Installation of CVMFS

• The official ATLAS documentation for installation of CVMFS client can be found at this reference.
• The official CVMFS documentation can be found at this reference.

Read: https://twiki.cern.ch/twiki/bin/view/Atlas/Tier3CVMFS2SLC5

• The cache area is located in /home/cache/cvmfs2. The path variable in the ATLAS documentation is home
  • /home/cache/cvmfs2 should be owned by the cvmfs account
• Only 25 GB of space is needed
• The cvmfs account will be created in the /etc/passwd file.

  cvmfs:x:383:384:CernVM-FS service account:/var/cache/cvmfs2:/sbin/nologin

In this section the specific configuration details for ANL will be listed.

1. Edit (create if it does not exist) the file /etc/cvmfs/default.local, in particular, change

   CVMFS_REPOSITORIES=atlas.cern.ch,atlas-condb.cern.ch,atlas-nightlies.cern.ch
   CVMFS_CACHE_BASE=/home/cache/cvmfs2
   CVMFS_QUOTA_LIMIT=13000
   CVMFS_HTTP_PROXY="http://squid.hep.anl.gov:3128;DIRECT"

2. Create a file /etc/cvmfs/domain.d/cern.ch.local and add the following entry:

   #  Change the order so that the nearest server is the first in the list ...
   #  Note that port 8000 is preferred for the servers below but,  if it does not work, use port 80 instead.
   # if you are in North America (uncomment)
   CVMFS_SERVER_URL="http://cvmfs.racf.bnl.gov:8000/opt/@org@;http://cvmfs-stratum-one.cern.ch:8000/opt/@org@;http://cernvmfs.gridpp.rl.ac.uk:8000/opt/@org@"

3. Add cvmfs to chkconfig

   /sbin/chkconfig --levels 345 cvmfs on

4. Restart cvmfs

   /sbin/service cvmfs restart

5. Check if cvmfs works, by inspecting the contents of the following directories:

   > ls /cvmfs/atlas.cern.ch/
   repo
   > ls /cvmfs/atlas.cern.ch/repo
   ATLASLocalRootBase  conditions  sw
   > ls /cvmfs/atlas-condb.cern.ch/repo
   conditions  tag

• Start

  /sbin/service cvmfs start

• Stop

  /sbin/service cvmfs stop

For SL6, do this:

 yum install compat-expat1 openssl098e libuuid-devel
 rpm -Uvh http://cvmrepo.web.cern.ch/cvmrepo/yum/cvmfs/EL/6/x86_64/cvmfs-release-2-4.el6.noarch.rpm
 yum install cvmfs cvmfs-init-scripts cvmfs-auto-setup  cvmfs-keys.noarch cvmfs.x86_64 

Doug suggestions (no need!):

yum install libuuid-devel
ln -s  /lib64/libuuid.so.1 /lib64/libuuid.so
wget http://linuxsoft.cern.ch/cern/slc6X/extras/x86_64/RPMS/HEP_OSlibs_SL6-1.0.7-0.el6.x86_64.rpm
yum install HEP_OSlibs_SL6-1.0.7-0.el6.x86_64.rpm 

Bob suggested:

cat - >/etc/cvmfs/default.local <<EOF
CVMFS_QUOTA_LIMIT=100000
CVMFS_HTTP_PROXY="http://squid.hep.anl.gov:3128;http://cvmfs02.racf.bnl.gov:8000|http://cvmfs03.racf.bnl.gov:8000;DIRECT"
CVMFS_SERVER_URL=http://cvmfs.racf.bnl.gov:8000/opt/atlas-newns,http://cvmfs-stratum-one.cern.ch/opt/atlas-newns
CVMFS_REPOSITORIES=atlas.cern.ch,atlas-condb.cern.ch,atlas-nightlies.cern.ch,geant4.cern.ch,grid.cern.ch,sft.cern.ch
#CVMFS_DEBUGLOG=/var/log/cvmfs.log
EOF

Then put ANL specific files (take from atlas17)

scp [email protected]:/etc/cvmfs/domain.d/cern.ch.local /etc/cvmfs/domain.d/
scp [email protected]:/etc/cvmfs/default.local /etc/cvmfs/

How to test

Run:

/cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase/utilities/installCheck.sh

and install the needed packages.

export ATLAS_LOCAL_ROOT_BASE=/cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase
source ${ATLAS_LOCAL_ROOT_BASE}/user/atlasLocalSetup.sh