perfSONAR User Q&A and Other Discussion

[Ralph Niederberger <>]

Dear all,

sorry for the, may be stupied, questions.

1.) Could someone tell me, if I have to generate data myself for e.g. 
the SQL MA service.
    The perfSONAR MDM 3.1 admin guide states at page 43:
    "The SQL MA stores link data that is collected by measurement 
tools. ..."
    So, who stores?  Do I have to make an snmp request myself and put 
the data via
    mysql statements into the tables provided, i.e. configured in SQL 
MA or does the
    SQL MA tool retrieve and store the measurement data itself?

2.) If I would like to control several interfaces, do I have to create 
different discard,
    error and utilization mysql tables for every interface or can I 
differ between the
    interfaces by storing the info with different "metadataId"s?

3.) What are the dependencies between Tomcat server, exist database 
configurations
    and e.g. SQL databases? E.g. what are the dependencies when SQL MA 
stiching
    is done. Especially if you change some configurations afterwards, 
e.g. change/add 
    sql tables, which services have to restarted and in which 
chronological orders do
    they have to be restarted.

Thanks in advance

Ralph

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Ralph Niederberger
Juelich Supercomputing Centre
Institute for Advanced Simulation

Phone:  +49 2461 61-4772
Fax:    +49 2461 61-6656
E-Mail: 

WWW:    http://www.fz-juelich.de/jsc/

JSC is the coordinator of the
John von Neumann Institute for Computing
and member of the
Gauss Centre for Supercomputing
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Forschungszentrum Jülich GmbH
52425 Jülich

Sitz der Gesellschaft: Jülich
Eingetragen im Handelsregister des Amtsgerichts Düren Nr. HR B 3498
Vorsitzende des Aufsichtsrats: MinDirig'in Bärbel Brumme-Bothe
Geschäftsführung: Prof. Dr. Achim Bachem (Vorsitzender),
Dr. Ulrich Krafft (stellv. Vorsitzender), Prof. Dr. Harald Bolt,
Dr. Sebastian M. Schmidt 

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