Welcome!

Weblogic Authors: Yeshim Deniz, Elizabeth White, Michael Meiner, Michael Bushong, Avi Rosenthal

Related Topics: Weblogic

Weblogic: Article

The Promise of Utility Computing Today

Deploying a Shared Weblogic Infrastructure for J2EE Application Hosting

Business managers are demanding better, faster, and cheaper access to IT resources and environments. At the same time, IT budgets and resources are being cut, there is a proliferation of servers running at low utilization.

These competing objectives play nicely into consolidation and virtualization of computing resources. A strong case can be made for deploying a virtualized and shared environment designed for hosting multiple BEA WebLogic applications with a high level of isolation between each application.

The Current Problem

Today IT organizations face the challenge of consistently and strategically aligning IT investments with evolving technology and changing business objectives. At the same time, IT must optimize assets, reduce complexity, be cost effective, comply with standards, and improve the stability and flexibility of the environment. Within HP the J2EE application server platform, specifically BEA WebLogic Server, was identified as an area where applying concepts and solutions from utility computing could bring significant benefits to IT groups and the business units served.

In HP's case, there wasn't a federated approach for managing J2EE environments across business units, creating challenges in assuring a cost effective platform. For example, HP internal business units invested in additional hardware, software, and support resources to host their application runtime environments on a per application basis. This led to three significant problems:

  1. Redundant infrastructure and support resources across the organization, leading to excess spending and often low resource utilization of each infrastructure
  2. Increased time-to-market for solutions because of the time and budget required to obtain hardware, software, and resources
  3. Lack of standardization, repeatable processes, and solutions across application teams.
These multidimensional problems impact application teams by reducing their agility and increasing their expense when delivering solutions. Meeting these challenges allows IT to manage the environment better, faster, cheaper, simpler, and smarter.

Our Solution

In early 2003 a team was built to focus on this problem and began a strategic program to develop a Shared Application Server Utility (SASU) infrastructure. This team was chartered to create an adaptable, flexible, and fully monitored environment for hosting J2EE applications on shared virtualized hardware. The goal was to providie a J2EE application hosting service that business partners can use on-demand and eventually be charged back based on actual environment usage. SASU provides the infrastructure and the application provider provides the application and team resources for deployment and support. The infrastructure now runs in production with several applications and has a funnel with many new pending requests.

To deliver the infrastructure, SASU integrates a set of complex emerging technologies to deliver a comprehensive solution. Its servers are deployed in a data center that provides Web server farms, load balancing appliances, external access capabilities, Storage Array Network, and shared database farms. Figure 1 shows the overall SASU infrastructure deployed on a physical machine. The infrastructure can be described in terms of layers.

J2EE Environment Layer
BEA WebLogic Server 8.1 SP2 provides the J2EE platform, including advanced capabilities such as isolated application environment support, administration services, clustering across physical machines, and session state management.

SASU has deployed dedicated domains per application, including dedicated managed servers (often deployed to multiple machines) and a dedicated admin server. This will provide JVM isolation and the ability to deploy, and start and stop applications independently.

Monitoring and Reporting Layer
SASU has deployed monitoring and reporting components based on the HP OpenView product suite. This provides application alerts, historical usage reporting per application, service-level objective violations, and the ability to deploy application specific monitoring requirements through ARM or the inclusion of upcoming components to provide URL availability and transactional level information. The information is captured into a central reporting database that allows for the creation of reports, or for additional automation around responding to specific events occurring in the system.

Management and Control Layer
This is a critical component for providing isolation of shared CPU resources between applications. The key technology is an HP-UX software product - Work Load Manager (WLM).

WLM provides a configuration file where CPU Min/Max resources can be allocated and guaranteed for a specific application process through the definition of a WLM workgroup with an associated service-level objective (SLO). The granularity for the allocation of CPU can be up to 1% of 1 CPU for a workgroup. WLM periodically monitors applications performance characteristics versus the configured service-level objectives of the configured applications. When additional CPU is required to meet increasing load, WLM automatically allocates the additional CPU to keep the application within the min/max range up to its max value, at which time the CPU allocation is capped.

A key benefit of this technology is that system utilization can be pushed to higher levels as applications can get access to the reserve CPUs when required but share the excess capacity with others when not utilized. In addition, errant applications will be capped at their configured max configuration, which will stop an application from overtaking all of the CPU reserve and impacting other applications.

Physical Disk Layer
SASU deploys application disk space into a Storage Area Network with dedicated logical volumes per application that are sized according to an application's needs up front. This allows a specific application's disk space to be completely isolated from others on the system. All application-specific files and logs will reside in this space.

Processes and Automation
SASU provides a consistent and repeatable development and promotion to production methodology, including standard shared functional test, integration test, and production infrastructure and maintenance. This enables application development teams to focus on their application functionality without dealing with infrastructure configuration and maintenance, enabling simplified and accelerated application deployment, and testing and repeatable environment creation steps. An essential component for delivering environments quickly and in a repeatable manner is the automation of the WebLogic domain creation.

Automating WebLogic Domain Creation and Configuration

Life Before Automation
Imagine you're hosting multiple applications in a shared WebLogic environment. Two to three new applications must be deployed each week, each requiring its own dedicated domain with users, passwords, port numbers, JVM arguments, classpath configuration, and a host of other unique server properties. Creating these by hand, using the Domain Configuration Wizard, administration console, and other tools, can easily become a full-time job.

Automation Done Thus Far
Wanting to get out of the "hands-on administrator" business, we embraced "wlshell" to assist our automation effort. We began by creating a flat configuration file. The file contains wlshell environment variables for all the static and dynamic configuration variables which make up the common MBean properties needing configuration in a new domain. This configuration file is used as input to a domain configuration wizard script template, which creates a basic entry-level domain. After the basic domain is created, we start the admin server and run generic wlshell scripts that set all the properties defined in the domain environment file. This automation has exponentially shortened the amount of time and effort necessary to create an application domain.

What Lies Ahead
Investigation is now under way automating other areas, including uploading and tracking application versions, as well as deployment. Going forward, we must be careful not to "over-automate" in order to ensure that the interface and functionality remain flexible. The key is in striking the right balance between the GUI approach, and automation.

Another key automation candidate is the "promotion" of applications between environments (for example, taking an application from test to production). BEA is working on features such as deployment plans in future releases, which should ease configuration issues when promoting applications. Any automation work must account for and take full advantage of such features.

Automation not only increases the speed and efficiency of operations, but also provides a highly "repeatable" process that is much less error prone than manual processes.

Things to Consider

Embracing a shift from traditional infrastructure to utility computing requires changes across three dimensions: people, processes, and technology. It is critical to define a solution that takes all three dimentions into account. A strong technical solution and architecture will not be successful without a buy-in from application teams and sponsors for the changes in process to be part of a shared environment. With a solid plan and organization structure both application teams and IT sponsors should benefit from reduced costs and faster time-to-market offered from a shared infrastructure.

More Stories By Tim Jacobson

Tim Jacobson is the chief architect for the Shared Application Server Utility at HP. He is responsible for the strategic architectural direction of the program and integration of new technologies and applications into the infrastructure.

More Stories By Trace Lowe

Trace Lowe is the J2EE Administration Technical Lead for SASU at HP

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


IoT & Smart Cities Stories
The deluge of IoT sensor data collected from connected devices and the powerful AI required to make that data actionable are giving rise to a hybrid ecosystem in which cloud, on-prem and edge processes become interweaved. Attendees will learn how emerging composable infrastructure solutions deliver the adaptive architecture needed to manage this new data reality. Machine learning algorithms can better anticipate data storms and automate resources to support surges, including fully scalable GPU-c...
Machine learning has taken residence at our cities' cores and now we can finally have "smart cities." Cities are a collection of buildings made to provide the structure and safety necessary for people to function, create and survive. Buildings are a pool of ever-changing performance data from large automated systems such as heating and cooling to the people that live and work within them. Through machine learning, buildings can optimize performance, reduce costs, and improve occupant comfort by ...
The explosion of new web/cloud/IoT-based applications and the data they generate are transforming our world right before our eyes. In this rush to adopt these new technologies, organizations are often ignoring fundamental questions concerning who owns the data and failing to ask for permission to conduct invasive surveillance of their customers. Organizations that are not transparent about how their systems gather data telemetry without offering shared data ownership risk product rejection, regu...
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...
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.
Digital Transformation: Preparing Cloud & IoT Security for the Age of Artificial Intelligence. As automation and artificial intelligence (AI) power solution development and delivery, many businesses need to build backend cloud capabilities. Well-poised organizations, marketing smart devices with AI and BlockChain capabilities prepare to refine compliance and regulatory capabilities in 2018. Volumes of health, financial, technical and privacy data, along with tightening compliance requirements by...
Predicting the future has never been more challenging - not because of the lack of data but because of the flood of ungoverned and risk laden information. Microsoft states that 2.5 exabytes of data are created every day. Expectations and reliance on data are being pushed to the limits, as demands around hybrid options continue to grow.
Digital Transformation and Disruption, Amazon Style - What You Can Learn. Chris Kocher is a co-founder of Grey Heron, a management and strategic marketing consulting firm. He has 25+ years in both strategic and hands-on operating experience helping executives and investors build revenues and shareholder value. He has consulted with over 130 companies on innovating with new business models, product strategies and monetization. Chris has held management positions at HP and Symantec in addition to ...
Enterprises have taken advantage of IoT to achieve important revenue and cost advantages. What is less apparent is how incumbent enterprises operating at scale have, following success with IoT, built analytic, operations management and software development capabilities - ranging from autonomous vehicles to manageable robotics installations. They have embraced these capabilities as if they were Silicon Valley startups.
As IoT continues to increase momentum, so does the associated risk. Secure Device Lifecycle Management (DLM) is ranked as one of the most important technology areas of IoT. Driving this trend is the realization that secure support for IoT devices provides companies the ability to deliver high-quality, reliable, secure offerings faster, create new revenue streams, and reduce support costs, all while building a competitive advantage in their markets. In this session, we will use customer use cases...