Graphite-Web and Carbon-cache test data error

I'm installing Graphite and Grafana on RHEL 7.x.

I've followed the IAG v1.4, up to the section where I send test data;


<< echo "test.metric 50 `date +%s`" | nc 2003 >>


I cannot see the data in the Graphite  web, on port 81.


In addition, I see that there is a 'test' directory created in the ../storage directory, however, it is owned by root:root.


Has anyone encountered this issue, or know what I could be doing wrong?