Shut Down Process On Another Server

[The Little Guy]

I have 2 servers, one has multiple processes running, and the other has the control panel.

 

on the control panel, I would like to send a command to the other server. the command looks like this:

kill #

 

Where # is the number of the process id.

 

is there any way for me to send a command to that server to shut down that process?

[trq]

Have you looked at ssh? Assuming the server in question is Linux.

[The Little Guy]

is there any ssh for php, other than ssh2?

[trq]

You can easily execute ssh via exec.

[The Little Guy]

I have been trying to do that... but can't figure out how...

 

This is what I found:

exec('ssh -l root xxx.xxx.xxx.xxx; password; command here; logout');

[trq]

You can't simply send the password as the next command, you would need to setup ssh keys (google it). Also note that having root be able to login via ssh poses quite the security risk.

 

Once your keys are setup you would simply use....

 

exec("ssh username@servername commandtoexecute");

[trq]

Actually, thinking about it a bit more. In order for keys to work you will likely need to switch to the user with the keys setup. eg;

 

exec("sudo -u username ssh servername commandtoexecute");

[The Little Guy]

When I use Cygwin, If I type in:

 

ssh username@servername I don't need a password, but if I do ssh servername it asks for a username and a password...

[trq]

When I use Cygwin, If I type in:

 

ssh username@servername I don't need a password, but if I do ssh servername it asks for a username and a password...

 

Is your username in cygwin the same as the one you are pre-pending to the servername in example 1?

[The Little Guy]

This is what I am doing:

exec("ssh ryannaddyps@myserver.com kill $ps"); // $ps is the process number

[trq]

Cool. Does it work?

[The Little Guy]

No

[trq]

Did you try my revised suggestion above using sudo?

[The Little Guy]

Yeah, tried that too, still nothing...

[The Little Guy]

OK, I just opened putty, and tried it in there, connecting to:

ryannaddyps@myserver.com

 

and it asked for a password...

 

Does this mean that the key think isn't working for passwordless logins?

[trq]

What testing have you done? We could go back and forth all day with this lack of information.

 

Test to see if your connection is successful by doing something simpler. eg;

 

exec("ssh ryannaddyps@myserver.com touch foo");

 

Does this make a file called 'foo' within the user ryannaddyps's home directory on the myserver.com machine?

[trq]

OK, I just opened putty, and tried it in there, connecting to:

ryannaddyps@myserver.com

 

and it asked for a password...

 

Does this mean that the key think isn't working for passwordless logins?

 

I'm not sure how keys work with putty. Besides, are you ryannaddyps?

[The Little Guy]

Running this does not make a file called foo

 

<?php
exec("ssh ryannaddyps@myserver.com touch ~/foo");
?>

 

I should be ryannaddyps

[trq]

Then you likely have not setup your keys correctly. What steps did you take?

[The Little Guy]

Your correct I didn't set it up correctly

 

I was reading my wiki and it said to create it on my home computer, which I did, but then I thought and realized that I wasn't connecting via my home computer, it was via another web server.

 

so I did it in putty on the websites server where the script runs, and did the process the same..

 

now it creates a file called foo!

 

Now I wan't to see if it does what I meant for it to do.

[The Little Guy]

There we go!

 

It works now!

 

This is the code I used:

exec("ssh ryannaddyps@myserver.com kill $ps");

 

Thanks a million for your help!!!!!

[trq]

Sweet. You gotta always remember where you are when using ssh.