Unable to see RAM used details on Grafana for CentOS release 6.9 (Final)

Hi Team, we are not able to get the RAM usage details on the Grafana dashboard, Datasource we are using is Prometheus, below are the versions:
We are using node_exporter full to collect the data from the host machines

Host kernel version: CentOS release 6.9 (Final) - 2.6.32-696.20.1.el6.x86_64
Grafana server version: 7.3.7
Prometheus Version: 2.13.1

Any leads will be helpful.


Hi @abhishekanvekar,

Have you enabled the swap file on your CentOS server? If not, then I believe SWAP Used will return an empty value and default to N/A. That’s what I’m getting on my Ubuntu machines and I’m using the Node Exporter Full dashboard straight out-of-the-box.

Let’s try and test this. Go to the Explore feature in Grafana and select your Prometheus datasource. Now try the following query:


Does this return any data?