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

Grafana Configuration
1

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

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Any leads will be helpful.

Thanks,
Abhishek

2

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:

node_memory_MemTotal_bytes

Does this return any data?

3

No, it did not return any data.