mont/ground/mail.pl
ssh tom@10.14.236.146 "perl ./monitor count" | /mont/ground/mail.pl
ssh tom@10.14.236.146 "perl ./monitor count" | /mont/ground/mail.pl
ssh tom@10.14.236.20 "perl ./monitor count" | /mont/ground/mail.pl

I explored and took a look at http://kbase.redhat.com/faq/docs/DOC-9195
I tried running :

ssh-keygen

And,

ssh-copy-id -i $HOME/.ssh/id_rsa.pub user@

And they worked fine.
I can also see authorized_key in remote Machine.
Now what next?

evo2 · 01-17-2010, 03:06 AM

How about a little bash loop?

Code:

#!/bin/bash
ips="10.14.236.151 10.14.236.26 10.14.236.25"
for ip in $ips ; do
   ssh tom@${ip} "perl ./monitor count" | /mont/ground/mail.pl
done

Add as many addresses as you like to the ips variable.

Evo2.

your_shadow03 · 01-17-2010, 07:56 AM

What about the ssh password?

colucix · 01-17-2010, 04:05 PM

Basically, you should be ok with password-less authentication. Have you tried to connect to the machine where you copied the public identity with the mentioned ssh-copy-id command? Does it still ask for a password? If this is the case, you have to check the permissions of your private key and of the .ssh directory. More chances to retrieve some useful information if you run ssh using the -v (verbose) option and "listen to" the talk between the local and the remote machines