[naemon-users] Naemon macros as environment

Magnus magnus at boden.cx
Thu Mar 19 13:19:04 CET 2015

Adding $OVE at the end made it work again.

I will file a bug report.

Thanks for the help

On 2015-03-19 08:59, Max Sikström wrote:
> The resoning is totally valid, that you should add the variables as 
> you do there
> However, since naemon tries to execute the command line as fast as 
> possible, it tries to determine if the command line is complex or not, 
> thus if it is complex, it should start it thorugh a shell. Otherwise 
> it starts it directly through execvp (or similar).
> In your case, it looks like you just have: VAR="value" command, and no 
> environment variables or such.
> Looking at the source, there should be a couple of ways to trigger the 
> complext-command-line-criteria if outside quotes:
>  - Add a random environment variable as an extra argument, if that 
> should work (a $ sign in the command line, after macros is expanded)
>  - the characters ; and | (potential job control)
>  - the characters * and ? (potential wildcards)
>  - parenthesis
>  - &
> I suggest trying to add a ;, since that shouldn't really affect 
> anything, if nagios can handle that. It can at least be added as a 
> $USERn$-variable, and then append that USER-vairable to the command line.
> Also: File a bug report to the github page, since this is a potential bug.
> Best Regards,
> Max Sikström
> On Wed, Mar 18, 2015 at 10:25 PM, Magnus <magnus at boden.cx 
> <mailto:magnus at boden.cx>> wrote:
>     Hello,
>     I run nagios for a few organisations and write a lot of plugins
>     myself for checkpoint firewalls and other networking equipment.
>     My plugins rely on some macros to be available as environment
>     variables and I just switched my first nagios qa environment to
>     naemon which was pretty smooth except for the macro part.
>     I found in the documentation of naemon
>     (http://www.naemon.org/documentation/usersguide/macros.html) that
>     I should specify my macros in the command and I understand the
>     logic behind not evaluating all macros:
>     define command {
>         command_name    my_old_notification_script
>         command_line    NAGIOS_HOSTNAME="$HOSTNAME$"
>     /usr/local/bin/notifiy.pl <http://notifiy.pl> ...
>     }
>     But this doesnt work for me when my plugin is run naemon says this
>     on the service output.
>     (No output on stdout) stderr: execvp(NAEMON_HOSTNAME=SC_cswitch01,
>     ...) failed. errno is 2: No such file or directory
>     Is there something wrong with my setup or is the documentation wrong?
>     define host {
>         host_name       linuxbox
>         address
>         _MACADDRESS     00:01:02:03:04:05
>         ...
>     }
>     Also it would be great if at least the custom macros could be made
>     available as environment variables. They will never be many so I
>     think from a performance standpoint they should not cause to much
>     overhead. Are they available as environment variables now?
>     Thanks for all the hard work you put into this and I really
>     appreciate naemon which I anticipate will have a much faster
>     development rate than nagios and already includes more modern
>     components than nagios-core (like thruk and livestatus).
>     Best Regards
>     Magnus

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