The EMIR configuration for CREAM

The EMIR-SERP allows CREAM to publish all its relevant information already available in the local resource BDII to a specified EMI Registry (EMIR) DSR.

The configuration can be explained by simple steps:

• check if the resource BDII is up and running by executing

  ldapsearch -x -h localhost -p 2170 -b 'GLUE2GroupID=resource,o=glue' objectCLass=GLUE2Service
     

  the command should list the CREAM service(s) installed on the machine. If this is not the case, please check the CREAM configuration
• install the emir-serp

  sudo yum install emir-serp
     

• edit the configuration file /etc/emi/emir-serp/emir-serp.ini, providing the URL for the EMIR DSR and the URL for the resource BDII

  ...
  url = http://emitbdsr1.cern.ch:9126
  ...
  [servicesFromResourceBDII]
  resource_bdii_url = ldap://localhost:2170/GLUE2GroupID=resource,o=glue
  ...
     

• you can change the update interval

  # Period of registration/update messages
  # Mandatory configuration parameter
  # Value is given in hours
  period = 1
     

• and the time EMIR will be told to consider the information valid

  # Time of registration entry validity
  # Mandatory configuration parameter
  # Value is given in hours
  validity = 2
     

• you might want to set the logging level to debug the first time you start the service

  verbosity = debug
     

• start the service

  sudo service emir-serp start
     

• check the log file for an entry like

  2013-01-09 12:49:22,359 DEBUG EMIR service on url 'http://emitbdsr1.cern.ch:9126' is running since Mon Nov 26 14:09:35 CET 2012
  2013-01-09 12:49:22,359 DEBUG Daemon starting...
  2013-01-09 12:49:22,373 DEBUG Daemon started
  2013-01-09 12:49:22,373 DEBUG Registering service entries
  2013-01-09 12:49:22,374 DEBUG Retrieving data from ldap://localhost:2170/GLUE2GroupID=resource,o=glue
  2013-01-09 12:49:22,394 DEBUG REGISTRATION: Endpoint ID: cream-27.pd.infn.it_org.glite.ce.CREAM; URL: https://cream-27.pd.infn.it:8443/ce-cream/services
  2013-01-09 12:49:22,394 DEBUG REGISTRATION: Endpoint ID: cream-27.pd.infn.it_ComputingElement_org.glite.ce.ApplicationPublisher_1068561884; URL: gsiftp://cream-27.pd.infn.it:2811/opt/glite/var/info
     

  It is recommended to set back the logging level to error and restart the service.
• stopping emier-serp will cause the entry to be deleted from the registry.

-- LisaZangrando - 2013-01-09