GlassFish in the Virtual World

1 Copyright © 2011, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 8

2 Copyright © 2011, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 8 2 Copyright © 2011, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 8 2 Copyright © 2011, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 8

The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.


GlassFish in the Virtual World How GlassFish turns into a PAAS provider


Agenda

•  Introduction •  PaaS • GlassFish as a PaaS provider •  IaaS Management Service • Orchestration •  Elasticity

5 Copyright © 2011, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 8 5 Copyright © 2011, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 8 5 Copyright © 2011, Oracle and/or its affiliates. All rights reserved. Insert Information Protection Policy Classification from Slide 8

Requirements

t0 t1 t2 t3

Development Hardware procurement Application Installation

Prototyping Testing Hardware installation Certification

Development and Deployment Timeline

The I.T. rift


Introduction ([I|P|S]aas)

Isolation

Elasticity

Mutil-Services

PAAS

SAAS

IAAS Virtualization, Storage, Network

Java EE instances and Resources

Multi-tenant Java EE application


Application Installation

•  Install Java EE application server on all hardware • Create a dedicated (static) cluster of Java EE server

instances • Map incoming traffic to Java EE server instances • Resolve cluster dependencies (MQ, Database) • Change Java EE application runtime descriptor to map to

the deployment cluster (optional) • Deploy the application


Agenda



PaaS to the rescue

•  I.T. departments can offer usual services through a private PaaS : – No delay – Secure – Maximize hardware utilization – Monitoring

• Developers –  Faster time to market. – Easier deployment facilities


What does PaaS mean for Java EE

• One Step deployment : – Multi-services interdependencies resolution – Cluster of Java EE server instances procurement – Cluster elasticity :

• Metrics provided by application • Application Server metrics (response time, etc..) • Virtual Machine information (CPU, Memory usages)

•  And one step un-deployment…


Agenda



Requirements on GlassFish

• Capable of creating/starting/stopping/deleting Virtual Machines

• Capable of monitoring Virtual Machines • Capable of self-shaping the cluster based on statistics • Understands service definitions • Understands service references •  Bind references to definitions using virtual machines


GlassFish in the Cloud

Cloud Resources

Configuration

KVM Plugin

Template Management

Hypervisor Abstraction

OVM Plugin VirtualBox plugin

Iaas Management Service

Orchestration Engine

Elasticity Management Service

Service Provisioning Engine

Versioning

Template matching

Service Association

Service Discovery

Adjust cluster shape

Monitor deployed

Applications


GlassFish as a PaaS Provider

Virtual Machine with Database

service

Virtual Machine With Load Balancer

Application introspection

Virtual Cluster Creation

Virtual Machine with Java EE

Association Deployment

Timeline


Agenda



IMS Architecture

Libvirt interface layer

KVM Plugin KVM Specific

CLIs

KVM specific configuration

OVM Plugin VirtualBox plugin

Service Provisioning

Engine virt-core

Common CLIs Common configuration


Three virtualization implementations

•  Laptop mode – Runs processes on the bare metal operating system. – All service types supported (not all variations)

•  Local mode –  Locally installed hypervisor – Best fidelity to deployment scenario

• Remote mode – Connects to remote hypervisors


Hypervisor plugin Hypervisor Local Mode Remote Mode

Laptop mode Yes Soon

KVM Yes Yes

Xen Yes Yes

VirtualBox Yes No

OVM Yes Yes

Vmware Yes Yes


Topology

IaaS Management Service

Server Pool Server Pool Asia

Server Pool Europe

Oracle VM Manager

IaaS Provider (Amazon)

Oracle Enterprise Manager Machines in

France Machines in U.K. Machines in

Germany


Agenda



Services

•  It’s all about Services, how to provide them, how to resolve them and eventually how to inject them. – Provisioned

• Application Scoped • Global/Shared

– External

•  Service Metadata – Service Definition – Service Reference (implicit and explicit)


Service Reference

•  glassfish-services.xml – Explicit Service References definition

• Target template • Characteristics matching

• Will be replaced with Java EE standard XML


Service Reference Example <glassfish-services> <service-description name="MyDB”>  <characteristics> <characteristic name="service-type" value="Database"/> <characteristic name="service-vendor" value="Oracle"/> <characteristic name="service-product-name" value="Oracle"/> <characteristic name="service-version" value="11g"/> <characteristic name="os-name" value="Linux"/> </characteristics> <configurations>  <configuration name="init.sql" value="tbl-init.sql"/> </configurations> </service-description> </glassfish-services>


PaaS Application Deployment

Service Reference Extraction

Message Queue Service

Configure Application with procured services references

Database Service Java EE Service

Provision and Initialize

Deployment Pipeline


Provision and Initialize Deploy application

LoadBalancer



Redeployment

• Reuse existing services/cluster of Java EE instances •  Adapt shape to new application requirements • Data migration

– Database schema upgrade – Security

• Rolling upgrades still apply •  Lower stack software update (O.S. / Database)


Undeployment

• Rule of thumb : undo what was done during deployment •  Application scoped services stopped and released •  Shared services released • Cluster of Java EE instances deleted •  Virtual Machines released •  Virtual Disks deleted


Agenda



How to Determine when to Autoscale

• Monitor Resources used by the system – CPU

• Used and idle CPU times – Memory

• Process memory: Allocated, Resident etc. • JVM memory: Used, Committed and Max memory

– Disk • Reads, Writes per seconds • Bytes read, written etc.


How to Determine when to Autoscale

–  Java Objects • HTTP Sessions created / destroyed per second • Number of HTTP requests that arrived • Connection Pools: Number of connections acquired / released etc. • Database Queries executed • Transaction status: Number of commits / rollbacks

– Application Specific Metrics

• Response time of a specific URL

– Many, many, many other metrics…


Metric Sources •  JMX

–  Example MXBean to gather memory statistics –  Operating environment may have JMX MBeans that provide some

metrics

• Monitoring tools – Virtual Machine Manager can provide cpu / memory usage metric

• Native tools –  Top, lsof, iostat etc.


Want to try ?

•  Source code and builds –  http://glassfish.java.net/

•  The aquarium –  http://blogs.oracle.com/theaquarium/

•  The specs –  http://javaee-spec.java.net/


Latin America 2011 December 6–8, 2011

Tokyo 2012 April 4–6, 2012

Technology

GlassFish in the Virtual World