TOSCA and OpenTOSCA: TOSCA Introduction and OpenTOSCA Ecosystem Overview

TOSCA and OpenTOSCA
Contents:
1. TOSCA Introduction
2. OpenTOSCA Ecosystem Overview
Gefördert durch:

Tobias Binz, Uwe Breitenbücher, Oliver Kopp, Frank Leymann
Förderschwerpunkt:

Projektträger:

www.opentosca.org

OASIS TOSCA

CloudCycle

Topology and Orchestration
Specification for Cloud Applications
Goals:
• Automation of Deployment and Management
• Portability
• Interoperability
• Vendor-neutral Ecosystem

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

3

OASIS TOSCA

CloudCycle

Specification for Cloud Applications
100+ participants from 40+ companies:

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

4

TOSCA Overview

CloudCycle

Specification for Cloud
Applications


5

CloudCycle

TOSCA Overview

Topology
Service Structure

Orchestration
Service Orchestration for
Deployment & Management

WebServer
(Tomcat)

Start VM
OperatingSystem
(Ubuntu 12.04 LTS)

Install
Tomcat

VirtualServer
EC2 (AWS EC2 Server)


6

Graphical Example of an Application Topology

CloudCycle

OnlineBookstore
(WAR)

WebServer
(Tomcat)

OperatingSystem
(Ubuntu 12.04 LTS)

VirtualServer


7

Graphical Example of an Application Topology

OnlineBookstore
(WAR)

Node Template

CloudCycle

(hostedOn)

Node Type
WebServer
(Tomcat)

Relationship Template

(hostedOn)
OperatingSystem
(Ubuntu 12.04 LTS)
(hostedOn)

Relationship Type

VirtualServer


8

Properties

CloudCycle

OnlineBookstore
(WAR)

WebServer
(Tomcat)
User: Admin
PW: 7a!7q

Properties

OperatingSystem
(Ubuntu 12.04 LTS)

VirtualServer
IP: 147.187.2.1


9

Deployment Artifacts
OnlineBookstore
(WAR)



bookstore.war

CloudCycle


WebServer
(Tomcat)

Artifacts providing the
node’s functionality
Multiple Deployment
Artifacts possible

Tomcat.zip
Tomcat7 (apt, deb, …)
http://tomcat.apache.org

OperatingSystem
(Ubuntu 12.04 LTS)
Ubuntu.ovf
ami-d0f89fb9t

CustomizedUbuntu.img

10

Management Operations & Implementation Artifacts
appSpecific

WebServer
(Tomcat)

CloudCycle

OnlineBookstore
(WAR)

start, stop
deployWAR

OperatingSystem installPkg
(Ubuntu 12.04 LTS) execScript

EC2

createVM
VirtualServer
(AWS EC2 Server) terminate

Define management operations
of nodes (and relationships)
 Input & output parameters
and their data types
 Implemented by
Implementation Artifacts
(Web Service, REST-service,
Script, …)
instanceType : String
region : String
accessKey : String
…

Instance ID : String

11

Capabilities and Requirements I
Application
(WAR)

C

CloudCycle

(hostedOn)

I provide a Linux
Operating System

WebServer
(TomCat)

Requirement
Capability
R
I need to be
hosted on a Linux
Operating System


OperatingSystem
(Ubuntu)

12

Capabilities and Requirements II
Application
(WAR)

CloudCycle

(hostedOn)

WebServer
(TomCat)

Requirement

(Tomcat-installedOn-Ubuntu)

Capability
OperatingSystem
(Ubuntu)

13

CloudCycle

TOSCA Overview

Topology
Service Structure
WebServer
(Tomcat)

OperatingSystem
(Ubuntu 12.04 LTS)

Orchestration
Service Orchestration for
Deployment & Management
Start VM

Install
Tomcat

VirtualServer


14

Two Flavors of Processing


Declarative  What?


CloudCycle



WebServer
(Tomcat)

Example: “I want this, realize it!”
Runtime interprets topology
and does deployment

OperatingSystem
(Ubuntu 12.04 LTS)

VirtualServer



Imperative  How?



WebServer
(Tomcat)

Example: “First do this, than that.”
Management plan explicitly describes
each step
Start VM

OperatingSystem
(Ubuntu 12.04 LTS)

Install
Tomcat

VirtualServer


15

Declarative vs. Imperative – Discussion

CloudCycle

Imperative Style

Declarative Style

Logic completely
contained in
Application

Logic completely
implemented by
Container

Hybrid Approach

Deployment Flow
Flexibility & Customizability
Ease of Modeling
Low Entry Barrier


16

Management Plans Overview
Deployment Logic is implemented by portable Plans

CloudCycle

Install
Tomcat

Deploy
Application

Application
(WAR)
(hostedOn)

2
deploy

WebServer
(TomCat)

1
(hostedOn)

installPkg


OperatingSystem
(Ubuntu)

17

Plans


Plans are workflows (BPEL, BPMN, etc.)



CloudCycle











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)


18

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

Types

CloudCycle

OnlineBookstore
(WAR)

Management Plans

X

Type

(hostedOn)
WebServer
(Tomcat)

Properties
Definition

Interfaces

(hostedOn)
Installables

Services

Images

OperatingSystem
(Ubuntu 12.04 LTS)

Scripts

(hostedOn)

EC2

VirtualServer
(AWS EC2 Server)

Deployment Artifacts Implementation Artifacts

Cloud Service Archive (CSAR)

19

Portability Note


CloudCycle





TOSCA deals with portability of Service Templates
Portability of the ingredients of an IT Service
(especially the code artifacts) is not addressed
by TOSCA
Similarly, mobility of data used by a corresponding
service instance is not in the scope of TOSCA


21

Why is this portable ?


CloudCycle





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


22

Container

Self-Service

CloudCycle

Modeling Tool

Creation and modeling of TOSCA applications, including
graphical modeling of topologies and management plans.
Exported as Cloud Service Archive (CSAR) for TOSCA runtime.

24

Container

Self-Service

CloudCycle

Modeling Tool

Creation and modeling of TOSCA applications, including
graphical modeling of topologies and management plans.
Exported as Cloud Service Archive (CSAR) for TOSCA runtime.

25

Container

Self-Service

CloudCycle

Modeling Tool

TOSCA runtime & middleware
Processes CSARs, runs plans, manages state, …

26

Container

Self-Service

CloudCycle

Modeling Tool

Offering the deployed CSARs to the
end user for easy instantiation

27

Container

Self-Service

CloudCycle

Modeling Tool

Offering the deployed CSARs to the
end user for easy instantiation

28

CloudCycle

Ecosystem Structure & Relations

Admin

Admin UI
/admin

Self-Service UI
/vinothek

End User

Use container
API

Modeling Tool
/winery

CSAR


OpenTOSCA
Container

29

CloudCycle

Demo Videos

Demo videos are available at
http://demo.opentosca.org/


30

TOSCA and OpenTOSCA: TOSCA Introduction and OpenTOSCA Ecosystem Overview

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