tosca and opentosca: tosca introduction and opentosca ecosystem overview

Tobias Binz, Uwe Breitenbücher, Oliver Kopp, Frank Leymann

Gefördert durch:

Förderschwerpunkt:

Projektträger:

www.opentosca.org

TOSCA and OpenTOSCA

Contents:

1. TOSCA Introduction

2. OpenTOSCA Ecosystem Overview

http://www.opentosca.org/


2

TOSCA Introduction

© Binz, Breitenbücher, Kopp, Leymann | IAAS | University of Stuttgart 3

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OASIS TOSCA

Topology and OrchestrationSpecification for Cloud Applications

Goals:• Automation of Deployment and Management• Portability• Interoperability• Vendor-neutral Ecosystem


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OASIS TOSCA

Topology and OrchestrationSpecification for Cloud Applications

100+ participants from 40+ companies:

OASIS Topology and Orchestration Specification for Cloud Applications (TOSCA) TC

https://www.oasis-open.org/committees/tosca


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TOSCA Overview

andSpecification for Cloud

Applications

Topology Orchestration


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TOSCA Overview

Service Structure Service Orchestration for

Deployment & Management


Start VMInstall

TomcatOperatingSystem

(Ubuntu 12.04 LTS)

VirtualServer

(AWS EC2 Server)

WebServer

(Tomcat)

EC2


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Graphical Example of an Application Topology

OnlineBookstore

(WAR)

OperatingSystem

(Ubuntu 12.04 LTS)

VirtualServer

(AWS EC2 Server)

WebServer

(Tomcat)

EC2


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Graphical Example of an Application Topology

OnlineBookstore

(WAR)

OperatingSystem

(Ubuntu 12.04 LTS)

VirtualServer

(AWS EC2 Server)

WebServer

(Tomcat)

EC2

Node Template

Relationship Template

Node Type

(hostedOn) Relationship Type

(hostedOn)

(hostedOn)


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Properties

OnlineBookstore

(WAR)

OperatingSystem

(Ubuntu 12.04 LTS)

VirtualServer

(AWS EC2 Server)

WebServer

(Tomcat)

EC2

PropertiesUser: Admin

PW: 7a!7q

IP: 147.187.2.1


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Deployment Artifacts

OnlineBookstore

(WAR)

OperatingSystem

(Ubuntu 12.04 LTS)

WebServer

(Tomcat)

bookstore.war

Artifacts providing the node’s functionality

Multiple Deployment Artifacts possible

http://tomcat.apache.org

Tomcat.zip

Tomcat7 (apt, deb, …)

CustomizedUbuntu.img

Ubuntu.ovf

ami-d0f89fb9t


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Management Operations & Implementation Artifacts

Define management operations of nodes (and relationships)

Input & output parametersand their data types

Implemented by Implementation Artifacts(Web Service, REST-service, Script, …)

WebServer

(Tomcat)

OperatingSystem

(Ubuntu 12.04 LTS)

OnlineBookstore

(WAR)

VirtualServer

(AWS EC2 Server)EC2

appSpecific

deployWAR

start, stop

installPkg

terminate

createVM

execScript

instanceType : String

region : String

accessKey : String

…

Instance ID : String


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Capabilities and Requirements I

Application

(WAR)

WebServer

(TomCat)

(hostedOn)

Requirement

I need to be

hosted on a Linux

Operating System

R OperatingSystem

(Ubuntu)

Capability

I provide a Linux

Operating System

C


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Capabilities and Requirements II

Application

(WAR)

WebServer

(TomCat)

(hostedOn)

Requirement

OperatingSystem

(Ubuntu)

Capability

(Tomcat-installedOn-Ubuntu)


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TOSCA Overview

Service Structure Service Orchestration for

Deployment & Management


Start VMInstall

TomcatOperatingSystem

(Ubuntu 12.04 LTS)

VirtualServer

(AWS EC2 Server)

WebServer

(Tomcat)

EC2


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Two Flavors of Processing

Declarative What?

Example: “I want this, realize it!”

Runtime interprets topologyand does deployment

Imperative How?

Example: “First do this, than that.”

Management plan explicitly describeseach step

OperatingSystem

(Ubuntu 12.04 LTS)

VirtualServer

(AWS EC2 Server)

WebServer

(Tomcat)

EC2

OperatingSystem

(Ubuntu 12.04 LTS)

VirtualServer

(AWS EC2 Server)

WebServer

(Tomcat)

EC2

Start VMInstall

Tomcat


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Ease of Modeling

Low Entry Barrier

Declarative vs. Imperative – Discussion

Deployment Flow

Flexibility & Customizability

Logic completely

implemented by

Container

Logic completely

contained in

Application

Imperative Style Declarative Style

Hybrid Approach


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Management Plans Overview

Application

(WAR)

OperatingSystem

(Ubuntu)

WebServer

(TomCat)

(hostedOn)

(hostedOn)

Install

Tomcat

Deploy

Application

Deployment Logic is implemented by portable Plans

deploy

installPkg

2

1


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Plans

Plans are workflows (BPEL, BPMN, etc.)

Plans are portable, reusable, and automated

Parallel execution

Error handling

Traceability/auditability

Long running processes

Recoverability

Human tasks

Management logic shipped together with application

Management not hard-wired into the TOSCA container

Contained in CSAR (TOSCA packaging format)


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What’s contained in an Cloud Service Archive (CSAR)?

Cloud Service Archive (CSAR)

X

Topology Templates Management Plans

Installables

Images

Services

Scripts

Types

Type

InterfacesProperties

Definition

OnlineBookstore

(WAR)

OperatingSystem

(Ubuntu 12.04 LTS)

VirtualServer

(AWS EC2 Server)

WebServer

(Tomcat)

EC2

(hostedOn)

(hostedOn)

(hostedOn)

Deployment Artifacts Implementation Artifacts

20

TOSCA Portability


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Portability Note

TOSCA deals with portability of Service Templates

Portability of the ingredients of an IT Service (especially the code artifacts) is not addressedby TOSCA

Similarly, mobility of data used by a corresponding service instance is not in the scope of TOSCA


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Why is this portable ?

Management operations defined in TOSCA standard

Management Operations, i.e., Implementation Artifacts, are deployed by the TOSCA runtime

Plans defined using standards (e.g., BPEL, BPMN)

Plans (1) and Management Operations (2) are “bound” (i.e., connected) by the container Implementation Artifacts on the realization level

23

OpenTOSCA Ecosystem Overview

Open Source TOSCA Ecosystemwww.opentosca.org

© IAAS, University of Stuttgart

http://www.opentosca.de/


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Creation and modeling of TOSCA applications, including graphical modeling of topologies and management plans.

Exported as Cloud Service Archive (CSAR) for TOSCA runtime.

Self-ServiceModeling Tool Container


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Creation and modeling of TOSCA applications, including graphical modeling of topologies and management plans.

Exported as Cloud Service Archive (CSAR) for TOSCA runtime.



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TOSCA runtime & middlewareProcesses CSARs, runs plans, manages state, …



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Offering the deployed CSARs to theend user for easy instantiation



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Ecosystem Structure & Relations

Modeling Tool

/winery

OpenTOSCA

Container

Self-Service UI

/vinothek

Admin UI

/admin

CSAR

Use container

API

End UserAdmin


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Demo Videos

Demo videos are available athttp://demo.opentosca.org/

http://demo.opentosca.org/

tosca and opentosca: tosca introduction and opentosca ecosystem overview

Technology

string binz

uwe breitenbcher

tobias binz

oliver kopp

cloud applications binz

application management

frank leymann frderschwerpunkt

vmoperatingsystem ubuntu