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This document lists all interactions between our services.

Internal Interactions

MyOSG GratiaGraphs

Uses http://gratiaweb.grid.iu.edu

External Interactions

OSG BDII (is.grid.iu.edu:2180 > lcg-bdii.cern.ch:2170)

  • is.grid.iu.edu:2170 (OSG) - Top level BDII for OSG
  • is.grid.iu.edu:2180 (WLCG) - Site level BDII for CERN's top level BDII

CERN pulls data from is.grid.iu.edu:2180 every few minutes according to this script > http://grid-deployment.web.cern.ch/grid-deployment/gis/lcg2-bdii/dteam/lcg2-all-sites.conf [David Collados]

New records and changes in existing records normally show up on lcg-bdii.cern.ch within a few minutes, whereas records deleted at the source are retained for 24 hours, with any Status attributes set to Unknown. [Maarten Litmaath]

Can CERN pull data from port 2170 so that we don't have to provide 2 instances? "No as the suffix used in the dn is Mds-Vo-name=local,o=grid, so all entries will be rejected due to the recursion protection feature." [Laurence Field] But, once we move to OpenLDAP 2.4, we can use its alias feature to overcome this problem.

[Laurence Field]

To create an 'alias' you need to add the following to the slapd.conf file. (For OpenLDAP 2.4)

# Load the required modules
moduleload rwm
moduleload back_relay

# Configure the alias
database        relay
suffix          "Mds-Vo-Name=OSG,o=grid"
overlay         rwm
suffixmassage   "Mds-Vo-Name=OSG,o=grid,Mds-Vo-Name=local,o=grid"

MyOSG XML

Various collaborators uses MyOSG XML as registered in https://docs.google.com/spreadsheet/ccc?key=0AhtN5DbWoILcdE8xYjUtMk9zZlQ3WktMa2lTWV9MOHc#gid=0

Collaborators registers these records via https://docs.google.com/spreadsheet/viewform?formkey=dE8xYjUtMk9zZlQ3WktMa2lTWV9MOHc6MA#gid=0

GratiaWeb (gratiaweb.grid.iu.edu)

GratiaWeb service access following DB to produce graphs based on user requests.

  • gr-osg-mysql-reports.opensciencegrid.org
  • rcf-gratia.unl.edu (for gratia-status)
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