(OVA Graylog v2.4.3+2c41897)
I’m trying to display values (cpu) throught an extractor from a syslog message in order to display it on a chart.
The extractor seems to works fine : I can get the cpu value with the extractor, and the value is well displayed as a field on my stream.
But when I try to display it on a chart (value max, min, mean …), the value is always zéro.
When I display the statistics of my extracted field, the displayed values are “Nan” (except total & cardinality)
It look like my my extracted field value is not seen as a number.
I have tried with the extractors substring, regexp (both with number conversion) and grok, with the same result.
Any idea about how I can display this extracted value ?