perfSONAR User Q&A and Other Discussion

[Andrew Gallo <>]

I think I found out what was going on.  Sharing this in case someone 
runs into the same problem.

Andy checked our setup and could see all the data since the tests 
started (thanks for checking, Andy!)

With that information, I started doing some digging--

TL;DR- I think my problem had to do with lack of host names at the start 
of the tests.

Longer version:
I setup two machines for some very specific, short term tests.  I didn't 
create DNS entries, nor did I even bother to make entries in 
`/etc/hosts` for the test partners.  To put another way, node A 
obviously knew it's own hostname, but didn't know the name of it's test 
partner, node B.  I configured all tests by IP address.

When I imported the Endpoint Pair dashboard and gave it a try, I didn't 
see either of my hosts in the source/dest selector.  Grabbing at straws, 
I added appropriate entries in the `hosts` file (eg, in node A, I 
created a local entry for node B).

I did this as one of the last things in the day, and the next day  I 
started seeing data in Grafana.  I didn't associate creating hostnames 
with seeing data in the dashboard right away.

I haven't used OpenSearch before; it appears that names are significant :)

Thank you.




On 2/9/2024 6:59 PM, Andrew Lake wrote:
> Hi,
>
> Hmmm Grafana just sees whatever data is in OpenSearch, so when you install
> Grafana will not affect what data appears. Is the OpenSearch server its
> looking at behind a firewall or could I reach it to take a look?
>
> Also, we have an office hours call next Friday where we could potentially
> do some interactive debugging if needed.
>
> Thanks,
> Andy
>
> On February 9, 2024 at 3:21:14 PM, Andrew Gallo (
> ) wrote:
>
> Greetings:
>
> I've followed the Grafana cookboook (here:
> https://docs.perfsonar.net/grafana_cookbook.html).
>
> I've created and tested the data source and imported the dashboards.
>
> What I'm finding is that Grafana is only displaying data that was
> collected after I completed this installation, even though I have data
> from before that point.
>
> Specifically, I got Grafana / OpenSearch connected yesterday, but when I
> attempted to view 30 days worth of data, I only see graphs for yesterday.
>
> Is this expected behavior?
>
> If I play around with the Grafana query explorer, I can see that the
> time range does change as expected, eg:
> > 90 day
> {\"range\":{\"pscheduler.start_time\":{\"gte\":1699733443050,\"lte\":1707509443050,\"format\":\"epoch_millis\"}}}
>
> > 7 day
> {\"range\":{\"pscheduler.start_time\":{\"gte\":1706904709764,\"lte\":1707509509764,\"format\":\"epoch_millis\"}}},
>
>
>
> But the only data that gets displayed is data from the point of the
> Grafana installation.
>
> Is there a way to use Grafana to display all the data from a perfSONAR
> node?
>
> Thank you.

--
________________________________
Andrew Gallo
The George Washington University

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