PerfSONAR getting started

From GEANT2-JRA1 Wiki

1 Why use perfSONAR ?
2 perfSONAR Web Services and Visualisations
3 How to Deploy perfSONAR ?
4 Deployment and Evaluation
5 Do you need help?

Why use perfSONAR ?

Example 1: retrieve link utilization on a given path

perfSONARUI can display the link utilization on all links of a given path. It makes it possible to find easily the origin of congestions that may cause performance problems.

perfSONARUI retrieves the link utilization information from perfSONAR Measurement Archives (MA's), being capable to export information stored in Round-Robin Databases (RRD). These so called RRD-MA's must be deployed in all networks of the path being monitored so that the utilization can be displayed for all crossed links.

 To exchange your link utilization, install RRD-MA
 To view the link utilization for a path, install perfSONARUI

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Example 2: publish easily the information you can provide

The perfSONAR Lookup Service (LS) makes it possible to clearly describe the perfSONAR services that you have deployed and the network characteristics you are publishing. The LS is the entry point for the perfSONAR monitoring applications: they first ask the LS where they can fetch the information requested, and then they query the services reported by the LS.

The Lookup Service is aimed at being fully distributed but the implementation at this stage only makes it possible to deploy a central LS where services can register.

 To publish your perfSONAR capabilities, deploy a Lookup Service

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Example 3: A unified looking glass for all networks

An interdomain looking glass makes it possible to retrieve from a single application information from routers located in different administrative domains. The looking glass query telnet/SSH Measurement Points (MP). These MP's need to be configured to relay the queries to the routers, using SSH or telnet. The telnet/SSH MP can be configured to accept only specific queries (or commands) to protect the network from malicious users.

 To give a restricted telnet/SSH access to your network, download the telnet/SSH MP
 To be able to execute commands on routers in different newtorks, download the Looking glass user interface

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perfSONAR Web Services and Visualisations

perfSONAR offers a set of components for enabling exchange of monitoring information. The components designed (and their relative implementation statuses) are:

A Multi-Domain Monitoring perfSONAR product brief (relase 3.0) is available and describes the perfSONAR visualisation tools and the benefits for a network deploying it.

Measurement Archive (MA) - Publishes archived measurements for these database types:
- RRD
- SQL

Measurement Point (MP) - Creates/publishes monitoring information related to active and passive measurements. Implemented measurements are:
- PING
- Telnet / SSH
- SNMP (Get only)

E2E Link Status Monitoring - Page dedicated for the support of the L2 status circuit monitoring.

Lookup Service (LS) - Registers all participating service components and their capabilities

Authentication Service (AuthN) - Manages domain-level access to service components via tokens - NOT YET IMPLEMENTED

Transformation Service (TS) - Offers custom data manipulation of existing archived measurements - NOT YET IMPLEMENTED
- Topology Service (ToS) - NOT YET IMPLEMENTED

Resource Protector Service (RPS) - Manages granular details regarding system resource consumption - NOT YET IMPLEMENTED

User Interface - Retrieves the monitoring data from the different services and publishes it to the end-user. Available user interfaces are:
- PerfsonarUI (simple text user interface)
- LookingGlassClient

GN2-05-057v5.pdf gives the complete understanding of the different services and the way they interact together.

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