how to start script at remote host

Vijayababu · 11-13-2010, 07:28 AM

Hi all, i want to start a shell scripts(which generate traffic to test my network) at remote linux hosts from single linux local host.. If i start script at remote host through ssh, all traffic are sending from my local host also. It will create burden on my local host. If i terminate SSH connection, it stopping the script at remote host. Also i need to do ssh to all my remote hosts.

Is there any best way to do it?

acid_kewpie · 11-13-2010, 07:29 AM

nothing to do with networking. moved to Linux - Newbie.

As far as your question goes, for the part about it terminating remotely on disconnect, then that's something "screen" is very useful for, check that out. The first things you mention I don't really understand. How does all the traffic come over ssh??

rylan76 · 11-15-2010, 09:07 AM

Why not use cronjobs on your remote hosts to start the network traffic you want?

That should make any traffic emanate FROM the remote systems, not your local system.

Vijayababu · 11-23-2010, 07:44 PM

Thanks you rylan76.

I tried cronjob but no success as cronjob is new for me. i added entry in crontab like
1 * * * * /usr/local/bin/script.sh (i kept script in /usr/local/bin folder and in script i'm just opening "xterm -e ping 192.168.x.x" . here in remote host what i want is , open xterm and ping from that.

but when give reboot in crontab (1 * * * * /sbin/reboot), system rebooted properly. any suggestion here.

Thanks in advance.

Tinkster · 11-23-2010, 08:13 PM

The problem is most likely the xterm. Why do you feel
you need to fire up a gui element to issue a ping?

Also: what's the goal of the exercise?

Cheers,
Tink

smart_shell · 11-23-2010, 09:55 PM

Quote:

Originally Posted by Vijayababu

Hi all, i want to start a shell scripts(which generate traffic to test my network) at remote linux hosts from single linux local host.. If i start script at remote host through ssh, all traffic are sending from my local host also. It will create burden on my local host. If i terminate SSH connection, it stopping the script at remote host. Also i need to do ssh to all my remote hosts.

Is there any best way to do it?

How to start script at remote host.
1. U can using "NC" TCP/UDP listner http://linux.die.net/man/1/nc (nc -l 1234 > filename.out )
2. Cron started every min your (shell script) and looks file output. Reads command from file, clears file(echo -n > filename.out)
3. if there is something then start your traffic script.
thnx

Vijayababu · 11-24-2010, 07:58 PM

Thanks for reply..
my setup model is like below,

|-----[H2]----> internet
|
[H1]-|-----[H3]----> internet
|
|-----[H4]-----> internet

my goal is i need to start traffic like ftp, http, ping , iperf from H2, H3, H4 to destination hosts on internet.

So i want to achieve it from H1. so i'm keeping some scripts for traffic mention above on H2, H3, H4 and starting those scripts from H1.