Zabbix 2.2 doesn't accept returned values from external check

[masierovinicius]

Hello Fellas!

Im having a problem with a external check. My script returns all tha values correctly, without problems. But zabbix shows me a error to each item.

An Example: Received value [1] is not suitable for value type [Numeric (float)]

in case, i think "1" is a Numeric(Float). But Zabbix doesn't thinks the same.

Follow a print from error in attachment.

Can someone help me?

[tchjts1]

1 is not a float. It is an integer.

[masierovinicius]

hmm, ok, thanks for reply.

Which option i choose then? Numeric Unsigned shows me the same error...

[filipp.sudanov]

1 should be fine for both Unsigned and Float.

Can you run the following command, may be your script returns some additional characters:

$./our_script.sh | hexdump -C

If the result is just 1, the output should be like this:

00000000  31 0a                                             |1.|
00000002

Also check the output of this script under "zabbix" user.

[masierovinicius]

Thanks Filipp!

The output with hexdump -C:

00000000  0a 0a 31 0a                                       |..1.|
00000004

Can i use custom multiply to resolve? Is ..1. the same as 0,01?

[filipp.sudanov]

Your script is outputting new line character (0a) twice before the value. On the right hexdump prints it as dot (.), since it prints all control characters in this way.
You have to get rid from that double 0a 0a.

[masierovinicius]

Thanks for your reply!

how i can remove this newlines?

i tried some ways (preg_replace, trim) but no one worked.

follow my script:

#!/usr/bin/php

<?php

require('mtapi.php');

list($script, $user, $pass, $host, $key) = $argv;

$API = new routeros_api();

$API->debug = false;


if ($API->connect($host,$user,$pass)) {


  $output = $API->comm("/interface/wireless/registration-table/getall",false);


  $return = 0;


  switch($key) {

    case "rx-rate":

    case "tx-rate":

    case "tx-ccq":

    case "signal-strength":

      $column = array_column($output,$key);

      $return = array_sum($column)/sizeof($column);
 break;

    case "noise":

      $signal = array_column($output,"signal-strength");

      $snr = array_column($output,"signal-to-noise");

      $return = (array_sum($signal) - array_sum($snr)) / sizeof($snr);

      break;


    case "clients":

      $return = sizeof($output);

      break; }

  $trimmed = preg_replace('/\s/',' ', $return);

  printf("%d\n",$trimmed);




  $API->disconnect();



}

[Parasin]

The problem is in this line:

printf("%d\n",$trimmed);

Just change it to this:

printf (%d, $trimmed);

[masierovinicius]

Thank you for your reply Parasin.

My problem is the two newlines before the variable.

The line:

printf (%d, $trimmed);

Doesn't worked because there is not quotation marks. With "" the problem remains the same.

[masierovinicius]

I belive the problem in my script is the API function. In your execution, The interpreter put two newlines before the output.

$API = new routeros_api();

$API->debug = false;


if ($API->connect($host,$user,$pass)) {

$API->disconnect();


}

I tested without return of any values and the script continued to put the two newlines.

Someone have a idea?

[masierovinicius]

Hello Everybody!

I resolved the mystery.

The problem was blanklines after "#!/usr/bin/php" in my script and blanklines in mtapi.php, which was in require on my script, after the "?>" in the final.

Simple problem, but was resolved.

Thanks for your help guys, you helped me so much.

Good work for all!

Regards!