Constellation: a Multi-Cloud Application Designed with the MODAClouds Integrated Modelling Environment

FP7-ICT-2011-8-318484www.modaclouds.eu

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Constellation: a Multi-Cloud Application Designed with the

MODAClouds Integrated Modelling Environment

SOFTEAM : Marcos Almeida

POLIMI : Danilo Ardagna

SINTEF : Nicolas Ferry

IMPERIAL / U Melbourne : Juan F. Perez

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Who are we ? Softeam, Modelio Modeling Tool

• SOFTEAM – a French IT services / Software vendor of 900 people• Specialist in OO

technologies, new architectures, methodologies

• Banking, Defense, Telecom

• MODELIO : UML editor with 20 years’ history• UML/BPM modeling tool• Code generation• Documentation• Available under open source

at Modelio.org

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Constellation: We embrace the cloud(s)

Released in December 2013 Target with MODAClouds

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Modelio & Constellation Videos

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We need to support our clients’ heterogeneityConstellation needs to be…

• Cloud vendor independent• Some need on premises ‘private cloud’ hosting• Some are ok with public cloud hosting• What if any of these constraints change?

• Cost effective• MODAClouds will help us to support this

heterogeneity in a cost effective way• Adaptive

• MODAClouds will help us to support this heterogeneity in a automated way

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We evaluated MODAClouds design and runtime tools

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MODAClouds (www.modaclouds.eu)

• Integrated Project n. 318484 • October 1st 2012 – September 30th 2015

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MODAClouds provides methods, a decision support system, an open source Integrated Development Environment (IDE) and Run-time

Environment for the high-level design, early prototyping, semi-automatic code generation, and automatic deployment of applications on

multi-Clouds with guaranteed Quality of Service (QoS).

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Cloud Computing

• Infrastructure / platform virtualization

• Why?• Economy of scale• Cost reduction• Flexibility

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Webapplication

Bare metalServers

Webapplication

Software definedPlatform /

infrastructure

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Cloud Challenges

• Vendor Lock-in • Heterogeneity and lack of interoperability among different

Cloud providers

• Performance Variability:• Cloud performance can vary at any point in time• Unavailability problems exist even when 99.9% up-time is

advertised

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MODAClouds Solutions• Vendor Lock-in

• Performance Variability

• Build your solution to be cloud provider independent!• Model driven engineering

• Be ready to move to other clouds opportunistically• Multi clouds!

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Separation from provider-specific details

• Cloud Computing: manage your (many) infrastructures and your (many) platforms:• CCIM: concepts that are

independent even from the cloud.

• CPIM: cloud concepts that are independent of any cloud provider.

• CPSM: cloud provider specific details to specify how to run the system on a specific cloud.

CCIM

CPIM

CPSM

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Design time tools to build cloud provider independent applications

Identify the bestcloud services

Optimize configuration

(w.r.t. cost & QoS constraints)

Deploy on multiple clouds

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Define application architecture & deployment

configuration

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4

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Runtime tools to manage multi-cloud deployments

Monitor

Dynamically optimize configuration

Adapt to multiple clouds

Providers

design

runtime

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Results• >= 9 supported cloud services

• IaaS: Amazon EC2, Flexiant, CloudSigma, Openstack, Azure plus all IaaS supported by jCloud.

• PaaS: Cloud Foundry, AWS RDS, AWS SQS, AWS Beanstalk

• 4 case studies• SOFTEAM (FR): Single cloud to multi clouds• BoC (FR): Cloudifying desktop windows application• ATOS (ES): Healthcare application• Siemens (RO): Smart City urban safety planner

FP7-ICT-2011-8-318484www.modaclouds.eu

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Back to Constellation…

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We used Creator4CloudsWhat for•Define a cloud ready architecture based on an assembly of scalable components•Plan monitoring strategy and model monitoring rules•Model and test several deployment configurations

Benefits•Provide an approach for scalable multi-cloud application architecture•Model once, deploy to multi-clouds•Explore a large set of deployment configuration

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Creator 4Clouds model of Constellation – CCIM level

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Creator 4Clouds model of Constellation – CPSM level

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Video Creator 4Clouds

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We used SPACE Dev 4CloudsWhat for •Early analysis of diverse deployment scenarios•Select an initial deployment architecture for our application

Benefits•Automated fine analysis of costs before deployment•Allow us to chose an initial deployment architecture

The MODAClouds Approach

Creator 4Clouds

Palladio Bench + SPACE4Clouds +

LINE21

Layered Queueing NetworksExample: getProjectData Service

Task getProjectData

Entry getProjectData

Internal Action

External Call

Task databaseAccess

Entry databaseAccess

Internal Action 22

LINE Performance Model• Fluid Solver for Layered Queueing Network Models – Efficient and Scalable evaluation

• Fluid models: • Set of ordinary differential equations• Numerical solution• Goes beyond the mean values studied by traditional

techniques, e.g., time-varying metrics, transients, ...

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Design-time Exploration General Idea

Performance Engine

• LINE• LQNS• Simucom

Optimization Engine

• Initial Solution Based on MILP• Tabu-search engine

Enriched Palladio Model• Set of providers• Allocation profiles• Types of VMsAmazon

Azure

24Amazon

Azure

Google

Candidate Cloud Providers

Conference service: improved Constellation architecture• Read intensive cloud application• High tolerance to eventual consistency• Solution: direct reads to easy to scale read only copies

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Writes

Reads

Daily Costs Trend

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Infeasible region

50-100 Peak Users

adminServer: XSsvnAgent: XShttpAgent: XS

coferenceAgent: XS conferenceReplica: XS

50-100 Peak Users

adminServer: XSsvnAgent: XShttpAgent: XS

coferenceAgent: XS conferenceReplica: XS

150-250 Peak Users

adminServer: XSsvnAgent: XShttpAgent: XS

coferenceAgent: MconferenceReplica: XS

150-250 Peak Users

adminServer: XSsvnAgent: XShttpAgent: XS

coferenceAgent: MconferenceReplica: XS

300-400 Peak Users

adminServer: XSsvnAgent: XShttpAgent: XS

coferenceAgent: MconferenceReplica: XS (2 at

peaks)

300-400 Peak Users

adminServer: XSsvnAgent: XShttpAgent: XS

coferenceAgent: MconferenceReplica: XS (2 at

peaks)

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Update and Commit Model Response Times

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Video on SPACE 4Clouds

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Key benefits on MODAClouds

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Commercial exploitation of the Constellation Server• First commercial version since end 2014

• Developed during MODAClouds project• Using MODAClouds tools• Exploiting MODAClouds components

• SaaS offering is coming next.• Implementation of new Cloud services are planned.

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Thank you!Visit us and adopt our tools at•Scientific website - http://www.modaclouds.eu•MultiClouds Alliance website - http://multiclouddevops.com •Creator 4Clouds - http://forge.modelio.org/projects/creator-4clouds/•Constellation - https://www.modeliosoft.com/en/products/modelio-constellation.html

… questions?