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---+ AliceBox A discussion on setting up the ALICE VOBox at Birmingham. %TOC% ---++ Introduction The aim is to configure our grid resources at Birmingham to allow ALICE production jobs to run. The intention is to eventually support user analysis jobs as well. Instructions on how to setup a generic VOBox are available on the [[http://goc.grid.sinica.edu.tw/gocwiki/VO-box_HowTo][GOC Twiki]], and specific instructions for ALICE are available on the [[http://alien.cern.ch/twiki/bin/view/AliEn/HowToInstallLcgVoBox][AliEn Twiki]]. Alice require a Cream CE and a VOBox, both of which need to be 64bit machines. This will follow shortly. ---++ VOBox Installation ---+++ Machine Installation The VOBox has been deployed as a 64 bit [[LocalGridMachines][virtual machine]] running SL 5.3. It has the name =epgr03.ph.bham.ac.uk= and the DN =epgr03.ph.bham.ac.uk/emailAddress=lcg-site-admin@hep.ph.bham.ac.uk=. The machine is configured using cfengine (known as the class =alice_vobox=, with configuration files stored in the =repo/alice_vobox= on =epgmo1=). The command =yum -y update= was issued before any further installation commenced. The machine has been configured to use =ntpd=. ---+++ gLite Installation Installation proceed by first downloading the [[http://grid-deployment.web.cern.ch/grid-deployment/glite/repos/3.2/lcg-CA.repo][lcg-CA]] and [[http://grid-deployment.web.cern.ch/grid-deployment/glite/repos/3.2/glite-VOBOX.repo][glite-VOBOX]] yum repo config files. The repos =sl-contrib=, =sl-srpms= and =dag= were also enabled. The packages =lcg-CA= and =lcg-VOBOX= were installed using yum. =alpine= and =zsh= were also installed as standard. ---+++ Firewall settings In addition to the normal Birmingham-enabled ports (ssh, cfengine etc), the following ports have been enabled: | *Port* | *Function* | *Restricted to* | | 1975 | GSISSH | Global | | 2170 | BDII | Global | | 2811 | GridFTP | Global | | 20000-25000 | Globus TCP Port Range | Global | ---+++ Software Areas Only the ALICE local cluster software area is available at the moment, NFS mounted to =epgr03:/egee/soft/alice=. *NOTE!* This area is owned by =sgmali01:alicesgm= on epgsr1, and this user does not exist on epgr03! ---+++ Yaim Configuration ---++++ Users Only one user has been configured on the VOBox: * yaim-conf/users.conf <verbatim> 1001:alicesgm:1002,1000:alicesgm,alice:alice:sgm: </verbatim> * yaim-conf/groups.conf <verbatim> "/VO=alice/GROUP=/alice/ROLE=lcgadmin":::sgm: "/VO=alice/GROUP=/alice/ROLE=production":::prd: "/VO=alice/GROUP=/alice":::: </verbatim> Online the =vo.d/alice= config file has been transferred to the VOBox by cfengine. ---+++ Backup Policy This node is not currently backed up. This will be reviewed in the New Year. ---+++ Testing ---++++ Port Availability Tested with telnet (ie =telnet epgr03.ph.bham.ac.uk 1975= etc). Comparing with port availability on =vobox.egee.cesga.es=. | *Port* | *Example Box* | *Bham Box* | | 1975 | %Y% | %Y% | | 2811 | %Y% | %Y% | ---++++ GSISSH 1 Edit =/etc/grid-security/grid-mapfile= and map DN to alicesgm (ie add line ="/C=UK/O=eScience/OU=Birmingham/L=ParticlePhysics/CN=christopher curtis" alicesgm=) 1 Log onto node using gsissh: =gsissh -p 1975 epgr03.ph.bham.ac.uk= 1 $X509_USER_PROXY variable should be set after successful log in. ---++++ GridFTP The command =edg-gridftp-ls gsiftp://epgr03.ph.bham.ac.uk/tmp= may be used to check the =globus-gridftp= service is running. ---++ Site BDII The VOBox has been entered into the site BDII information by adding the line: <verbatim> BDII_VOBOX_URL="ldap://epgr03.ph.bham.ac.uk:2170/mds-vo-name=resource,o=grid" </verbatim> to the =site_bdii/site-info.def= file. Yaim has been re-run on the site BDII. ---++ Storage Element ALICE require xrootd to be installed on the Storage Element. -- Main.ChristopherCurtis - 29 Jul 2009
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Topic revision: r7 - 18 Dec 2009
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_47C_61UK_47O_61eScience_47OU_61Birmingham_47L_61ParticlePhysics_47CN_61christopher_32curtis
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