Summarized by

Uma Tadakamalla

December 4, 2017CS 788: Autonomic Computing1

Evolution of Self-architecting frameworks

for Self-healing and Self-configuration

Outline

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I. Introduction

II. Autonomic Computing

III. SASSY

IV. RASS

V. DeSARM

VI. DARE

VII. Conclusions

VIII. Future work

I. Introduction

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Challenging to install, configure, tune and maintain

software systems

Motivation for autonomic computing

- Systems manage themselves given high level objectives.

II. Autonomic Computing

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Properties of autonomic systems

- Self-configuration

- Self-optimization

- Self-healing

- Self-protection

Self-* systems

II. Autonomic Computing

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IBM’s MAPE-K model for autonomic computing

III. SASSY

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SOA architecture

- Components - services

- Connectors - communications between the services

Tuning Software architecture to meet functional

and QoS requirements is complex

III. SASSY

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SASSY – Self-Architecting for Software Systems

Centralized framework for Self-Architecting software systems for SOA

Generates optimal architecture at the initial system deployment.

Provides adaptation of the architecture in response to changing requirements and operating conditions.

Maintains near-optimal architecture at runtime that satisfy functional and QoS requirements, which maximizes system utility function

SASSY at Initial System Deployment

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SASSY - runtime self-rearchitecting

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IV. RASS

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RASS –Resilient Autonomic Software Systems

De-centralized framework – no single point of

failure

MAPE-K paradigm for autonomic systems

IV. RASS

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V. DeSARM

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Decentralized Software Architecture discoveRy

Mechanism

Automated mechanism for discovering software

architecture models at runtime in distributed

systems.

Part of RASS framework

Based on selective gossiping and message tracing

Scalable, and resilient to failures

V. DeSARM

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VI. DARE

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DARE – Distributed Adaptation and REcovery

framework for CBSAs.

Decentralized framework

- provides self-healing and self-configuration

Each node hosts an instance of DARE

Part of RASS framework

Uses DeSARM framework for architecture

discovery

DARE Architecture

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Conclusion

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Centralized frameworks for autonomous systems do not scale well for large systems, and have a single point of failure.

RASS – decentralization framework for autonomous systems

DeSARM – decentralized software architecture discovery mechanism for distributed systems.

DARE – decentralized adaptation and failure recovery framework for distributed systems.

Provides Self configuration and self-healing

Future work

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Research on decentralized framework for Self-

optimization and Self-protection

Comparison of RASS with other existing

decentralized frameworks for self-healing

Extending RASS to other type of architectures

References

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Questions and

Discussion