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Federal University of Technological Santa Catarina (UFSC) Center (CTC) Brazil Informatics and Statistics Department Informatics and Statistics Department A Wireless Wireless Monitoring Monitoring Approach for a Approach for a A HA-OSCAR


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Federal University of Santa Catarina (UFSC) Brazil Technological Center (CTC)

Informatics and Statistics Department Informatics and Statistics Department

A A Wireless Wireless Monitoring Monitoring Approach for a Approach for a HA-OSCAR Cluster HA-OSCAR Cluster Environment Environment M.A.R. Dantas M.A.R. Dantas and and C.

  • C. Rista

Rista

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Agenda

  • Introduction
  • HA-OSCAR
  • Wireless LAN
  • The WLAN Monitoring
  • Experimental Results
  • Conclusions
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Agenda

  • Introduction
  • HA-OSCAR
  • Wireless LAN
  • The WLAN Monitoring
  • Experimental Results
  • Conclusions
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SLIDE 4

Introduction

  • In this article we present a prototype

implementation project to utilize a wireless LAN together with a mobile computing approach to enhance the monitor function

  • f a HA-OSCAR configuration. The

environment considered was the IEEE 802.11b/g wireless LAN where a mobile device receives specific information about the primary (or standby) node.

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Agenda

  • Introduction
  • HA-OSCAR
  • Wireless LAN
  • The WLAN Monitoring
  • Experimental Results
  • Conclusions
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SLIDE 6

HA-OSCAR

  • The environment from a HA-OSCAR has three main

components:

  • Primary Server – it is responsible for the submission of all

tasks to client nodes.

  • Standby Server – it is a full image of the primary server.
  • Clients – these machines are responsible to execute all the

tasks submitted to the cluster.

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SLIDE 7

HA-OSCAR (Example)

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Agenda

  • Introduction
  • HA-OSCAR
  • Wireless LAN
  • The WLAN Monitoring
  • Experimental Results
  • Conclusions
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SLIDE 9

Wireless LAN

  • The IEEE 802.11 defines two operations modes:

structured network and ad-hoc environment.

  • IEEE 802.11a
  • IEEE 802.11b
  • IEEE 802.11g
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Agenda

  • Introduction
  • HA-OSCAR
  • Wireless LAN
  • The WLAN Monitoring
  • Experimental Results
  • Conclusions
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The WLAN Monitoring

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The WLAN Monitoring

  • In the cluster environment, we used the following

software:

  • OSCAR 3.0
  • HA-OSCAR 1.0 beta
  • GNU/Linux (Red Hat Linux 9.0)
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The WLAN Monitoring

  • In addition, during the design and implementation

phase of our prototype we used the following software: GCC version 3.2.2, PRC-Tools, Palm OS SDK, PilRC and POSE.

  • These software packages allow the creation of C

and C++ applications for the Palm OS platform, using the GNU/Linux environment.

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The WLAN Monitoring

  • The developed tool is characterized by two main modules:
  • The first component (haoscar_standby.c) is responsible

for monitoring the master (or primary) node. This module also exists in the standby (or secondary) node.

  • On the mobile device side, we design a module

(haoscar.prc) to execute under the Palm OS to process messages sent by the primary node from the HA-OSCAR environment.

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The WLAN Monitoring

  • The structure of the mobile Palm OS module is

presented in figure below:

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Agenda

  • Introduction
  • HA-OSCAR
  • Wireless LAN
  • The WLAN Monitoring
  • Experimental Results
  • Conclusions
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Experimental Results

  • This figure shows a

notification of execution received by the mobile device.

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Experimental Results

  • This figure shows a

notification of problem received by the mobile device.

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Agenda

  • Introduction
  • HA-OSCAR
  • Wireless LAN
  • The WLAN Monitoring
  • Experimental Results
  • Conclusions
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Conclusions

  • In this article we have presented one tool

(prototype) that was designed and implemented to improve the monitoring function of the HA-OSCAR software

  • environment. Our prototype extends the

facilities found in the wired network to mobile devices executing Palm OS in a wireless LAN.

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Questions? Questions?

Mario Dantas Mario Dantas

Federal Federal University of Santa University of Santa Catarina Catarina (UFSC) (UFSC) Department of Informatics and Statistics Department of Informatics and Statistics

mario mario@inf. @inf.ufsc ufsc. .br br Cassiano Rista Cassiano Rista

Federal Federal University of Santa University of Santa Catarina Catarina (UFSC) (UFSC) Department of Informatics and Statistics Department of Informatics and Statistics rista rista@inf. @inf.ufsc ufsc. .br br