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



Configuring and Deploying CondorView

CondorView is a Condor contribution module that can be used to provide statistical information on resources and usage of a Condor pool. These information (e.g. user-based resource usage statistics) cannot be obtained from low-level cluster monitoring tools (e.g. Ganglia).

It will be very helpful to know briefly how CondorView works before going to configuration steps. A Condor pool central manager runs the main condor_collector and writes Condor usage information into log files. A CondorView server is a machine within the Condor pool that runs another condor_collector daemon. The CondorView condor_collector recieves information dispatched periodically from the main condor_collector and writes them into history files. The CondorView client is any machine that runs a web server and can reach the CondorView server. The CondorView client runs cron jobs that contact periodically the CondorView server to get up-to-date information and create corresponding html pages. In summary, CondorView works in this way:

log files (central manager) -> history files (CondorView server) -> html files (CondorView client)

Go to here to configure and deploy a Condor pool. With an existing Condor, follow steps below to configure and deploy CondorView:

  1. Configure a machine in the Condor pool to be a CondorView server by adding two settings to the local configuration file of the chosen machine:
    POOL_HISTORY_DIR = /export/condor-history
  2. Configure Condor to automatically start the CondorView server by defining:
    VIEW_SERVER = $(SBIN)/condor_collector
  3. Configure a pool to report to the CondorView server by defining the following setting in the global configuration file:
    CONDOR_VIEW_HOST = full.hostname
    where full.hostname is the full hostname of the CondorView server. If you do not have a shared global configuration file for Condor, you should put the same value in the configuration files on both the main condor_collector and the CondorView server host.
  4. Restart the condor_master at your CondorView server host.
  5. Send a condor_reconfig to your main condor_collector for the change to take effect.
  6. It will take a while for the CondorView server to produce history files. Make sure those files generated in POOL_HISTORY_DIR are not all empty. Otherwise, check for error messages in the Condor collector log files of both main and CondorView server hosts.
  7. Choose a machine with a web server running as the CondorView client.
  8. Go to here to download the CondorView client module.
  9. Fill in the customer information and click on "I Agree".
  10. The Condor contributed module download page includes a huge list of modules. Scroll down to the end of the page and download the tar.Z file of the Version 6.1.8 (view_client).
  11. Unpack the CondorView client package by running:
    gunzip view_client-6.1.8-Any-Java.tar.Z
    tar xvf view_client-6.1.8-Any-Java.tar
    cd view_client-6.1.8
  12. Follow the instructions in the file INSTALL to configure and deploy the CondorView client. This is a very well-written guide.
  13. Have your web browser Java enabled to view CondorView pages.

This completes a basic deployment and configuration of CondorView. Please go to the Condor manual for details. Any problems, please contact Junwei Cao.

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)