NagiosGrapher: How do the links work?

[Arno Lehmann]

Hugo,

you're quite busy :-)

On 1/27/2006 9:58 PM, Hugo van der Kooij wrote:
> Did some more debugging: The section below seems to be having a bit of a
> problem:
> 
>             # If the RRD not exists:
>             if ( !( -e $file ) ) {
> 
>                 # Adding Graph Value Key's
>                 foreach (@blocks) {
>                     if ( $service =~ /$_->{service_name}/ ) {
> 
>                         # change the default rrdtype if a different is defined
>                         my $rrd_type = "GAUGE";
>                         $rrd_type = $_->{rrd_type} if ( exists( $_->{rrd_type} ) );
> 
>                          # setting the heartbeat#
>                         if (!defined($heartbeat)) {
>                                 $heartbeat = $default_heartbeat;
>                                 $heartbeat = $_->{heartbeat} if ( exists( $_->{heartbeat} ));
>                         }
> 
>                         # setting the step
>                         if (!defined($step)) {
>                             $step = $default_step;
>                             $step = $_->{step} if ( exists( $_->{step} ));
>                         }
> 
>                         push @system,
>                           "DS:"
>                           . $_->{graph_value} . ":"
>                           . $rrd_type
>                           . ":". $heartbeat. ":U:U";
>                     }
>                 }
> 
>                 # Adding some default average frames
>                 push @system, "RRA:AVERAGE:0.5:5:$heartbeat";
>                 push @system, "RRA:MAX:0.5:5:$heartbeat";
>                 push @system, "RRA:MIN:0.5:5:$heartbeat";
>                 push @system, "RRA:AVERAGE:0.5:30:$heartbeat";
>                 push @system, "RRA:MAX:0.5:30:$heartbeat";
>                 push @system, "RRA:MIN:0.5:30:$heartbeat";
>                 push @system, "RRA:AVERAGE:0.5:120:$heartbeat";
>                 push @system, "RRA:MAX:0.5:120:$heartbeat";
>                 push @system, "RRA:MIN:0.5:120:$heartbeat";
>                 push @system, "RRA:AVERAGE:0.5:1440:$heartbeat";
>                 push @system, "RRA:MAX:0.5:1440:$heartbeat";
>                 push @system, "RRA:MIN:0.5:1440:$heartbeat";
> 
> Which I noticed with the following (DEBUG) line added for debugging
> purposes:
> 
>                 if($opt_verbose & $LOG_RRD_STATUS) {
>                         $dummy="";
>                         foreach (@system) {
>                                 $dummy.=$_. ' ';
>                         }
>                         print_log("DEBUG: step=$step defaultstep=$default_step heartbeat=$heartbeat defaultheartbeat=$default_heartbeat");
>                         print_log("RRD: rrdtool create $file --step=$step $dummy");
>                 }
> 
> Both $step and $heartbeat were empty for these cases. And the log is
> missing the DS sections all together. I seem to have the fixed the $step
> issue a bit the missing DS is a real killer.
> 
> I need to do even more debugging here.

Hmm. As far as I can see, the problem seems to be the line

if ( $service =~ /$_->{service_name}/ ) {

if that condition isn't true, $heartbeat, $step and the DS definition 
aren't done. Just what we observed. (I at least intermittently.)

Since you seem to work on the code currently: Where do $service and $_ 
in the above section come from?

Arno

> Hugo.
> 

-- 
IT-Service Lehmann                    al at its-lehmann.de
Arno Lehmann                  http://www.its-lehmann.de


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