Practice 3 - Grid information services.

Date: 27.02.2013
Deadline: 17.03.2013

• Review the lecture slides: PDF
• Exercise 1: Exploring Grid information services

References for documentation

Referred documents and web sites contain supplementary information for the practice.

Glossary

• Grid acronyms and definitions can be found at EGI Glossary.

ARC documentation

• NorduGrid ARC documentation
• The NorduGrid ARC User Guide
• The Grid Monitor Usage manual

ARC services

• NorduGrid Monitor
• Estonian Grid Monitor

EGI services

• EGI central operations tools
• EGI Accounting Portal
• EGI Service Availability Monitoring Portal
• EGI Grid Configuration Database (GOCDB)

Getting started

Read about the information services of ARC from the referred documents. It is important to understand the information system and services of Grid. Open all of the referred services.

Log in to the ATIGrid machine:

ssh atigrid.mt.ut.ee

Star grid session

arcproxy -S balticgrid

Exercise 1: Exploring Grid information services

Save the answers to the red questions and relevant command line output to W3_comments.txt file

ARC information services

Open the NorduGrid Monitor and look around in the portal.

Find answers to the questions:

• How many Clusters (CE) have more than 1000 CPUs occupied?
• How many CE have more than 10TB Disk space available?
• Which Job has been using the most CPU time?
• How many CPUs are available at Tintin cluster?
• What is the operating system of Tintin cluster?

Try the arcinfo command:

arcinfo -h

• What kind of information can be useful for a Grid user (you)?

Also try the 'ldapsearch' program:

man ldapsearch

• Did you find anything interesting?

Try out the Estonian Grid Monitor as well.

EGI portals

EGI Accounting Portal

• How many computing hours were used by CMS VO in January 2013?
• How many computing hours were used by CMS VO in January 2013 on Estonian resources?

EGI Grid Configuration Database (GOCDB)

• What is the CSIRT E-Mail address for the EENet site?
• Who is the Site Security Officer at T2_Estonia site?

hint - Estonian sites can be found under NGI-NDGF

EGI Service Availability Monitoring Portal

Just click around the portals :)

• Did you find anything interesting?

Deliverables: a W2_comments.txt file with the answers to the red questions, your comments and the command line outputs that proves you have been running the exercises.

Also read the Grid practical exercise solution format page to learn how to finalize and upload your solution.