Last Updated: December 2014

Manage Composite Application with Apache Stratos

Reka Thirunavukkarasu

Senior Software Engineer, WSO2Committer & PMC member, Apache Stratos

Composite Applications in Apache Stratos 4.1.0

Udara LiyanageSoftware Engineer, WSO2Committer & PMC member, Apache Stratos

Chamila de AlwisSoftware Engineer, WSO2Committer & PMC member, Apache Stratos

http://stratos.apache.org/

*

๏ What is Stratos๏ What is a Composite Application Model๏ Sample composite applications๏ Metadata API ๏ Demo with tomcat - WSO2 Identity Server SAML SSO

Roadmap

*

oApache Stratos is a highly-extensible Platform-as-a-Service (PaaS) framework

oMultifactored AutoscalingoLoad Balancer as a cartridgeoHigh availabilityoCloud burstingoMultitenancy

Stratos

Stratos Manager

AutoScaler

Cloud Controller

MySQL PHP WSO2 ISWSO2 ESB

Str a

tos

Iaa S

Admin / Service Creator

Service User

Architecture

ESB

Tomcat

PHP

MySQL

PostGreSQL

Mediation Application Database

ESB TomcatPHP

MySQLPostGreSQL

STRATOS 4.0.0

Problems?

o Managing multiple services that are grouped together in the real worldo Startup dependencies among services o Termination behavior among dependent serviceso Scaling rules among services and service groupso Sharing data among services and service groups

o Allows to deploy an application that required to have different service runtimes (cartridge) with their relationship, dependencies and deployment pattern.

o Defines a service group by aggregating different service runtimes with their unique behaviours such as startup order, termination behaviour and scaling behaviour.

o Eg: DataBase group consists of mysql and postgres

o Group supports nested group and their behaviour as well

Composite Application Model

Instance Life cycle

mysql-php-group

mysql php

LAMP

startup order

Application

Group

Cartridges

mysql-php-group

mysql php

LAMP

startup order

Application

Group

Demo

Group

Tomcat WSO2 Identity Server

TOMCAT SAML SSO

Application

Cartridges

Cartridge Agent

Service - Tomcat

MB Event

CA PluginOn MB Event

Start/ Restart Service

Cartridge Instance

*

Dependent Scaling๏ When one cluster scales up, scale up the dependent

group/cluster as well

Predicted No of instances for c3 is 4

o PaaS manages heterogeneous service runtimes(cartridges)

o Cartridges have dependencies to other cartridgeso Subset of cartridges can be grouped together by defining

the group behaviourso Easy to maintain application and their dependencies by

providing monitoring, handling app behaviours and elastic scaling.

Why Composite Application in Cloud ?

*

More Information !

๏ http://lakmalsview.blogspot.com๏ Composite applications

https://cwiki.apache.org/confluence/display/STRATOS/4.1.0+Composite+Applications

Thank you!Questions..?

*

Thank you…!

Questions..?

Architecture

Packaging of Composite Application

o Application consists of groups and cartridges/serviceso Group can also consist of another group as nested

manner and cartridges/services.