perfSONAR User Q&A and Other Discussion

[Antoine Delvaux <>]

Hello Hervey,

We're looking into this migration, trying to provide a smooth upgrade path 
for MDM deployments.  There are different situations and so different upgrade 
scenarios will be proposed.

To my knowledge, the TEIN MDM nodes you mention are only BWCTL MP (OPPD 
based) hosts.  They only provide a measurement point and do not store data 
locally, so there should be no worry about data loss.

For now those servers should stay with the MDM packages.  We'll continue to 
provide packages from the GÉANT MDM repository during a transition period of 
many months (at least up to the 3.5 toolkit release).  We'll also make sure 
those installations are compatible, as much as possible, with pS toolkits 
deployments so that measurements can be run from and to those hosts.

Then, depending on which deployment level they want to comply with [1] 
they'll need to switch yum repositories (for level 1 or level 2) or be 
re-installed and re-configured with the new pS toolkit (for level 3 
installation, some MDM configuration files might then be re-used after 
re-installation).  There is no hurry for such a migration and we suggest to 
wait a bit after the 3.4 official release that the upgrade paths are fully 
tested.  We'll then advertise and document the different upgrade scenarios.

There are some automatic measurements scheduled between the TEIN MDM nodes 
and some GÉANT hosts.  Those measurements are stored in a centralised GÉANT 
MA (a perfSONAR MDM SQL MA instance) operated and maintained by GÉANT.  We're 
looking at the possibilities to migrate data from this MA to a new 
centralised MA that will use the upcoming MA provided by the 3.4 toolkit.  
This is a long term approach and we don't have the details about that now 
though.

If an SQL MA has been deployed within TEIN or some TEIN partners, a similar 
migration will then also need to take place.  I'm not sure if there are such 
deployments, I don't have that information but will consult with my GÉANT 
colleagues (Szymon Trocha, cced, will probably know more about that).

I hope this answers your current questions, and if some other questions pop 
up during your workshop next week, please forward that here.

Kind regards,

[1] See https://code.google.com/p/perfsonar-ps/wiki/Level1and2Install 

--                                                                --
Antoine Delvaux                                        Skype: toninb
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Le 22 août 2014 à 15:04, Hervey Allen 
<>
 a écrit :

> On 8/22/14 6:42 AM, Brian Tierney wrote:
>> 
>> Looping in the perfsonar-user list, as there are probably others with
>> the same question, and there are folks on that list that can answer.
>> 
>> 
> 
> Excellent.
> 
> Thank you Brian.
> 
> - Hervey
> 
>> 
>> On Thu, Aug 21, 2014 at 10:44 PM, Hervey Allen 
>> <
>> <mailto:>>
>>  wrote:
>> 
>>    I was wondering what this looks like?
>> 
>>    For instance, if you have been using perfSONAR MDM and have prior data
>>    and wish to move over to a perfSONAR PS install?
>> 
>>    I see that Japan, Singapore, China and Hong Kong and India have MDM
>>    instances at TEIN4 POPs. We might have people from these organizations
>>    in our workshop next week in Bangkok and would like to be able to answer
>>    the question of moving to the perfSONAR PS Toolkit.
>> 
>>    Thanks!
>> 
>>    - Hervey
>> 
>> 
>> 
>> 
>> 
>> -- 
>> Brian Tierney, http://www.es.net/tierney
>> Energy Sciences Network (ESnet), Berkeley National Lab
>> http://fasterdata.es.net
>> 
> 
> 
> -- 
> Hervey Allen      Assistant Director, Network Startup Resource Center
> 
>    http://nsrc.org/ : http://facebook.com/nsrc.org
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