Swap Used Incorrect Value

[gregeeh]

Hi all,

I’ve just installed Grafana, Prometheus and Node-Exporter in a Portainer Stack on my OMV NAS, (Debian), and I have a question regarding the Swap Used value shown in the Node Exporter Full Dashboard.

As you can see it is showing N/A. I know the present size is zero so why not show this and not N/A.

root@omv:~# free -h
               total        used        free      shared  buff/cache   available
Mem:            15Gi       8.2Gi       352Mi       2.3Gi       9.6Gi       7.3Gi
Swap:             0B          0B          0B
root@omv:~#

Sorry about the noob question, just started using this.

TIA

[ebabeshko]

If you switch to the table view, can you see that your query actually returns the necessary data?

[gregeeh]

Thanks for the reply.

Table view shows NaN:

However Explore shows zero:

[ebabeshko]

So it looks like some problem with a query itself…

Probably you can change NaN to 0 using Value mappings:

But it would be better to investigate what is wrong with the query.