Welcome!

Recurring Revenue Authors: Yeshim Deniz, Elizabeth White, Xenia von Wedel, Liz McMillan, Carmen Gonzalez

Related Topics: Containers Expo Blog, Microservices Expo, Recurring Revenue, Artificial Intelligence, Log Management, Server Monitoring, @CloudExpo

Containers Expo Blog: Blog Feed Post

Governance: Service Catalogs and the Cloud

Can the inherent abstraction of virtualization succeed where SOA did not?

My first read through a post on the Cloud Front Office led me to scoff disdainfully at the re-emergence of a concept central to a successful SOA implementation: the service catalog. Oh, we called it "registry" and then "registry/repository (reg/rep)" and finally "governance" but the concept behind it was exactly the same. Take a gander at the description of a cloud service catalog apparently growing out of discussions that began at Structure 09:

Last week I attended Structure 09, one of the better cloud computing conferences. Everyone I could hear the echo of the need for a service catalog; often it was implicit.

For example, everyone spoke about the need for standardization and multi-tenancy, about the need to abstract computing resources from the application to enable moving workloads as needed.  Which in my mind requires you to a) know what the workload is, b) know the SLA of that workload, c) have well defined underpinning technical services that compose that application service, and therefore d) Have a SERVICE CATALOG to track all of that!

Now, interestingly enough SOA governance utilized standards-based metadata like WSDL and WSIL to describe services. These descriptions included the endpoint (the physical location) of the service as well as the operations available and how to invoke them. In a full SOA implementation, the registry was at the heart of the architecture; if you wanted to invoke a service you queried the registry (usually via UDDI), retrieved the description (WSDL, WSIL), and then gathered the information necessary to invoke the service. This abstraction allowed services, ostensibly, to move and change over time without, allegedly, negatively impacting the client (consumers).

So while I was ready to excoriate this idea at first, a quiet hour trying to get a restless toddler back to sleep in the dark o'night led me to reconsider what appears to have been a rather hasty judgment. Might not this notion of a service catalog be more apposite than I first believed?

Absolutely.

 


ABSTRACTION AND MANAGEMENT (GOVERNANCE)


Let us assume that we can, in some standard way, describe a virtual machine such as is often the foundational building block of an on-demand data center. Perhaps we could even assume that OVF might suffice for this purpose. Imagine then, if you will, that these descriptors are stored in a central repository. A repository that is used not necessarily for developers but for administrators attempting to automate the provisioning smiley-policeman and management processes that are the basis for so many benefits of on-demand computing. If these descriptors, this metadata, contains the appropriate management endpoints rather than just the endpoints of the actual service (application), it would then be possible to easily automate the launch and tear-down of such virtual machines.

 

Furthermore, the inherent chaos that could be caused by virtual machine movement within an on-demand infrastructure could be soothed. When a virtual machine (service) was launched, the descriptor could be updated to include its new physical location. In fact, assuming such services were launched in multiple locations (dare I suggest even across multiple clouds, as might be the case with intercloud) the descriptor could be updated to include all locations, perhaps even prioritized.

One of the interesting things virtualization brings to the table that SOA did not is the ability to abstract management of services. While WSDL abstracted a service and its operations away from the underlying implementation, that underlying implementation was still very much relevant in that managing the service required an understanding of the platform (.NET, Java EE, etc...) on which the service was deployed. You could not use WSDL or WSIL, for example, to actually manage the service - that was the raison d'être for SOA management solutions.

But virtualization solutions - likely because of many cloud implementations heavy reliance - provide management endpoints (APIs) through which virtual machine instances can be managed. VMs can be started and stopped and monitored through these endpoints (APIs) and the APIs are almost universally web-based, meaning the endpoint is the equivalent of a URI. That fits nicely into a service catalog and could easily be automated by any number of existing solutions (BPM systems come to mind immediately) or incorporated into custom solutions with relative ease.

 


IS THIS THE BEGINNING OF A CNS (Cloud Naming Service)?


When you start looking at the usefulness of a service catalog it immediately appears that this is more than just an internal governance solution. By stepping back and looking at the bigger picture and the potential implementation of cloudbursting and intercloud solutions in the future, you begin to suspect that perhaps the service catalog and DNS need to merge, somehow. Perhaps this is where global load balancing can really shine. On the innertubes today if we want to find a site we use DNS to look up the IP address. In a cloudbursting or intercloud scenario we can't be sure exactly where a service may be residing. Using a system similar to DNS we might (a) lookup the service, (b) retrieve its current location and management endpoints, and (c) manage/invoke at will.

 

Perhaps this is an extension to DNS? Perhaps it's something completely different. While many of the core concepts of cloud computing and virtualization are not new at all and, in fact, appear to be heavily borrowed from programmatic models of the past (distributed systems, SOA, object-oriented programming) some of the solutions that will be created to help manage cloud and virtualization will be new, because we have a completely new set of problems and issues to address caused by the convergence of a variety of programmatic and architectural models.

The use of SOA governance solutions never truly took the world by storm, and that may be in part that the metadata it carried wasn't "meta" enough given the level of abstraction used by SOA. Virtualization and cloud computing take that abstraction far enough to be useful both in invocation and management. SOA, too, was hampered by the fact that automation of processes - while nice - was not a necessary piece of the value equation. For cloud computing (on-demand) automation is one of the key variables in the benefit equation, making abstraction of management a necessity.

The more I think about this concept, the more I am liking where it may be going. Service catalogs may, in fact, be one of the "movers" of cloud in the enterprise, as it would offer a firm foundation on which automation and management solutions could be more easily built and deployed.

 

Follow me on Twitter View Lori's profile on SlideShare friendfeedicon_facebook AddThis Feed Button Bookmark and Share

Related blogs & articles:

Read the original blog entry...

More Stories By Lori MacVittie

Lori MacVittie is responsible for education and evangelism of application services available across F5’s entire product suite. Her role includes authorship of technical materials and participation in a number of community-based forums and industry standards organizations, among other efforts. MacVittie has extensive programming experience as an application architect, as well as network and systems development and administration expertise. Prior to joining F5, MacVittie was an award-winning Senior Technology Editor at Network Computing Magazine, where she conducted product research and evaluation focused on integration with application and network architectures, and authored articles on a variety of topics aimed at IT professionals. Her most recent area of focus included SOA-related products and architectures. She holds a B.S. in Information and Computing Science from the University of Wisconsin at Green Bay, and an M.S. in Computer Science from Nova Southeastern University.

IoT & Smart Cities Stories
"IBM is really all in on blockchain. We take a look at sort of the history of blockchain ledger technologies. It started out with bitcoin, Ethereum, and IBM evaluated these particular blockchain technologies and found they were anonymous and permissionless and that many companies were looking for permissioned blockchain," stated René Bostic, Technical VP of the IBM Cloud Unit in North America, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventi...
Founded in 2000, Chetu Inc. is a global provider of customized software development solutions and IT staff augmentation services for software technology providers. By providing clients with unparalleled niche technology expertise and industry experience, Chetu has become the premiere long-term, back-end software development partner for start-ups, SMBs, and Fortune 500 companies. Chetu is headquartered in Plantation, Florida, with thirteen offices throughout the U.S. and abroad.
René Bostic is the Technical VP of the IBM Cloud Unit in North America. Enjoying her career with IBM during the modern millennial technological era, she is an expert in cloud computing, DevOps and emerging cloud technologies such as Blockchain. Her strengths and core competencies include a proven record of accomplishments in consensus building at all levels to assess, plan, and implement enterprise and cloud computing solutions. René is a member of the Society of Women Engineers (SWE) and a m...
SYS-CON Events announced today that DatacenterDynamics has been named “Media Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY. DatacenterDynamics is a brand of DCD Group, a global B2B media and publishing company that develops products to help senior professionals in the world's most ICT dependent organizations make risk-based infrastructure and capacity decisions.
A valuable conference experience generates new contacts, sales leads, potential strategic partners and potential investors; helps gather competitive intelligence and even provides inspiration for new products and services. Conference Guru works with conference organizers to pass great deals to great conferences, helping you discover new conferences and increase your return on investment.
DXWorldEXPO LLC announced today that ICOHOLDER named "Media Sponsor" of Miami Blockchain Event by FinTechEXPO. ICOHOLDER gives detailed information and help the community to invest in the trusty projects. Miami Blockchain Event by FinTechEXPO has opened its Call for Papers. The two-day event will present 20 top Blockchain experts. All speaking inquiries which covers the following information can be submitted by email to [email protected] Miami Blockchain Event by FinTechEXPOalso offers sp...
Headquartered in Plainsboro, NJ, Synametrics Technologies has provided IT professionals and computer systems developers since 1997. Based on the success of their initial product offerings (WinSQL and DeltaCopy), the company continues to create and hone innovative products that help its customers get more from their computer applications, databases and infrastructure. To date, over one million users around the world have chosen Synametrics solutions to help power their accelerated business or per...
Poor data quality and analytics drive down business value. In fact, Gartner estimated that the average financial impact of poor data quality on organizations is $9.7 million per year. But bad data is much more than a cost center. By eroding trust in information, analytics and the business decisions based on these, it is a serious impediment to digital transformation.
@DevOpsSummit at Cloud Expo, taking place November 12-13 in New York City, NY, is co-located with 22nd international CloudEXPO | first international DXWorldEXPO and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time t...
When talking IoT we often focus on the devices, the sensors, the hardware itself. The new smart appliances, the new smart or self-driving cars (which are amalgamations of many ‘things'). When we are looking at the world of IoT, we should take a step back, look at the big picture. What value are these devices providing. IoT is not about the devices, its about the data consumed and generated. The devices are tools, mechanisms, conduits. This paper discusses the considerations when dealing with the...