© 2004 Hewlett-Packard Development Company, L.P.The information contained herein is subject to change without notice

Service Oriented Architectures (SOA) Monitoring and Management with HP OpenView Operations

HP Universe 2005

Stefan BergsteinSoftware Architect, HP

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Agenda• SOA concepts• SOAP and Web Services• Monitoring web services with OVIS• SOA Manager• Putting all together

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Monitor SOA applications using HP OpenView Operations

Operations Management

ServiceNavigator

ServiceDesk

SOA

?

SOA Concepts

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What is SOA?SOA – Service Oriented Architecture

SOA is an architectural approach, centered around the

concept of services…

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BusinessAndIT

synchronized to capitalize on change

What is SOA?How does HP define Service Oriented Architecture?

SOA is an architectural approach, centered around the concept of services, to designing, building and managing distributed computing infrastructure that an enterprise requires to execute its business strategy and achieve its business goals. This approach promotes the use of loosely-coupled, reusable services, with standards-based well-defined service specifications that enable them to be discovered and consumed by independent service consumers.

SOA permits organizations to link business and IT services together, and establish stability, predictability, security, and manageability in a highly distributed and dynamically changing business environment.

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SOA - An Analogy

Internet:• Standards – html & http so anyone

with a browser can access information

• Integration – hyperlink allow for ease of integration

• Metadata – the Internet is metadata driven. Google creates indexes, plus provides other services like page ranking, identifying related products, etc. You get more than just a list of sites.

SOA:• Standards - WSO, WSDM, UDDI.

These allow an SOA to expose information about services

• Integration – SOAs make integration of components very easy, fast and cheap.

• Metadata – If you stopped with just standards and linkages, the internet would be nearly useless. Google makes the Internet valuable. Likewise, metadata turns simple Web services into SOA.

Let’s take a look at

The Internet, and SOA share 3 critical principles

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Web Services make implementing SOA easier, but they aren’t the same

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Composite Applications

BusinessLogic

Legacy ERP CRM Finance

BusinessLogic

BusinessLogic

BusinessLogic

Business Services

Service InfrastructureWhat does an SOA look like?

Business Process Layer

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Characteristics of a Service• Meaningful and articulating

− Meaningful levels of granularity− Flexibility across functional and technology layer− Makes use of standards and promotes reuse

• Contract based− Consumer/producer are aware of their obligations

• Self contained and modular− Coarse grained cohesive, composable, atomic

• Loosely coupled− Interfaces independent of implementation− Should not contain technology assumptions

• Locatable− Distributed using registry and metadata/semantics− Can be discovered− Not simply point-to-point

Simplification

Standardization

Modularity

Integration

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SOA Technology and Web Services

• One of the key reasons for the today’s focus upon SOA is the emergence of supporting technologies.

• SOA is an architectural approach, centered around the concept of services

• SOA ≠ Web Services−SOA can exist without Web Services−Web Services can be utilized without an SOA−Using web services can significantly enhance our ability

to implement SOA

A common source of confusion

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Why Web Services for SOA?Web Services:• Are (mostly) standardized• Promote loose-coupling• Are platform independent and vendor independent• Provide integration at service level• Include service description mechanisms• Include service catalogue mechanisms

SOAP and Web Services

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Web Service model

Service Registry

Service Consumer Service Provider

Find Publish

Bind

ServiceClient

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SOAPWhat is it?

• Lightweight XML-based messaging format• Key components of the specification−Messaging specification−Set of encoding rules−Convention for invocation

• Benefits of using SOAP−Vendor, platform, and language independence−HTTP is firewall friendly

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SOAPHow does it look like?

• A unit of communication− Envelope −Header−Body

• Error handling through SOAP faults• Extensibility through custom headers• Mechanism for representing abstract data• Invocation styles− RPC−Document

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SOAP Example

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What is WSDL

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WSDL Example

Monitoring web services with OVIS

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OVIS Probe typesBasic Services:

• DHCP (Dynamic Host Config.)

• DNS (Name Resolution)

• ICMP (Network Response Time)

• LDAP (Lightw. Directory Access)

• NTP (Network Time)

• ODBC (Open Database C…)

• TCP (user-defined port)

• TCP-Performance - NEW

• UDP-Performance - NEW

• WMI – Basic System Metrics - NEW

Email:

• IMAP4 (Internet Message Access)

• Mail Roundtrip

• MS Exchange (MAPI)

• POP3 (Post Office Protocol)

• SMTP (Simple Mail Transfer)

Web:

• FTP (File Transfer)

• HTTP (Web Servers)

• HTTPS (Secure Web Servers)

• HTTP_TRANS (Web Transactions)

• NNTP (News Service)

• SOAP (Simple Object Access Protocol)

• STREAM_MEDIA (Real or Win)

• TFTP (Trivial File Transfer) - NEW

Remote Access & Other:• DIALUP (Dial Up)

• Radius (Authentication)

• SAP

• SMS (Short Messaging Service)

• WAP (Wireless Data)

Extensibility Tools• Script Probe

• Custom Probe SDK (C/C++)

• Probe Builder (available for download)

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Monitoring WS with OVISStock Quote example

SOAPprobe

StockApp

WS

Server

OVIS HP OVOperations

SOAPRequest

SOAPResponse

WSDLgetQuote

metrics

messages

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Monitoring WS with OVISStock Quote example – SOAP and WSDL

SOAP Request:

SOAP Response:

Stock sample WSDL:

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OVIS SOAP Probe configuration

SOAP Request

SOAP Action

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Tip: Capture SOAP request• How to create a SOAP request?− Install TCPMonitor (Apache)− Redirect SOAP call trough TCPMonitor−Capture SOAP messages− Extract SOAP request−Use in OVIS “Post data”

SOA Manager

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SOA Manager

WSM Features

Interposed Management Performance and availability

monitoring Security Auditing Content monitoring

Automation Discovery and Deployment

Support for SOAP over HTTP XML over HTTP

SLA report Customizations Brokered services Advanced management (handlers) Message routing Authorization & Policy/Rules

and beyond

View IT environment in the context of business metrics

Manage IT according to business priorities

Link management layers:business, configuration, and resource levels

Publish management models to UDDI Manage change effectively Embrace heterogeneity

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SOA Manager Components• Network Services

Server(Business Service Explorer console)

• WSM Broker(Broker Configurator console)

• OVO Integration Tool• WSM J2EE Agent

(optional, WebLogic Server)

• WSM .NET Agent (optional, .NET Framework)

• Identity Management(optional, Select Access)

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Understanding Brokers and Agents

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SOA Manager / OVO integration• Frontend subagent

− Responsible for communicating with SOA Manager

− Gathers management data

• Backend Service− Receives management

data from frontend subagent

− Updates OVO service model

− Submits OVO messages

Putting all together

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Configuration

UnderpinningOperations Management

Business

ITSM Service Model

CheckingAccount

CustomerVaultCredit Risk

Credit RiskWS

App Srv OSHP-UX 11.23

CustomerVault WS

ServerManagement

UNIX ServerManagement

Web ServiceManagement

HardwareMaintenance

HP Server

Manages

Uses

Supports

Manages

Uses

Uses Parent-Child

Underpinned by

Uses

CheckingAccount WS

Uses

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Business service modelPresentation in Service Navigator

• Shows the business services

• Maps business services to web services

• Links the infrastructure to web services

• Enables impact and root cause analyses

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SummarySOA Monitoring

OVISSOAPprobe

WS

Checkingaccount

CreditRisk

CustomerVault

WSMbroker

WSMagent

WSMagent

SOAmanager

OVISServer

OVOServer

MessagesService model

MessagesService model

WS WS

Probes: synthetic end to end response –characterize service availability “Am I Ready?”

Client monitoring:real end to end –characterize service quality “How Am I Doing?”

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Q&A