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Notes about Installation and Configuration of a CREAM Computing Element using Torque (WORK IN PROGRESS)

  • These notes are provided by site admins on a best effort base as a contribution to the IGI communities and MUST not be considered as a subsitute of the Official IGI documentation.
  • This document is addressed to site administrators responsible for middleware installation and configuration.
  • The goal of this page is to provide some hints and examples on how to install and configure an IGI CREAM CE service based on EMI middleware, in no cluster mode, with TORQUE as batch system on the same host

References

  1. About IGI - Italian Grid infrastructure
  2. About IGI Release
  3. IGI Official Installation and Configuration guide
  4. EMI CREAM System Administrator Guide
  5. Troubleshooting Guide for Operational Errors on EGI Sites
  6. Grid Administration FAQs page
  7. CREAM v.1.13
  8. CREAM TORQUE module v. 1.0.0-1

Service installation

O.S. and Repos

  • Starts from a fresh installation of Scientific Linux 5.x (x86_64).
# cat /etc/redhat-release 
Scientific Linux SL release 5.7 (Boron) 

* Install the additional repositories: EPEL, Certification Authority, UMD

# yum install yum-priorities yum-protectbase
# cd /etc/yum.repos.d/
# rpm -ivh http://mirror.switch.ch/ftp/mirror/epel//5/x86_64/epel-release-5-4.noarch.rpm
# wget http://repo-pd.italiangrid.it/mrepo/repos/egi-trustanchors.repo
# rpm -ivh http://repo-pd.italiangrid.it/mrepo/EMI/1/sl5/x86_64/updates/emi-release-1.0.1-1.sl5.noarch.rpm
# wget http://repo-pd.italiangrid.it/mrepo/repos/igi/sl5/x86_64/igi-emi.repo

  • Be sure that SELINUX is disabled (or permissive). Details on how to disable SELINUX are here:

# getenforce 
Disabled

  • Check the repos list (sl-*.repo are the repos of the O.S. and they should be present by default).

# ls /etc/yum.repos.d/
egi-trustanchors.repo  
emi1-third-party.repo emi1-base.repo emi1-updates.repo
igi-emi.repo
epel.repo epel-testing.repo  
sl-contrib.repo sl-fastbugs.repo sl-security.repo sl-testing.repo sl-debuginfo.repo sl.repo sl-srpms.repo

# yum clean all
Loaded plugins: downloadonly, kernel-module, priorities, protect-packages, protectbase, security, verify, versionlock
Cleaning up Everything

# yum install ca-policy-egi-core
# yum install xml-commons-apis
# yum install emi-cream-ce
# yum install emi-torque-server emi-torque-utils
# yum install glite-dgas-common glite-dgas-hlr-clients glite-dgas-hlr-sensors glite-dgas-hlr-sensors-producers yaim-dgas

see here for details

Service configuration

You have to copy the configuration files in another path, for example root, and set them properly (see later):
# cp -r /opt/glite/yaim/examples/siteinfo/* .

Create the vo.d directory for the VO configuration file (you can decide if keep the VO information in the site.def or putting them in the vo.d directory)

# mkdir vo.d

SUGGESTION: use the same site-info.def for CREAM and WNs

Revisions

Date Comment
2012-01-16 First draft

-- AlessandroPaolini - 2012-01-16

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Topic revision: r3 - 2012-01-17 - AlessandroPaolini
 
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