CMK version: 2.1.0p27 OS version: Appliance Version 1.6.4
Hi all,
I’m experiencing a rather frustrating issue with the InfluxDB connector. It appears to me that values forwarded to my InfluxDB instance are reduced in precision. For example a metric value of 19769042.01454 (taken from the check_mk-if64 check) is reduced to 19.769.000 in my InfluxDB.
My InfluxDB instance is “vanilla” so no consolidation functions etc are configured.
I’ve been in contact with the Checkmk support, but was told, that decimal numbers with “arbitrary” precision are not supported in any way. I find this very peculiar because for one thing, the precision offered are a mere 6 digits and the RRD files contain values of up to 11 digits. I would at least expect to find the same precision in my InfluxDB as in the RRD files.
Has anyone observed a similar phenomenon or could have a look at their InfluxDB to maybe double check?
I’ve already tried to add the values manually via CSV import to my InfluxDB and they are imported without any problem and with the full precision.
No, but visualisation is not the problem here. I want to pass the values along to my accounting department and would therefore like to keep the values at the highest precision possible.
Kind’a yes. I have seem deviations from when, as you did export graphs as CSV and then compare the timestamp and values in InfluxDB.
We also had issues where it looked like it was the “max” value that was sent, and not the raw data from the agent that Influx DB processed It was not consistent along checks either iirc.
I didn’t have time to further investigate and just put the problem on the backburner (Also watching any WERKS around Influx DB…)
So I would imagine what you are experience might be true and a bit worrying as you sometimes need good precision, at least for things like storage/networking.
Now when Influx DB do handle services that does not have any performance data we might need to push our Influx DB work.
I guess you are using the Influx db 2.0? Or are you using Graphite?
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