InstallDcache195scratch

Installing dCache 1.9.5 from scratch

Virtual machine

• Installed a base machine
  • It is a virtual machine on dom04.wn.iihe.ac.be with 2 CPUs and 2GB of RAM

dcache2-shadow.iihe.ac.be

Installation and setup

• The dCache 1.9.5 manual http://www.dcache.org/manuals/Book-1.9.5/
  • The steps below follow basically what is described in the manual

• Remark: InstalldCacheHeadnode gives the instructions to reinstall the 1.8.0 dCache version on maite

• Get latest release:

wget http://www.dcache.org/downloads/1.9/dcache-server-1.9.5-29.noarch.rpm
rpm -ivh dcache-server-1.9.5-29.noarch.rpm

• Install PostgreSQL

yum install -y postgresql postgresql-devel postgresql-jdbc postgresql-libs postgresql-python postgresql-server postgresql-contrib
/etc/init.d/postgresql start
chkconfig postgresql on

• In /var/lib/pgsql/data/pg_hba.conf add

local   all         all                        trust
host    all         all         127.0.0.1/32   trust
host    all         all         ::1/128        trust

• and restart

/etc/init.d/postgresql restart

• Create db and user

createuser -U postgres --no-superuser --no-createrole --createdb --pwprompt srmdcache
createdb -U srmdcache dcache

• Generate keys

ssh-keygen -b 768 -t rsa1 -f /opt/d-cache//etc/server_key -N ""
ssh-keygen -b 1024 -t rsa1 -f /opt/d-cache//etc/host_key -N "" 

• Install pnfs

wget http://www.dcache.org/downloads/pnfs/RPMs/pnfs-postgresql-3.1.18-1-SL5x.x86_64.rpm
rpm -ivh pnfs-postgresql-3.1.18-1-SL5x.x86_64.rpm

• A whole set of config files need to be adapter InstallDcache195scratchConfigFiles

• Import pnfs database:
  • go to jefke.wn and in /storage/userbackup/Maite_Db_backup/ find a file with pnfsdb.tar (any will do).
  • Untar it in the correct location. Hint: tar -tf to see where the tree structure of the tarball.
  • This configures contains the metadata for the pnfs database
  • Also copy the last file full_*.gz, which contains the full pnfs database.

su - postgres
zcat <path to gzipped full database> | psql postgres

• Run install script of dcache.
  • Needed a little hack in the script to mount fs from localhost

/opt/d-cache/install/install.sh

• • with line 260 replace RET=${RET:-localhost} by RET="localhost"

• The poolmanager.conf was adapted by Olivier and is here InstallDcache_PoolManagerConf

• Copy all files from maite ~/.ssh to new machine
  • make sure permissions are 700
  • import keys in dcache

cat ~/.ssh/dcache_admin_key.pub >> /opt/d-cache/config/authorized_keys

• Change the following files
  • /pnfs/fs/admin/etc/config/serverName
  • /pnfs/fs/admin/etc/config/dCache/dcache.conf
  • vi "/pnfs/iihe/cms/store/user/odevroed/.(config)(dCache)/dcache.conf"
  • more info in the dcache book in the section Global Configuration with Wormholes
• Run this

touch /pnfs/fs/admin/etc/config/dCache/'.(fset)(dcache.conf)(io)(on)'

• Copy files from /etc/grid-security (not the keys)

• Install lcg-CA repo
  • Link: https://twiki.cern.ch/twiki/bin/view/LCG/GenericInstallGuide310
  • Link: https://wiki.egi.eu/wiki/EGI_IGTF_Release

wget http://repository.egi.eu/sw/production/cas/1/current/repo-files/EGI-trustanchors.repo
mv EGI-trustanchors.repo /etc/yum.repos.d/
yum install ca-policy-egi-core
yum install lcg-CA

• This machine was installed as a base machine. Therefore the user and groups were not present. They have been created (only the relevant ones) by hand to be able to test the machine.

• The way dCache is handling the authorisation changed; in case /Role= and /Capability= are null they are ommited. This means that the entries in /etc/grid-security/grid-vorolemap should not be

"/C=BE/O=BEGRID/OU=ELEM/OU=VUB/CN=Joris Maes" "/cms/becms/Role=NULL/Capability=NULL" jmmaes

but it should be

"/C=BE/O=BEGRID/OU=ELEM/OU=VUB/CN=Joris Maes" "/cms/becms" jmmaes

Operation

• Fire up the server

/opt/d-cache/bin/dcache start|restart|stop|status

• Go into admin mode

ssh -F /root/.ssh/dcache_admin_config admin@localhost

GUI

• Installation