Re: Yey Another "NRPE: Unable to read output"

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Why do you print to stderr in perl?
https://nagios-plugins.org/doc/guidelines.html#PLUGOUTPUT

On Sun, Mar 10, 2019 at 8:11 PM Pierre Couderc <pierre-ZaSpn73FS/[email protected]> wrote:

> Having this message with a debian plugin, I have tried a minimum example
> : plugin on the "client" in a /home/nagios :
>
>
> nagios@server:/home/nagios$ ls -lh
> total 8.0K
> -rwxrwxrwx 1 nagios nagios 48 Mar  8 07:08 check_bash
> -rwxrwxrwx 1 nagios nagios 73 Mar 10 09:26 check_pl
> nagios@server:/home/nagios$ cat check_bash
> #!/bin/bash
>
>      echo "CRITICAL-pc "
>      exit 2
> nagios@server:/home/nagios$ cat check_pl
> #!/usr/bin/perl
> #
> #
> #
> use strict;
> print STDERR "CRITICAL-pc\n";
> exit(2);
> nagios@server:/home/nagios$ ./check_pl
> CRITICAL-pc
> nagios@server:/home/nagios$ echo $?
> 2
> nagios@server:/home/nagios$ ./check_bash
> CRITICAL-pc
> nagios@server:/home/nagios$ echo $?
> 2
>
> When executed on the nagios "server" :
>
> root@nagios:~# /usr/lib/nagios/plugins/check_nrpe  -H 192.168.163.1 -c
> check_bash
> CRITICAL-pc
> root@nagios:~# /usr/lib/nagios/plugins/check_nrpe  -H 192.168.163.1 -c
> check_pl
> NRPE: Unable to read output
>
> What do I miss ....?
>
> Why perl (or  python...) plugin does not work ?
>
> Thanks for any help
>
> PC
>
>
>
>

-- 
Beware of programmers who carry screwdrivers!

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<div dir=3D"ltr"><div dir=3D"ltr">Why do you print to stderr in perl?<div><=
a href=3D"https://nagios-plugins.org/doc/guidelines.html#PLUGOUTPUT">https:=
//nagios-plugins.org/doc/guidelines.html#PLUGOUTPUT</a><br></div></div></di=
v><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On S=
un, Mar 10, 2019 at 8:11 PM Pierre Couderc &lt;<a href=3D"mailto:pierre@cou=
derc.eu">pierre-ZaSpn73FS/[email protected]</a>&gt; wrote:<br></div><blockquote class=3D"gma=
il_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,2=
04,204);padding-left:1ex">Having this message with a debian plugin, I have =
tried a minimum example <br>
: plugin on the &quot;client&quot; in a /home/nagios :<br>
<br>
<br>
nagios@server:/home/nagios$ ls -lh<br>
total 8.0K<br>
-rwxrwxrwx 1 nagios nagios 48 Mar=C2=A0 8 07:08 check_bash<br>
-rwxrwxrwx 1 nagios nagios 73 Mar 10 09:26 check_pl<br>
nagios@server:/home/nagios$ cat check_bash<br>
#!/bin/bash<br>
<br>
=C2=A0=C2=A0=C2=A0=C2=A0 echo &quot;CRITICAL-pc &quot;<br>
=C2=A0=C2=A0=C2=A0=C2=A0 exit 2<br>
nagios@server:/home/nagios$ cat check_pl<br>
#!/usr/bin/perl<br>
#<br>
#<br>
#<br>
use strict;<br>
print STDERR &quot;CRITICAL-pc\n&quot;;<br>
exit(2);<br>
nagios@server:/home/nagios$ ./check_pl<br>
CRITICAL-pc<br>
nagios@server:/home/nagios$ echo $?<br>
2<br>
nagios@server:/home/nagios$ ./check_bash<br>
CRITICAL-pc<br>
nagios@server:/home/nagios$ echo $?<br>
2<br>
<br>
When executed on the nagios &quot;server&quot; :<br>
<br>
root@nagios:~# /usr/lib/nagios/plugins/check_nrpe=C2=A0 -H 192.168.163.1 -c=
 <br>
check_bash<br>
CRITICAL-pc<br>
root@nagios:~# /usr/lib/nagios/plugins/check_nrpe=C2=A0 -H 192.168.163.1 -c=
 <br>
check_pl<br>
NRPE: Unable to read output<br>
<br>
What do I miss ....?<br>
<br>
Why perl (or=C2=A0 python...) plugin does not work ?<br>
<br>
Thanks for any help<br>
<br>
PC<br>
<br>
<br>
<br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
 class=3D"gmail_signature">Beware of programmers who carry screwdrivers!</d=
iv>

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