Grid UI setup
On machines that support the CVMFS file system (stoomboot and most desktop systems), you can easily set up the Grid command-line tools.
Check if your machine has CVMFS:
stbc-i2:~> ls /cvmfs alice.cern.ch atlas.cern.ch lhcb.cern.ch sft.cern.ch stbc-i2:~> ls /cvmfs/grid.cern.ch 3.1.22-0 centos7-ui-preview-v03 emi3ui-latest emi-ui-3.14.0-1_sl6v1 emi-ui-3.7.3-1_sl6v2 emi-wn-3.10.0-1_sl6v2 glite umd-sl6wn-test 3.1.39-0 centos7-ui-preview-v04 emi3ui-test emi-ui-3.15.3-1_sl6v1 emi-wn-2.5.0-1 emi-wn-3.15.3-1_sl6v1 Grid util 3.1.41-0 centos7-ui-test emi3wn-latest emi-ui-3.17.1-1.sl6umd4v1 emi-wn-2.5.1-1_sl6v2 emi-wn-3.17.1-1.sl6umd4v1 pakiti vc 3.1.45-0 centos7-ui-v03 emi3wn-test emi-ui-3.17.1-1.sl6umd4v2 emi-wn-2.5.1-1_v1 emi-wn-3.17.1-1_sl6v1 README 3.2.11-1 centos7-wn-preview-v01 emi-ui-2.10.4-1_sl5v1 emi-ui-3.17.1-1_sl6v1 emi-wn-2.6.0-1_sl6v1 emi-wn-3.17.1-1_sl6v2 umd-c7ui-test centos7-ui-preview-v01 centos7-wn-preview-v02 emi-ui-2.10.4-1_sl6v1 emi-ui-3.17.1-1_sl6v2 emi-wn-2.6.0-1_v1 emi-wn-3.7.3-1_sl6v2 umd-c7wn-test centos7-ui-preview-v02 default emi-ui-2.9.0-1_sl5v1 emi-ui-3.17.1-1_sl6v3 emi-wn-3.10.0-1_sl6v1 etc umd-sl6ui-test
Note that CVMFS is automounted, so the grid.cern.ch subdirectory may not be there unless you explicitly ask to list (or use) it.
Now set up the command line tools:
stbc-i2:~> source /cvmfs/grid.cern.ch/etc/profile.d/setup-cvmfs-ui.sh
Now you can do things like create a grid proxy or retrieve data:
stbc-i2:~> voms-proxy-init --voms atlas Enter GRID pass phrase for this identity: Contacting lcg-voms2.cern.ch:15001 [/DC=ch/DC=cern/OU=computers/CN=lcg-voms2.cern.ch] "atlas"... Remote VOMS server contacted succesfully. Created proxy in /tmp/x509up_u5970. Your proxy is valid until Fri Jul 21 02:16:33 CEST 2017
Support is included in CVMFS for the usual high-energy physics experiments like ATLAS, ALICE, etc. But not all of our local experiments are present. You can try this command:
. /global/ices/lcg/etc/profile.d/grid-env.sh
which does the same as the above "source" command and adds as well support for the known local experiments. If you've tried both options and you still get an error when trying to use the virtual organization (VO) for your experiment, like this:
stbc-i2:~> voms-proxy-init --voms projects.nl:/projects.nl/modulations VOMS server for VO projects.nl is not known! Check your vomses configuration.
you can add the configuration locally ... below is an example for the "projects.nl" VO, the PDP group can help you find the right information for configuring a different VO. In any case, once you get the right information, these are the steps involved. Note that for "projects.nl", "voms.grid.sara.nl" etc you need to fill in instead the corresponding values for the VO you want.
stbc-i2:~> mkdir -p $HOME/.glite/vomsdir/projects.nl stbc-i2:~> cat > $HOME/.glite/vomsdir/projects.nl/voms.grid.sara.nl.lsc <<EOF /O=dutchgrid/O=hosts/OU=sara.nl/CN=voms.grid.sara.nl /C=NL/O=NIKHEF/CN=NIKHEF medium-security certification auth EOF
stbc-i2:~> mkdir -p $HOME/.glite/vomses stbc-i2:~> cat > $HOME/.glite/vomses/projects.nl-voms.grid.sara.nl <<EOF "projects.nl" "voms.grid.sara.nl" "30028" "/O=dutchgrid/O=hosts/OU=sara.nl/CN=voms.grid.sara.nl" "projects.nl" EOF stbc-i2:~> export X509_VOMS_DIR=$HOME/.glite/vomsdir stbc-i2:~> export VOMS_USERCONF=$HOME/.glite/vomses stbc-i2:~> voms-proxy-init --voms projects.nl:/projects.nl/modulations Enter GRID pass phrase for this identity: ....
