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Complete Guide to Installing and Configuring gLite Middleware on Scientific Linux

This document provides a comprehensive guide for the installation and configuration of gLite Middleware version 3.1 on Scientific Linux 4 (SL4). It covers the essential steps such as setting up the operating system, synchronous node configuration with NTP, obtaining and installing host certificates, middleware installation requirements (including Java), setting up various repositories, installing necessary packages, and configuring the system using the YAIM tool. Detailed command examples are provided to facilitate the entire process.

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Complete Guide to Installing and Configuring gLite Middleware on Scientific Linux

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  1. Nicosia, March 18, 2010 Installation and Configuration :SESSION C Andoena Balla <andoena@cs.ucy.ac.cy>Trainer, University of Cyprus

  2. Nicosia, 18 March 2010 Installing the Operating System • OS version of gLite Middleware version 3.1 is Scientific Linux 4 (SL4): • http://www.scientificlinux.org • The sources and the images (iso) to create CDs for SLC4 can be found in this site: • ftp://ftp.scientificlinux.org/linux/scientific/4x

  3. Nicosia, 18 March 2010 Node synchronization, NTP installation and configuration • A general requirement for the gLite nodes is that they are synchronized • Use the NTP protocol with a time server • yum install ntp • edit the file /etc/ntp/step-tickers • pool.ntp.org • Activate the ntpd service with the following commands: • ntpdate pool.ntp.org • service ntpd start • chkconfig ntpd on • Check ntpd's status by running the following command: • ntpq -p

  4. Nicosia, 18 March 2010 Host Certificates • All nodes except UI, WN and BDII require the host certificate/key files to be installed • Obtain a certificate from national Certification Authority (CA) • Place the certificate under /etc/grid-security (hostcert.pem containing the machine public key) (hostkey.pem containing the machine private key ) • cp /root/<service>/hoscert.pem /etc/grid-security/ • cp /root/<service>/hostkey.pem /etc/grid-security/ • Make sure that the permission of the certificate are: • -r--r--r-- 1 root root 4249 Jun 30 2009 hostcert.pem • -r-------- 1 root root 887 Jun 30 2009 hostkey.pem

  5. Nicosia, 18 March 2010 Installing the Middleware • Java is required before proceeding to middleware installation: • cd /root/java • rpm -ivh java-1.5.0-sun-1.5.0.14-1jpp.i586.rpm • rpm -ivh java-1.5.0-sun-devel-1.5.0.14-1jpp.i586.rpm • Repositories • the middleware repositories • the CA repository • the jpackage repository • DAG • The middleware repositories • wget the yum repository for the node type and place it under • /etc/yum.repos.d • Download repositories from: • http://grid-deployment.web.cern.ch/grid-deployment/glite/repos/3.1

  6. Nicosia, 18 March 2010 The DAG repository • DAG is a maintained repository which provides a number of packages not available through Scientific Linux • In a limited number of cases, DAG provides rpms already represent in the OS • In this case, DAG rpms are of a higher version • Install the relevant rpm by hand before installing the meta-package • wget 'http://linuxsoft.cern.ch/dag/redhat/el4/en/i386/RPMS.dag/perl-SOAP-Lite-0.69-1.el4.rf.noarch.rpm' • yum localinstall perl-SOAP-Lite-0.69-1.el4.rf.noarch.rpm

  7. Nicosia, 18 March 2010 Installations • yum install lcg-CA • yum install glite-UI glite-MON • yum install lcg-CE • yum install glite-WMS glite-LB • yum install glite-WN TORQUE_client

  8. Nicosia, 18 March 2010 Configuring the Middleware • Using the YAIM configuration tool • Configuring multiple node types on the same physical host • lcg CE + BDII_site : not recommended when the lcg CE is subjected to a heavy load. In that case the site BDII may stop working and the whole site will stop being published properly. • WMS+LB • WN + batch system client or MPI • lcg CE or cream CE + batch system server + batch system utils • Installing and Configuring a batch system • The Torque/PBS batch system • cd /etc/yum.repos.d/ • wget http://grid-deployment.web.cern.ch/grid-deployment/glite/repos/3.1/glite-TORQUE_server.repo • wget http://grid-deployment.web.cern.ch/grid-deployment/glite/repos/3.1/glite-TORQUE_client.repo • wget http://grid-deployment.web.cern.ch/grid-deployment/glite/repos/3.1/glite-TORQUE_utils.repo • yum update • yum install the_necessary_metapackage_

  9. Nicosia, 18 March 2010 Configuring the Middleware • Place the configuration files: • users.conf • groups.conf • site-info.def (cp /root/ce201/etc/ /opt/glite/yaim) • cd /opt/glite/yaim/bin/ • yaim -c -s site-info.def -n lcg-CE -n TORQUE_server -n TORQUE_utils • yaim -c -s /opt/glite/yaim/etc/site-info.def -n glite-WMS -n glite-LB • yaim -c -s /opt/glite/yaim/etc/site-info.def -n glite-MON glite-UI • yaim -c -s /opt/glite/yaim/etc/site-info.def -n glite-WN TORQUE_clent

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