I'm trying to write a custom SSH Sensor that shows how many active calls there are in my Asterisk server. This is my script:

#!/bin/bash
CALLS=$(asterisk -rx 'sip show channels' | grep ulaw | wc -l)
echo "0:$CALLS:OK"

Every time I run it, I get this error: Response not wellformed: "/var/prtg/scripts/activecalls.sh: line 2: asterisk: command not found 0:0:OK " (code: PE132)

Help!!

Article Comments

Could you please try to format the code of your script as it appears in the script file? I suppose the script doesn't have all the commands in one line.


Feb, 2015 - Permalink

Dear skyeblue

For additional debugging please activate "Write result to disk" in the sensor settings and check the input the SSH Script Sensor gets. The sensor should get a message like

0:0:OK

or a similar message.


Feb, 2015 - Permalink

Heres the results:

What is "echo PAESSHSTART;"?

[ping@li230-75 ]$ echo PAESSHSTART;/var/prtg/scripts/activecalls.sh ;echo;echo PAESSHEND;exit PAESSHSTART /var/prtg/scripts/activecalls.sh: line 2: asterisk: command not found 0:0:OK

PAESSHEND logout [H[J


Feb, 2015 - Permalink

I figured it out. I was using a non-root user, and only root can execute on the asterisk cli. For reference, I've written a small applet for others to get around this restriction.

int main (int argc, char *argv[])

{
  argv[0] = "/usr/sbin/asterisk";

  argv[1] = "-rx";

  argv[2] = "sip show channelstats";

  execv(*argv, argv);

}

Compile that with GCC:

$ gcc calls.c -o calls

and then let it run as root:

$ sudo chown root dialplan-reload
$ sudo chmod u+s dialplan-reload

I hope this is helpful!


Feb, 2015 - Permalink

Thank you for posting the solution to your problem.


Feb, 2015 - Permalink