perfSONAR User Q&A and Other Discussion

["Garnizov, Ivan" <>]

Hello Shahrin,

 

It is always a good idea to put your questions to the perfSONAR user list, unless there is a sensitive information to be shared.

For the general questions you have I believe these do belong to the list, hence I added the user list there.

 

I will start here with the simple answers:

What is the function of the communities I have given while configure the Administrative Information?

Perhaps communities can be clarified better in the docs, but still there is one: http://docs.perfsonar.net/manage_admin_info.html

pS Dev expectation is that communities is a self-explanatory term, still the description introduces another one: Global node directory page, but actually misses the link. The link is anyway present on your pS Toolkit web interface.

Anyway ‘communities’ allows you to more easily find pS nodes of your and common interest, with which you would often create measurements. Please keep in mind there is no structured approach in the names and anyone can register in any group, so you might be misled by the community name in the end.

 

Can I choose any host randomly or I have to choose host regarding my configuration?

Of course you can choose any host you find or know. It is a good practice to contact the remote admin and inform him or even seek approval.

Still adding a random pS node to your test scheme, does not automatically mean you’ll be able to measure with it.

There are all sorts of problems, that can happen in real life situations:

-          General connectivity issues

-          FW issues

-          Schedule availability issues

-          Even policy issues

Resolving these requires you to diagnose the network connectivity to the remote party and perhaps even in cooperation with the remote party.

It often requires you to run yourself from the command line the tests you find failing.

 

I don't understand if the testing is working or not, though one is working but I am not getting what is the problem with the others.

From the shared image it is obvious there are tests, that run and other that fail. I would then expect there are specific issues for each of the failures you observe.

Please note perfSONAR Toolkit web interface cannot be used as a network connectivity diagnostic tool. The web interface is for management of measurement tasks and review of the results, which are expected to be well established in advance. It is a great relief for people who do not want to know and understand the underlying processes, but rely on other experts to do these.

In order to gain better understanding of the underlying problems you’ll have to go to the CLI, review the logs of pS services and event run some pS commands from the CLI.

For any of the specific problems you observe, please describe with:

-          Measurement description: hosts, test type … the command itself

-          Any logs or observations you may have

 

 

Here is a list of the log files of pS services: http://docs.perfsonar.net/manage_logs.html

Here is the doc on how to run measurements from CLI: http://docs.perfsonar.net/pscheduler_client_tasks.html

Here are some examples ( slide 22 and later ): https://www.perfsonar.net/media/medialibrary/2017/09/22/201709-perfSONAR-12-Overview-4.0-webinar-v2.pdf

 

 

Best regards,

Ivan

 

Von: shahrin sharif [mailto:]
Gesendet: Dienstag, 12. Februar 2019 16:36
An: Garnizov, Ivan (RRZE) <>
Betreff: Re: Regarding the Installation of PerfSONAR toolkit.

 

I don't understand if the testing is working or not, though one is working but I am not getting what is the problem with the others. Can I choose any host randomly or I have to choose host regarding my configuration? What is the function of the communities I have given while configure the Administrative Information?

 

 

I hope you can help me with this.

 

Thanking you,

 

SHAHRIN SHARIF

 

Phone: (803) 447-3981

Email:

Skype: sharif.shahrin_2

 

 

On Fri, Feb 8, 2019 at 4:51 AM Garnizov, Ivan <> wrote:

Hello Shahrin,

 

Indeed you wouldn’t find how to configure your hostname in Linux under the perfSONAR documentation. Here are instructions from a third party: https://www.tecmint.com/set-hostname-permanently-in-linux/ . Please take care on the steps. For further support on these you should seek their or similar support, since it is outside of perfSONAR management.

To have perfSONAR web UI to display your hostname the server IP addresses have to be resolvable to the desired hostname. Here is documentation on the topic: https://www.oreilly.com/library/view/linux-network-administrators/1565924002/ch06.html (Again please note this is a third party documentation)

 

With regards the further steps needed to access the web interface please follow these instructions: http://docs.perfsonar.net/manage_users.html?highlight=managing%20users

 

Best regards,

Ivan

 

Von: [mailto:] Im Auftrag von shahrin sharif
Gesendet: Donnerstag, 7. Februar 2019 22:09
An:
Betreff: Regarding the Installation of PerfSONAR toolkit.

 

Hi, I am Shahrin Sharif. I am installing the PerfSONAR toolkit on VMware. I need to proceed here. All the previous steps are done. Please let me know how to access the web interface and how would I know my hostname. I am not getting it as it does not contain any screenshot.

Your help would be highly appreciated.

 

Thanking you,

SHAHRIN SHARIF

 

Phone: (803) 447-3981

Email:

Skype: sharif.shahrin_2