Review of the OSG Critical Probes used for Availability Metrics Calculations

OSG Services

The only authoritative source of information for SAM in terms of OSG services for OPS vo is the OSG interoperability monitoring list, which is accessible through this URL: http://oim.grid.iu.edu/publisher/get_osg_interop_monitoring_list.php

This means that SAM will ONLY monitor those services under OPS credentials.

At present time, the service names that SAM expects to find in that URL are the ones listed in the first column of this table:

Service name in OSG URL Service name in SAM Service abbreviation in SAM
OSG-CE OSG Computing Element OSGCE
OSG-SRMv1 OSG SRM version 1 OSGSRMv1
OSG-SRMv2 OSG SRM version 2 OSGSRMv2
OSG-BestmanXrootd OSG BestmanXrootd OSGBestm
OSG-GridFtp OSG GridFtp OSGGdFTP

List of OSG probes

The OSG probes available in the RSV (Resource & Service Validation) project are listed here:

http://rsv.grid.iu.edu/documentation/help/

Equivalence between EGEE and OSG critical tests

Computing Element (CE):
  • CE-sft-caver is equivalent to org.osg.certificates.cacert-expiry
  • CE-sft-csh is equivalent to org.osg.general.osg-directories-CE-permissions
  • CE-sft-lcg-rm is equivalent to ==
  • CE-sft-job is included in ==
  • CE-sft-softver is equivalent to org.osg.general.osg-version.txt
  • CE-host-cert-valid This one does not apply for OSG (no way to check)
  • CE-sft-brokerinfo This one does not apply for OSG (no broker)
  • This is not available in EGEE; in OSG org.osg.general.ping-host.txt
  • This is not available in EGEE; in OSG org.osg.globus.gram-authentication

Storage Element (SE):

  • These do not apply to OSG as they only have SRMs
  • SE-lcg-cr
  • SE-lcg-cp
  • SE-lcg-del

SRM (SRM):

Site BDII (sBDII):

  • Does not apply as OSG only uses a global BDII. A future release of RSV will include Global BDII tests.
  • sBDII-sanity
  • sBDII-performance

Current Critical Tests for OSG defined in SAM (These will be critical through at least June 30, 2008)

  • org.osg.certificates.crl-expiry
    • org.osg.certificates.crl-expiry: Checks for expired and expiring-soon CAcerts/CRLs on remote host. Stages worker script defined in OSG_RSV_Probe_Base (or as provided using commandline argument) to remote host; and then checks the *.0 or .r0 files in $OSG_LOCATION/globus/share/certificates/ depending on -m value.
  • org.osg.general.osg-directories-CE-permissions
  • org.osg.general.osg-version
  • org.osg.globus.gridftp-simple (remove for proposed status, will be critical for resources with service type OSGGdFTP)
    • org.osg.globus.gridftp-simple: Checks if OSG-GridFtp works to and from remote host. A test file is gridftp'ed to remote host, and back. Then the files are checked for consistency.

Proposed Critical Tests for OSG-CE

Proposed Critical Tests for OSG-SRMv1/SRMv2/BestmanXrootd

Proposed Critical Tests for OSG-GridFtp

-- DavidCollados - 03 Dec 2007

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Topic revision: r13 - 2008-06-20 - DavidCollados
 
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