Hi Michael,
I have not looked at this for a long time, but I remember encountering a
similar issue when I worked on this. If you run it again a few seconds
later, it is probably going to return valid metrics. However, that is not a
very useful thing. Also, I can trigger this fairly easily, using:
check_multiple_metrics_warn.sh host='hostname'
checks='ap_busy_workers,more,1,more,2' (the values dont matter, its just a
test).
If I wait a while, run it, it will error, but if I run it again quickly
after, it works. Seems 100% reproducible, so thats helpful. Strangely, it
only seems to happen for "non-default" metrics. Thats is to say, metrics
like load or cpu_idle dont display this behaviour, but apache, or extended
disk metrics do. However, it seems like every "non-default" metric I try
behaves this way.
I cant remember what the cause of this is, possibly the loop at line 83 -
89? I was not the person who solved it last time I saw this, and I dont
have the fixed code to refer to, just very hazy memories. I will see if I
can contact someone who has acess to the (hopefully fixed) code.
Cheers, Michael.
On 28 November 2013 07:52, Michael Durket <[email protected]>wrote:
> I'm testing out the Nagios plugins provided in the nagios directory of
> Ganglia web. There's something odd going on. When I execute:
>
> check_ganglia_metric.sh host=<host name deleted for security>
> metric_name=http_workers_active operator=more critical_value=100
>
> I get the result:
>
> CRITICAL http_workers_active = 117
>
> If I also execute:
>
> /var/www/html/ganglia/nagios/check_multiple_metrics_warn.sh host=<name
> deleted> checks="http_workers_active,more,100,more,200"
>
> I get:
>
> UNKNOWN System check - No metrics returned values
>
> I've tried this with and without the Nagios cache enabled, but the
> inconsistency persists.
>
>
>
>
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