perfSONAR User Q&A and Other Discussion

[Jack Wallis <>]

Just an FYI in case anyone ever comes across this issue.

 

We found an issue in the Esmond logs on the MA that seemed to point to an issue with not being able to connect to the Cassandra db on its port.  This led us to seeing that Cassandra exited as soon as the service was started.    When we looked at the logs within Cassandra itself, and after a bit of googling, we found it was caused by an issue with Cassandra and the version of Java we had (version 10).  The fix was to downgrade the java version to 8 (as it was also apparently an issue in Java 9).

 

We restarted Cassandra service, which remained active, and allowed Esmond to connect to the Cassandra instance.

 

All working, now, but thanks for everyones help.

 

Cheers

Jack

 

 

 

Jack Wallis​

Core Network Specialist

T & SfB: +44 1612 680 003

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From: <> On Behalf Of Valentin Vidic
Sent: 12 March 2019 10:26
To:
Subject: Re: [perfsonar-user] Maddash Dashboard Grid is Down

 

On Tue, Mar 12, 2019 at 09:29:23AM +0000, Jack Wallis wrote:
> I tried both http, and https just to make sure I got the same result.
>
> In the apache access.log I get the following result:
>
> 10.149.196.250 - - [11/Mar/2019:14:29:16 +0000] "GET /esmond/perfsonar/archive/?destination=10.149.196.14&source=10.149.196.10&event-type=packet-loss-rate&time-range=2700 HTTP/1.1" 200 220 "-" "-"
> 10.149.196.250 - - [11/Mar/2019:14:44:20 +0000] "GET /esmond/perfsonar/archive?time-range=2700&event-type=packet-loss-rate&destination=10.149.196.2&source=10.149.196.14 HTTP/1.1" 301 1746 "-" "-"
> 10.149.196.250 - - [11/Mar/2019:14:44:20 +0000] "GET /esmond/perfsonar/archive/?time-range=2700&event-type=packet-loss-rate&destination=10.149.196.2&source=10.149.196.14 HTTP/1.1" 200 249 "-" "-"
> 10.149.196.250 - - [11/Mar/2019:14:44:28 +0000] "GET /esmond/perfsonar/archive?time-range=2700&destination=10.149.196.2&event-type=packet-loss-rate&source=10.149.196.14 HTTP/1.1" 301 322 "-" "-"
> 10.149.196.250 - - [11/Mar/2019:14:44:28 +0000] "GET /esmond/perfsonar/archive/?time-range=2700&destination=10.149.196.2&event-type=packet-loss-rate&source=10.149.196.14 HTTP/1.1" 200 220 "-" "-"

Try opening the same URLs, but from the size it seems like they are not
finding any results? Could it be the packet-loss-rate tests are not
running often enough for time-range=2700?

--
Valentin Vidic
Computer Systems Engineer - Expert
Department of Computer Infrastructure and Services
Croatian Academic and Research Network - CARNET
Josipa Marohnica 5, HR-10000 Zagreb, Croatia
tel: +385 1 6661 714, fax. +385 1 6661 635
gsm: +385 91 2480 919
www.CARNet.hr

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