|By Lori MacVittie||
|May 7, 2010 06:50 AM EDT||
Although “rapid elasticity” is part of NIST’s definition of cloud computing, it may be interesting to note that many cloud computing environments don’t include this capability at all – or charge you extra for it. Many providers offer the means by which you can configure a load balancing service and manually add or remove instances, but there may not be a way to automate that process. If it’s manual, it’s certain “rapid” in the sense that’s it’s probably faster than you can do it (because you’d have to acquire hardware and deploy the application, as opposed to simply hitting a button and “cloning” the environment ‘out there’) but it’s not necessarily as fast as it could be (because it’s manual) nor is it automated. There’s a number of reasons for that – but we’ll get to that later. First, let’s look at how auto-scaling is supposed to work, at least theoretically.
1. Some external entity that is monitoring capacity for “Application A” triggers an event that indicates a new instance is required to maintain availability. This external entity could be an APM solution, the cloud management console, or a custom developed application. How it determines capacity limitations is variable and might be based solely on VM status (via VMware APIs), data received from the load balancer, or a combination thereof.
2. A new instance is launched. This is accomplished via the cloud management console or an external API as part of a larger workflow/orchestration.
3. The external entity grabs the IP address of the newly launched instance and instructs the load balancer to add it to the pool for resources for “Application A.” This is accomplished via the standards-based API which presents the configuration and management control plane of the load balancer to external consumers as services.
4. The load balancer adds the new application instance to the appropriate pool and as soon as it has confirmation that the instance is available and responding to requests, begins to direct traffic to the instance.
This process is easily reversed upon termination of an instance. Note: there are other infrastructure components that are involved in this process that must also be notified on launch and decommission, but for this discussion we’re just looking at the load balancing piece as it’s critical to the concept of auto-scaling.
The important thing to note here is that the process for adding – and subsequently using – the new application instance to the load balancer should be automatic. Once the instance is launched, all that remains is to inform the load balancer that a new instance is available. The load balancer should take care of the rest, and it should do so transparently. That means no interruption of service, no reboot, no reload the configuration, nothing. Similarly the termination and removal of the application instance from the pool of resources should be as seamless and non-disruptive. It does not matter whether the load balancing solution is hardware or a VNA (Virtual Network Appliance) as long as it has an API through which available resources can be added and removed on-demand.
This process is relatively straightforward and can even be accomplished without the “external entity” by directly integrating the application with the load balancing service. By hooking the appropriate setup and tear-down routines in the application, the load balancer can be automatically instructed to perform the appropriate actions whenever an instance of that application is launched or terminated.
1. Application is initialized and instructs load balancer to add it to the appropriate resource pool.
2. Load balancer adds the application instance to the right pool of resources and begins directing traffic to it as configured.
3. Application is terminating, instructs load balancer to remove it from the available resource pool.
4. Load balancer removes the application instance from pool of resources.
This requires tighter coupling of the load balancer with the application, however, which may be less than ideal unless you are very tied to your load balancing solution. The advantage of this solution is that regardless of whether the application is “physical” or “virtual”, the same process occurs, which lets you mix and match and be a lot more flexible in your architecture.
It’s not, if the load balancer has an API. Herein lies the problem: building out an automated, dynamic infrastructure requires the ability to communicate, to collaborate, to integrate network and application network infrastructure with the data center management system. That means some sort of API is required. Oh, you could do it with a little SSH and a local script, but that’s not nearly as efficient or flexible as using an API that’s designed to be leveraged for integration and automation in the first place.
While just about every hardware load balancer (and their virtualized equivalents) is enabled with a standards-based control plane, most web-server-turned-rudimentary-load-balancers are not enabled with an API that allows this level of integration. That means hacking the system with scripts that inject or remove configurations, forcing reloading of the configuration (or worse, stopping and starting the system) and most likely interrupting service. Not only does it mean hacking the system but the scripts must somehow pull from customer-specific meta-data information in order to properly configure the load balancing solution.
So in order to achieve this in a way that maintains availability and is easy to use and essentially a multi-tenant solution needs the services of an API. When it comes to integration there are few options and the most flexible method is to use a standards-based API to manage a solution that supports the notion of multi-tenant configuration natively. The problem is, of course, that most of the API-enabled (and therefore easy to integrate and automate) load balancers cost money. It requires an investment, up front, and many folks just aren’t willing to do that. Except they are doing that; they’re just trading capital expenses for longer-term development of scripts and research that approximate (but never quite reach the reliability) of an API that’s been specifically developed, tested, and deployed for the purpose of integrating with external management systems and scripts. What’s worse is that eventually most of these solutions developed on sweat and scripts will end up turning to a more sophisticated, proven API-based solution anyway because of the inherent challenges associated with scalability of the solution itself. That results in a financially inefficient way to go about building a dynamic infrastructure that supports rapid, elastic scalability.
So many organizations faced with the choice of investing in a more robust, flexible solution when they’ve already sunk a lot of time, effort, and money into their existing “free” solution, simply continue to hack and paste and shove a square peg into a round hole, which means auto-scaling never works quite as expected and advanced features come at a snail’s pace because of the difficulty in scripting and integration.
It doesn’t have to be so hard, but you do have to view load balancing for what it is: a key component of the cloud computing strategy, and give it the focus it deserves, even if that means it’ll cost you more up front because in the end it’ll cost you far less than the alternative.
SYS-CON Events announced today the How to Create Angular 2 Clients for the Cloud Workshop, being held June 7, 2016, in conjunction with 18th Cloud Expo | @ThingsExpo, at the Javits Center in New York, NY. Angular 2 is a complete re-write of the popular framework AngularJS. Programming in Angular 2 is greatly simplified. Now it’s a component-based well-performing framework. The immersive one-day workshop led by Yakov Fain, a Java Champion and a co-founder of the IT consultancy Farata Systems and...
May. 30, 2016 12:00 PM EDT Reads: 4,106
SYS-CON Events announced today that Super Micro Computer, Inc., a global leader in Embedded and IoT solutions, will exhibit at 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. Supermicro (NASDAQ: SMCI), the leading innovator in high-performance, high-efficiency server technology, is a premier provider of advanced server Building Block Solutions® for Data Center, Cloud Computing, Enterprise IT, Hadoop/Big Data, HPC and ...
May. 30, 2016 12:00 PM EDT Reads: 788
In his session at 18th Cloud Expo, Andrew Cole, Director of Solutions Engineering at Peak 10, will discuss how the newest technology advances are reducing the cost and complexity of traditional business continuity and disaster recovery solutions. Attendees will: Learn why having a full disaster recovery strategy is more important now than ever before Explore the key drivers of a successful disaster recovery solution Achieve measurable operational and business value from a disaster recovery ...
May. 30, 2016 12:00 PM EDT Reads: 1,484
SYS-CON Events announced today that Hanu Software will exhibit at 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. Leveraging best-in-class people, processes, and technologies, Hanu provides high-quality, high-value software development and business process outsourcing services to independent software vendors (ISVs) and enterprises.
May. 30, 2016 11:30 AM EDT Reads: 1,464
How will your company move to the cloud while ensuring a solid security posture? Organizations from small to large are increasingly adopting cloud solutions to deliver essential business services at a much lower cost. According to cyber security experts, the frequency and severity of cyber-attacks are on the rise, causing alarm to businesses and customers across a variety of industries. To defend against exploits like these, a company must adopt a comprehensive security defense strategy that is ...
May. 30, 2016 11:30 AM EDT Reads: 716
What a difference a year makes. Organizations aren’t just talking about IoT possibilities, it is now baked into their core business strategy. With IoT, billions of devices generating data from different companies on different networks around the globe need to interact. From efficiency to better customer insights to completely new business models, IoT will turn traditional business models upside down. In the new customer-centric age, the key to success is delivering critical services and apps wit...
May. 30, 2016 11:15 AM EDT Reads: 1,335
Join us at Cloud Expo | @ThingsExpo 2016 – June 7-9 at the Javits Center in New York City and November 1-3 at the Santa Clara Convention Center in Santa Clara, CA – and deliver your unique message in a way that is striking and unforgettable by taking advantage of SYS-CON's unmatched high-impact, result-driven event / media packages.
May. 30, 2016 11:00 AM EDT Reads: 2,570
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, will provide an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life ...
May. 30, 2016 10:45 AM EDT Reads: 2,056
The initial debate is over: Any enterprise with a serious commitment to IT is migrating to the cloud. But things are not so simple. There is a complex mix of on-premises, colocated, and public-cloud deployments. In this power panel at 18th Cloud Expo, moderated by Conference Chair Roger Strukhoff, panelists will look at the present state of cloud from the C-level view, and how great companies and rock star executives can use cloud computing to meet their most ambitious and disruptive business ...
May. 30, 2016 10:00 AM EDT Reads: 2,286
SYS-CON Events announced today that MobiDev will exhibit at 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. MobiDev is a software company that develops and delivers turn-key mobile apps, websites, web services, and complex software systems for startups and enterprises. Since 2009 it has grown from a small group of passionate engineers and business managers to a full-scale mobile software company with over 200 develope...
May. 30, 2016 09:15 AM EDT Reads: 2,807
SYS-CON Events announced today that BMC Software has been named "Siver Sponsor" of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2015 at the Javits Center in New York, New York. BMC is a global leader in innovative software solutions that help businesses transform into digital enterprises for the ultimate competitive advantage. BMC Digital Enterprise Management is a set of innovative IT solutions designed to make digital business fast, seamless, and optimized from mainframe to mo...
May. 30, 2016 09:15 AM EDT Reads: 2,368
As cloud and storage projections continue to rise, the number of organizations moving to the cloud is escalating and it is clear cloud storage is here to stay. However, is it secure? Data is the lifeblood for government entities, countries, cloud service providers and enterprises alike and losing or exposing that data can have disastrous results. There are new concepts for data storage on the horizon that will deliver secure solutions for storing and moving sensitive data around the world. ...
May. 30, 2016 09:00 AM EDT Reads: 1,428
SoftLayer operates a global cloud infrastructure platform built for Internet scale. With a global footprint of data centers and network points of presence, SoftLayer provides infrastructure as a service to leading-edge customers ranging from Web startups to global enterprises. SoftLayer's modular architecture, full-featured API, and sophisticated automation provide unparalleled performance and control. Its flexible unified platform seamlessly spans physical and virtual devices linked via a world...
May. 30, 2016 08:00 AM EDT Reads: 2,387
SYS-CON Events announced today that ContentMX, the marketing technology and services company with a singular mission to increase engagement and drive more conversations for enterprise, channel and SMB technology marketers, has been named “Sponsor & Exhibitor Lounge Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York City, New York. “CloudExpo is a great opportunity to start a conversation with new prospects, but what happens after the...
May. 30, 2016 07:15 AM EDT Reads: 1,403
Companies can harness IoT and predictive analytics to sustain business continuity; predict and manage site performance during emergencies; minimize expensive reactive maintenance; and forecast equipment and maintenance budgets and expenditures. Providing cost-effective, uninterrupted service is challenging, particularly for organizations with geographically dispersed operations.
May. 30, 2016 07:00 AM EDT Reads: 2,251
The IoTs will challenge the status quo of how IT and development organizations operate. Or will it? Certainly the fog layer of IoT requires special insights about data ontology, security and transactional integrity. But the developmental challenges are the same: People, Process and Platform. In his session at @ThingsExpo, Craig Sproule, CEO of Metavine, will demonstrate how to move beyond today's coding paradigm and share the must-have mindsets for removing complexity from the development proc...
May. 30, 2016 06:00 AM EDT Reads: 2,012
SYS-CON Events announced today TechTarget 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, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. TechTarget is the Web’s leading destination for serious technology buyers researching and making enterprise technology decisions. Its extensive global networ...
May. 30, 2016 05:30 AM EDT Reads: 3,305
SYS-CON Events announced today that Commvault, a global leader in enterprise data protection and information management, has been named “Bronze 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, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Commvault is a leading provider of data protection and information management...
May. 30, 2016 04:45 AM EDT Reads: 3,325
Many banks and financial institutions are experimenting with containers in development environments, but when will they move into production? Containers are seen as the key to achieving the ultimate in information technology flexibility and agility. Containers work on both public and private clouds, and make it easy to build and deploy applications. The challenge for regulated industries is the cost and complexity of container security compliance. VM security compliance is already challenging, ...
May. 30, 2016 03:45 AM EDT Reads: 1,395
The essence of data analysis involves setting up data pipelines that consist of several operations that are chained together – starting from data collection, data quality checks, data integration, data analysis and data visualization (including the setting up of interaction paths in that visualization). In our opinion, the challenges stem from the technology diversity at each stage of the data pipeline as well as the lack of process around the analysis.
May. 30, 2016 03:15 AM EDT Reads: 1,543