egi-cvmfs

egi-cvmfs is a meta-package to install the CernVM File System (cvmfs) configured for EGI.

This github repository has the source code of course but it is also available as a pre-built package, and instructions on how to install it and all of cvmfs are below.

EGI cvmfs installation is very similar to the Open Science Grid (OSG) installation, so rather than repeating all their instructions, you will be directed below to follow most of them. The main differences are in the package repository setup and the install command.

Preparation

Before starting the installation process, consider the following:

• User IDs: If it does not exist already, the installation will create the cvmfs Linux user.
• Group IDs: If they do not exist already, the installation will create the Linux groups cvmfs and fuse.
• Network: The host will need network access to a local squid server such as the squid distributed by CERN. It is also available in the EGI UMD (setup details below). The squid will need out-bound access to cvmfs stratum 1 servers on the internet.
• Disk space: Sufficient (~25GB) cache space reserved, preferably in a separate filesystem.

Package repository setup

If you are using a Debian or Ubuntu host then follow the instructions for apt on the CERN cvmfs downloads page and on the cvmfs-contrib home page. The egi-cvmfs package isn't on Debian, but the instructions are here so skip ahead to the installing section below.

For RHEL based hosts, you have a choice between using the standard EGI UMD yum repository and the CERN cvmfs plus cvmfs-contrib yum repositories:

1. If you choose to use the EGI UMD repository for RHEL hosts, set it up by installing the appropriate umd-release rpm shown in the UMD documentation.

2. If you're not using EGI UMD, first follow the yum instructions at the top of the CERN cvmfs downloads page. Next, the cvmfs-contrib setup needed for the EGI cvmfs installation on RHEL is a little more complicated than a standard cvmfs-contrib setup because unlike on Debian there can only be one cvmfs-config-* rpm in each yum repository. Run these commands as root to set up both the cvmfs-contrib repository and the additional cvmfs-contrib-egi yum repository:

   yum install -y https://ecsft.cern.ch/dist/cvmfs/cvmfs-contrib-release/cvmfs-contrib-release-latest.noarch.rpm
   cp /etc/yum.repos.d/cvmfs-contrib.repo /tmp
   mv -f /tmp/cvmfs-contrib.repo /etc/yum.repos.d
   yum-config-manager --enable cvmfs-contrib-egi >/dev/null
   

   The cp and mv cause a copy of the file to be made instead of a symlink to a file that's not supposed to be changed.

Installing EGI cvmfs

To install EGI cvmfs on RHEL hosts do

yum install egi-cvmfs

or on Debian/Ubuntu hosts do

apt-get install cvmfs-config-egi cvmfs cvmfs-x509-helper

Then proceed to follow the OSG cvmfs instructions starting at Automount setup. On Debian/Ubuntu hosts follow the EL7 instructions for "Automount setup."

These instructions should work even if you are replacing a previous CVMFS installation based on cvmfs-config-default. On Debian/Ubuntu, if you did replace cvmfs-config-default then also clean up deleted files with

dpkg --purge cvmfs-config-default