LSC Data Grid (6 sources) Load


General Information
LSC LIGO Scientific Collaboration
LIGO-Hanford Observatory
LIGO-Livingston Observatory

DataGrid Details

What is LSC DataGrid?
LDG Clusters Usage [Ganglia]
Available Data per site
Grid Service Details [Monitoring]

User Manual

How to get started
Install Data Grid Client
Getting Certificates
Account Request
SSH Login Portal
CVS/Bug Account Request
Request Software changes to SCCB

Admin Manual [(*) = optional]

Install DataGrid Server
Get server certificates
Configure/deploy Condor
Include site into Grid Monitoring
Graceful Condor shutdown
(*) Configure/deploy CondorView
(*) Configure Condor Flocking
(*) CondorC on LDG
LAMS / VOMS Admin [LSC internal]
Syracuse X4500 wiki [passwd required]
Edit these web pages

Request/Bug Tracking

Request Tracking System [RT]
LDG trouble ticket system


Reference O/S Schedule

LDG Collaborations

Condor-LIGO biweekly telecon
Globus-LIGO monthly telecon
LIGO VO in Open Science Grid [OSG]
Archival GriPhyN-LIGO WG pages



LSC DataGrid Server 5.x Installation

What's new?

Main components of the LDG-5.x release

Supported Linux/Unix Platforms

Instructions for Scientific Linux 6.1 / CentOS 5.3

Installation of LDG Server 5.x

  1. Important: To ensure stability in the software used, please, install packages only from the (LDG maintained) FROZEN mirrors of the Scientific_Linux and EPEL repositories [any other repositories must be disabled to avoid conflicts during the installation of LDG packages]. To set up your linux machine to fetch software from these frozen mirrors, please, follow the steps listed at Administrator Instructions.
  2. To set the correct software repositories to download the LDG packages, follow steps 1 & 2 from the Client installation. Verify that you have the file '/etc/yum.repos.d/ldg.repo' with the VDT Production and Testing repositories set to "enable=1". To verify that the right repositories are set, execute the command yum repolist. You must see something similar to
    repo id             repo name                                             status
    CONDOR-stable       Condor Stable RPM Repository for Redhat Enterprise Li     2
    OSGgoc              OSG GOC Yum Repository                                    1
    EPEL6               Extra Packages for Enterprise Linux 6 - x86_64        6,348
    SL6.1               Scientific Linux 6.1 - x86_64                         6,251
    SL6.1_SecurityUps   Scientific Linux 6.1 Security Updates - x86_64          543
    VDT-Production-sl6  VDT RPM repository - Production versions for SL6          1
    VDT-Testing-sl6     VDT RPM repository - testing versions for SL6            21
    lscsoft             LSCSOFT_Production                                      108
    lscsoft-testing     LSCSOFT_Testing                                          54
    repolist: 13,510
    in other words, the repositories: Condor, Scientific Linux (LDG Frozen mirror), EPEL 6 (LDG Frozen mirror), VDT and LSCSOFT must be enabled.
  3. To see which (meta)packages you will install, execute
    yum groupinfo ldg-server
  4. You must see
    Group: LDG SERVER
     Description: VDT rpm packages for the installation of LIGO Data Grid server.
     Mandatory Packages:
    These metapackages will, in turn, fetch the rest of the Globus, VDT, Condor, OSG packages.
  5. Install the server by executing
    yum groupinstall ldg-server
    Please, note that the OSG CA Certificates will be installed in /etc/grid-security/certificates directory.
  6. Run
    and verify that you see sth similar to
    LIGO Data Grid:      5.2
    Platform:            Scientific Linux 6.1
    Date:                Mon 28 Nov 2011 11:36:19 CST
    Globus Toolkit:      5.0.3
    GSI-OpenSSH:         5.9p1-hpn13v11 (GSI 20110906)
    MyProxy:             5.3
    OSG CA Certificates: 1.24
  7. To use openGSISSH server, the installed native openssh-server must be turned off,
    service sshd stop
    service gsisshd start
    All of the Grid ssh tools have the prefix gsi, e.g., gsissh, so that they can co-exist with the standard OS versions.

    By default the gsisshd is configured (port 22) to use GSI Authentication only (only users with valid proxy can log in), so to regain wider 'SSH' access by allowing Password authentication (and if wanted, X11 Forwarding or RSA/DAS, etc.) configure the /etc/gsisshd_config file accordingly; for example, by adding
    X11Forwarding yes
    PasswordAuthentication yes
    and then restart the service,
    service gsisshd restart
  8. To start the GridFTP server (default port 2811), do
    service globus-gridftp-server start
Supported by the National Science Foundation. Any opinions, findings and conclusions or recomendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation (NSF)