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MUPJ - gLexec update

This update discusses the ongoing tests and integration of gLexec within several experiments at CERN. Notably, ATLAS has demonstrated proof of concept at BNL, while CMS has begun using gLexec in production at select OSG sites. The report also highlights issues related to gLexec's location and its integration across various sites. LHCb is conducting Nagios gLexec tests, revealing mixed results across multiple testing sites including IN2P3 and KIT. The integration of gLexec into ALICE's AliEn system is also underway, with further developments needed on user proxy handling.

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MUPJ - gLexec update

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  1. MUPJ - gLexec update GDB 2011-02-09 Maarten Litmaath CERN

  2. Maarten Litmaath (CERN)

  3. Nagios tests for “ops” • Note the new host for these tests: samnag023.cern.ch • LCG-CE • https://samnag023.cern.ch/nagios/cgi-bin/status.cgi? servicegroup=SERVICE_CE&style=detail • CREAM • https://samnag023.cern.ch/nagios/cgi-bin/status.cgi? servicegroup=SERVICE_CREAM-CE&style=detail Maarten Litmaath (CERN)

  4. Experiment activities (1/2) • ATLAS • Proof of concept shown to work at BNL, not enabled now • glexec being tested at a few EU T2 • “cmt” hanging when wrapped by glexec, not understood • CMS • USCMS use glexec in production at a few OSG sites • All USCMS sites have glexec in setuid mode • Almost no EU T2 has glexec, as expected • Issue with location of glexec • gLite: $GLITE_LOCATION/sbin by default • gLite: $GLEXEC_LOCATION/sbin e.g. at IN2P3 • Should always be defined, bug has been opened • OSG: $OSG_GLEXEC_LOCATION (/sbin?) Maarten Litmaath (CERN)

  5. Experiment activities (2/2) • LHCb running Nagios glexec tests as well • https://samnag015.cern.ch/nagios/cgi-bin/status.cgi? servicegroup=SERVICE_CE&style=detail • IN2P3, KIT, PIC: glexec working OK for LHCb • NIKHEF: glexec fails with error 203 • ALICE integrating glexec into AliEn • http://indico.cern.ch/conferenceDisplay.py?confId=77424 • Job agent can invoke glexec with the pilot proxy • No user change yet • Similar to “ops” and “lhcb” Nagios tests • User proxy handling still needs major development Maarten Litmaath (CERN)

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