SALMon is a monitoring and quality assessment framework for services. It allows for monitoring QoS of services, checking for SLA violations, and notifying interested parties. The framework is technology agnostic, extensible, and easily interoperable. It monitors various metrics including response time, availability, and more. SALMon has been used in projects involving usage-based online testing, monitoring WS-Agreements, self-adaptive service-based applications, and monitoring cloud systems.

1. S-Cube Industry Workshop
SALMon
M.Oriol, X. Franch, J. Marco
http://gessi.lsi.upc.edu/salmon

2. Introduction
Monitoring and quality assessment framework for
services
 Monitoring QoS of services
 Check for SLA violations
 Notify the interested parties
© S-Cube

3. SALMon
Main features and characteristics:
Technology Monitoring
agnostic design and Testing
Extensible Easily
add metrics interoperable
© S-Cube

4. SALMon
The framework
SALMon
tester monitor Response Time
SOAP Availability
REST ...
···
serv. user Service
© S-Cube

5. SALMon
The framework Service Oriented System
Monitor service
 measure instruments
Analyzer service
© S-Cube

6. SALMon
The framework Design architecture
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7. SALMon
The framework Current monitored metrics
 Response Time  Round-trip time
 Current R.T.  Current RTT
 Average R.T.  Average RTT
 Maximum R.T.  Maximum RTT
 Minimum R.T.  Minimum RTT
 Execution Time  Availability
 Current E.T.  Current Avail.
 Average E.T.  Average Avail.
 Maximum E.T.  Other
 Minimum E.T.  Input
 Output
© S-Cube

8. SALMon
Working collaborations
Usage-based Monitoring Self-Adaptive Monitoring
Online testing WS-Agreements SBAs the cloud
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9. SALMon
Usage-based Online testing
Problem:
determining representative test cases to combine testing
with monitoring for making better prediction of failures
Idea:
Exploiting operational profile to determine what to test
and augment the monitoring data with testing to
perform analysis with more QoS data.
© S-Cube

10. SALMon
Usage-based Online testing
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11. SALMon
Usage-based Online testing
© S-Cube

12. SALMon
Monitoring WS-Agreements
Problem:
Check the fullfilment of SLAs specified in WS-Agreement
at runtime
Idea:
Generate from the WS-Agreements a Monitoring Model
Document (MMD), which (1)specifies the configuration
of the monitor and (2) is used to express the QoS results

13. SALMon
Monitoring WS-Agreements
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14. SALMon
Monitoring WS-Agreements
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15. SALMon
Monitoring WS-Agreements

16. SALMon
Self-Adaptive SBAs
Problem:
How to avoid SLA violations at runtime?
Idea:
Adapt the services that are to be executed in the SBA, in
order to correct the deviations of previous executed
services.
© S-Cube

17. SALMon
Self-Adaptive
SBAs

18. SALMon
Self-Adaptive
SBAs

19. SALMon
Monitoring the cloud
Problem:
How to know the QoS of cloud systems in order to select
the best cloud?
Idea:
Deploy over these cloud systems, a prepared set of
services, where each one makes usage of a particular
facet of the system (network, cpu, storage,…) in different
degrees of intensity and monitor the QoS of these
services
© S-Cube

20. SALMon
Monitoring the cloud
© S-Cube

21. SALMon
Monitoring the cloud
Deployment @runtime in the Virtual Machines
© S-Cube

22. SALMon
Conclusions
 Implemented as Service Based System
 Services: Monitor, Analyzer
 Easy integration with other frameworks
 Several features
 Technology agnostic
 Combines monitoring and testing
 Extensible with new metrics
 Used in different frameworks
 Applied in 4 projects from S-Cube.
 Supports several distinct objectives
© S-Cube

23. That’s all!
Thanks for your attention!
Any questions?
Marc Oriol moriol@lsi.upc.edu
Xavier Franch franch@essi.upc.edu
Jordi Marco jmarco@lsi.upc.edu
http://gessi.lsi.upc.edu/salmon
© S-Cube