GT 4.1.0: Information Services

Abstract

The Monitoring and Discovery System (MDS) is a suite of web services to monitor and discover resources and services on Grids. This system allows users to discover what resources are considered part of a Virtual Organization (VO) and to monitor those resources. MDS services provide query and subscription interfaces to arbitrarily detailed resource data and a trigger interface that can be configured to take action when pre-configured trouble conditions are met.

For more information about the information services concepts behind GT4, see Information Service: Key Concepts.

GT4’s MDS includes:

  • WS MDS, the WSRF implementation of MDS, which consists of:

    • Index Service, , which collects monitoring and discovery information from Grid resources, and publishes it in a single location.
    • Trigger Service, which collects data from resources on the grid and, if administrator defined rules match, can perform various actions.
    • Aggregator Framework, the software framework on which the above WS MDS services are built.
    • WebMDS, which enables end users to view monitoring information via a standard web browser interface, without installing any additional software on their PC.


Table of Contents

Key Concepts
1. Overview
2. MDS4 Services
3. MDS4 Information Interfaces and Providers
4. Aggregator Framework
5. Information Providers
6. WebMDS user interface
7. Putting it all together
WS MDS Aggregator Framework
Release Notes
System Administrator's Guide
User's Guide
Developer's Guide
Public Interface Guide
Quality Profile
GT 4.1.0 WS MDS Aggregator Framework: Command Reference
A. GT 4.1.0 WS MDS Aggregator Framework: Aggregator Sources Reference
B. GT 4.1.0 WS MDS Aggregator Framework: Configuring the Execution Aggregator Source
GT 4.1.0 WS MDS Aggregator Framework: Configuring the Query Aggregator Source
GT 4.1.0 WS MDS Aggregator Framework: Configuring the Subscription Aggregator Source
WS MDS Index Service
Release Notes
System Administrator's Guide
User's Guide
Developer's Guide
Public Interface Guide
Quality Profile
C. Index Service Command Reference
D. Writing a Execution Aggregator Information Provider
E. GT 4.1.0 Call for Community Testing: WS MDS Index Service
WS MDS Trigger Service
Release Notes
System Administrator's Guide
User's Guide
Developer's Guide
Public Interface Guide
Quality Profile
F. Call for Community Testing
WS MDS WebMDS
Release Notes
System Administrator's Guide
User's Guide
Developer's Guide
Guide to Public Interfaces
Quality Profile
WS MDS UsefulRP
Release Note
System Administrator's Guide
User's Guide
Developer's Guide
Public Interface Guide
Quality Profile
G. GT 4.1.0 Element Producers
H. GT 4.1.0 Element Transforms
I. WS MDS Migration Guide
1. Migrating from GT2
2. Migrating from GT3
J. Samples for WS MDS
1. Building VOs using the DefaultIndexService