When we talk about the WebSphere Application Server Hypervisor Edition, we often get a lot of questions about whether or not SUSE Linux is the only flavor of the Linux operating system that we support. The short answer to that question is no.
While it is true that we only deliver the WebSphere Application Server Hypervisor Edition with a SUSE Linux operating system, we will support the use of the virtual image packaging with Red Hat Enterprise Linux as the base operating system. The basic process consists of creating a virtual machine disk based off of a suitable Red Hat install, altering the OVF file in WebSphere Application Server Hypervisor Edition to reference this virtual disk instead of the SUSE virtual disk, and then packaging a new OVA file that contains all the same WebSphere virtual disks (profiles, binaries, IBM HTTP Server) but swaps out the Red Hat virtual disk for the SUSE virtual disk. We have done this many times in both the lab and field, and we offer services to users who need help in creating the image.
Customers often ask if there is any difference in using Red Hat versus SUSE Linux. The answer is, of course, yes and no. The answer is yes in that users must bring their own licenses of Red Hat (SUSE Linux licenses are included in the WebSphere Application Server Hypervisor Edition), and users must support and maintain the Red Hat operating system on their own. However, once the image is built, there is absolutely no difference in the use of that image within WebSphere CloudBurst.
Once built, users upload the image into their WebSphere CloudBurst catalog and it is available for use in pattern building just like any other image. I mentioned that users are responsible for updating and maintaining the image, well users can use WebSphere CloudBurst to create these updated images. When patches or updates are ready for the Red Hat operating system, the Extend/Capture facility available for images in WebSphere CloudBurst can be used to create a new custom Red Hat operating system with your desired fixes. This is all done without ever having to worry about actually recreating and repackaging the image again.
I know seeing is believing, so with respect to the "sameness" of using a Red Hat version of the WebSphere Application Server Hypervisor Edition within WebSphere CloudBurst, I've created a short demo you can watch here. As always, let us know what you think and send any questions our way.
The WebSphere Application Server Hypervisor Edition virtual image is made up of four different virtual disks. One of those disks contains pre-created and pre-configured WebSphere Application Server profiles. When the image is activated (either through WebSphere CloudBurst or in a standalone fashion), all of the profiles not being used are deleted leaving only the intended WebSphere profile type.
Since the profiles are pre-created, this implies that certain information must be updated after the image is activated to reflect things that change with each node that is created. Among other things, the cell name, node name, and host name of the WAS profile configuration are usually updated during the image activation process. Nearly every time I talk to WAS administrators about WebSphere CloudBurst and WebSphere Application Server Hypervisor Edition they are intrigued by this particular configuration update and almost always ask "How do you do it?" (Dustin's note: Since the command to rename the cell is not officially documented, I have removed it from this post. I'm sorry, but it is for your own good!)
Most of the time this question pops up because users are attempting to, with a more narrow focus than WAS Hypervisor Edition, freeze-dry certain WAS configurations in their organization. However, no matter how they do that (virtual images, zipped up configuration files, etc.), they too need to update things like the cell, node, and host names when attempting to reuse the configuration. Many have gone down the route of trying to identify all of the different XML files they need to change in order to update this information, but this is untenable and in fact unnecessary.
If you need to update the node or host name, forget manually updating XML files. Instead, use these three wsadmin commands:
The commands can be run from a standalone node or from a deployment manager node. They are pretty straight forward, and if you need more information about them just take a look in the WebSphere Application Server Information Center. I hope this is helpful information, and stay away from those XML files!
It seems like it was announcement day across IBM, and specifically in WebSphere. While the announcements were numerous and touched many different topics, I want to focus on a couple of announcements of particular interest to those of you interested in WebSphere CloudBurst and IBM Hypervisor Edition virtual images.
First, for all of our WebSphere Process Server and WebSphere Business Monitor users, there are a couple of important pieces of information in this announcement. This announcement outlines the availability of WebSphere Business Monitor Hypervisor Edition. The new image allows you to dispense WebSphere Business Monitor 7.0 environments using WebSphere CloudBurst to VMware hypervisors. In addition, the announcement outlines the expansion of the existing WebSphere Process Server Hypervisor Edition image to support the z/VM platform and the Red Hat Enterprise Linux (RHEL) operating system for VMware.
Moving beyond our BPM set of solutions, IBM also announced the availability of a WebSphere Message Broker Hypervisor Edition. This virtual image allows you to construct and deploy WebSphere Message Broker and WebSphere MQ environments using WebSphere CloudBurst. The stack includes the RHEL operating system, and it is ready to run on VMware hypervisors.
With that in mind, here's an update to the WebSphere CloudBurst supported product matrix:
* Availability subject to dates documented in referenced announcement letters
As you can see, we are continuing our effort to expand the choice you have when using WebSphere CloudBurst to create and deploy application environments to your cloud. If you are interested in using WebSphere CloudBurst for WebSphere Business Monitor, WebSphere Process Server, or WebSphere Message Broker, check out the above announcements. You will find more technical information as well as planned availability dates.
Just one last scrap of food for thought. Feedback from you, our users, is instrumental as we continue to expand software choice with WebSphere CloudBurst. Please continue to let us know your thoughts and needs!
Since its introduction and initial release around one year ago, activity around WebSphere CloudBurst has been a steady buzz. New images, features, enhancements have been rolling in, and can sometimes be a little overwhelming to digest. With that in mind, I want to address a related and frequent question. What products does IBM support for use in WebSphere CloudBurst?
To answer that question, we only need to look at the IBM Hypervisor Edition images currently provided by IBM. Here's a quick matrix of those images:
I hate sitting on secrets. I always have. I understand that sometimes it's in the best interest of everyone (and your job) to keep tight lips, but that does not make it any more fun. Inevitably, the run-up to our annual Impact conference means everyone in the lab is doing their fair share of secret keeping -- just waiting for announce time. For a lot of us, that day ended Tuesday with the announcement of the IBM Workload Deployer v3.0.
Now, you may be wondering, 'I have never heard of this. Why is it version 3.0??' Well, IBM Workload Deployer is a sort of evolution of the WebSphere CloudBurst Appliance, which was previously at version 2.0. This is good news for all of our current WebSphere CloudBurst users because all of the functionality (plus new bits of course) that they have been using in WebSphere CloudBurst are present in IBM Workload Deployer. You can use and customize our IBM Hypervisor Edition images in IBM Workload Deployer. You can build and deploy custom patterns that contain custom scripts in order to create highly customized IBM middleware environments. So, what's the big deal here? Two words: workload patterns.
Workload patterns represent a new cloud deployment model and are an evolution of the traditional topology patterns you may have seen with WebSphere CloudBurst Appliance (I am a little torn between evolution and revolution, but that's splitting hairs). Fundamentally, workload patterns raise the level of abstraction one notch higher than topology patterns and put the focus on the application. That means, when you use a workload pattern the focus is on the application instead of the application infrastructure. Perhaps an example would be helpful to illustrate how a workload pattern may work in IBM Workload Deployer.
Let's consider the use of a workload pattern that was part of the recent announcement, the IBM Workload Deployer Pattern for Web Applications v1.0. Just how might something like this work? It's simple really. You upload your application (maybe a WAR or EAR file), upload a database schema file (if you want to deploy a database with the solution), upload an LDIF file (if you want to setup an LDAP in the deployment to configure application security), attach policies that describe application requirements (autonomic scaling behavior, availability guidelines, etc), and hit the deploy button. IBM Workload Deployer handles setting up the necessary application middleware, installing and configuring applications, and then managing the resultant runtime in accordance with the policies you defined. In short, workload patterns provide a completely application centric approach to deploying environments to the cloud.
Now, if you are a middleware administrator, application developer, or just a keen observer, you probably have picked up on the fact that in order to deliver something as consumable and easy to use as what I described above, one must make a certain number of assumptions. You are right. Workload patterns encapsulate the installation, configuration, and integration of middleware, as well as the installation and configuration of applications that run on that middleware. Most of this is completely hidden from you, the user. This means you have less control over configuration and integration, but you also have significantly reduced labor and increased freedom/agility. You can concentrate on the development of the application and its components and let IBM Workload Deployer create and manage the infrastructure that services that application.
Having shown and lobbied a bit for the benefits of workload patterns, I also completely understand that sometimes you just need more control. That is not a problem in IBM Workload Deployer because as I said before, you can still create custom patterns, with custom scripts based on custom IBM Hypervisor Edition images. The bottom line is that the IBM Workload Deployer offers choice and flexibility. If your application profile meshes well with a workload pattern, by all means use it. If you need more control over configuration or more highly customized environments, look into IBM Hypervisor Edition images and topology patterns. They are both present in IBM Workload Deployer, and the choice is yours.
If you happen to be coming to IBM Impact next week, there will be much more information about IBM Workload Deployer. I encourage you to drop-by our sessions, ask questions, and take the opportunity to meet some of our IBM lab experts. Hope to see you in Las Vegas!
The majority of my posts on this blog address using various features of WebSphere CloudBurst to build private cloud computing environments. Today though, I want to switch gears and instead of talking private cloud, let's talk public cloud. Specifically, let's take a look at the capabilities and services delivered via the IBM Smart Business Development and Test on the IBM Cloud (hereafter referred to as the IBM Cloud).
For some of you, the fact that IBM has a public cloud offering may be a little surprising. After all, if you listen to some uninformed critics you may hear that IBM only cares about private clouds for large enterprises. That is simply untrue. The IBM Cloud is an Infrastructure as a Service public cloud that delivers rapid access to services hosted on IBM infrastructure via a self-service web portal. The IBM Cloud offers multiple payment options, including usage-based billing and reserved capacity billing, and even features a cost estimator so you can confidently establish a monthly budget for your usage.
Regardless of whether you use a private or a public cloud, security should always be a chief concern. As such, IBM takes security very seriously in the IBM Public Cloud. The infrastructure that constitutes the cloud is subject to internal IBM security policies that include regular security scans and tight administrative governance. Your data and virtual machines stay in the data center to which you provisioned them, and physical security policies match those of internal IBM data centers. Additionally, you can optionally make use of the virtual private network option to isolate access to the virtual machines that you provision on the IBM Cloud. Rest assured that security in the IBM Cloud was a guiding design principle and not an afterthought.
With the basics out of the way, let's get on to the question I'm sure you have: What can I run on the IBM Cloud? To get you started, the IBM Cloud provides a nice list of public images in its catalog that are ready for you to provision. These images include WebSphere Application Server, WebSphere sMash, DB2, WebSphere Portal Server, IBM Cognos Business Intelligence, Tivoli Monitoring, Rational Build Forge, and many more. In addition to the public images provided by the IBM Cloud, you can build your own private images. Private images allow you to start with a base public image and then customize it by adjusting the configuration or installing new software. Once customized, you can store these private images on the IBM Cloud and provision them whenever needed. Whether you are using public or private images, you have a number of server configurations to choose from in order to host your environments.
While very brief, I hope this overview provides you with some of the more important details regarding the IBM Cloud. There are few, if any, service providers out there with the enterprise expertise of IBM, and I think you see that reflected in the IBM Cloud. If you are looking at public cloud options for your enterprise application environments, you should definitely take a closer look at the IBM Cloud.
Every time I've visited with customers about WebSphere CloudBurst, without fail someone requests that the appliance support products besides the WebSphere Application Server. We started to address these requests with WebSphere CloudBurst 1.1 when we announced the availability of a DB2 Enterprise 9.7 trial virtual image specifically packaged for use in the appliance. Very recently we continued to respond to customer requests by extending the list of supported products in WebSphere CloudBurst to include WebSphere Portal.
The WebSphere Portal Hypervisor Edition, initially offered as a Beta product, is a virtual image packaging of WebSphere Portal 6.1.5 ready for use in the WebSphere CloudBurst Appliance. The image includes a pre-installed, pre-configured instance of WebSphere Portal. Also contained within the image is an IBM HTTP Server instance configured to route to the WebSphere Portal instance and a DB2 instance installed and configured as the external database for WebSphere Portal. The WebSphere Portal instance also includes Web Content Management enablement along with several samples to help users get started right away.
The user experience when building and deploying WebSphere Portal patterns remains consistent with the existing experience for WebSphere Application Server and DB2 patterns. Another good note is that you can expect similar rapid deployment capability for WebSphere Portal patterns. I got a running virtual system, with all the parts I mentioned above installed and configured (meaning no after the fact integration scripting was necessary) in under 15 minutes.
To see more, check out my new demonstration of the WebSphere Portal Hypervisor Edition for the WebSphere CloudBurst Appliance. If you have a WebSphere CloudBurst Appliance you can download the WebSphere Portal Hypervisor Edition image and a usage guide from here.
I spend most of my time talking with our users about the WebSphere CloudBurst Appliance. While I believe the appliance is somewhat of a hybrid among the Infrastructure as a Service and Platform as a Service layers of the cloud, it is definitely closer to IaaS than PaaS. Users recognize that, and they can identify the capabilities of WebSphere CloudBurst that correlate with IaaS cloud functionality.
That said, I often get questions regarding IBM and work in the PaaS arena. These include questions like, 'Is IBM planning to do anything with PaaS?', 'What is your take on PaaS?', 'What kind of applications do you plan on targeting with your PaaS offering?', and more.
Well, rest assured that IBM is definitely embracing the PaaS movement. Instead of trying to answer these questions in this post though, I want to make you aware of a recent InfoQ interview with IBM WebSphere CTO, Jerry Cuomo. In the interview, Jerry answers the questions above and much more. Jerry talks about IBM's plans for PaaS, what such a platform might look like, and how he sees IBM competing against some of the cloud players in this space.
The interview runs about a half hour, but there is a very nice table of contents that allows you to navigate to specific question/answer segments with Jerry. If you are interested in PaaS, and specifically in IBM's intention in this space, I encourage you to take a look at the interview. Let me know what you think!
When one uses IBM Workload Deployer (previously WebSphere CloudBurst) to deploy a virtual system pattern, they benefit from a completely automated deployment process. The automation includes the creation and placement of virtual machines, injection of IP addresses, initiation of internal processes, and invocation of included scripts. Most of these processes are straightforward and require little more than a brief overview. However, the placement of virtual machines stands out, and it's inner workings are the subject of quite a few questions when I discuss the appliance. With that in mind, I thought I would provide a little more information on how the placement algorithm in IBM Workload Deployer works.
The placement subsystem in IBM Workload Deployer considers three primary elements: compute resource, availability, and license optimization. Compute resource availability is the gating factor for placement. That means that IBM Workload Deployer first looks at the available CPU, memory, and storage resource in the collection of hypervisors making up the cloud group(s) you are targeting for deployment. If a particular hypervisor cannot provide enough resource based on the amount you requested for your deployment, then it is automatically taken out of the eligible hosts pool. It is important to note that IBM Workload Deployer will overcommit CPU, and it will overcommit storage if you direct it to do so. It will not overcommit memory because that could severely degrade the performance of the application(s) running in the virtual machines.
After choosing the pool of hypervisors that are capable of hosting the virtual machines in your deployment from a compute resource perspective, the appliance then considers high availability. To better understand this particular placement stage, let's consider an example. Consider you are deploying a pattern based on WebSphere Application Server Hypervisor Edition and it contains two custom node parts. It is conceivable, and in fact likely, that these two custom node parts will host members of the same cluster, and thus the two nodes will support the same applications. As such, IBM Workload Deployer will attempt to place the two custom nodes on different physical machines in order to prevent a single point of failure. Of course, this depends on having two hypervisors with enough resource (CPU, memory, storage) to host the virtual machines, but the appliance makes that decision in the first placement stage.
After considering compute resource and high availability, IBM Workload Deployer moves to the last stage of placement: license optimization. In this stage, the placement subsystem attempts to place the virtual machines on hypervisors in a way that minimizes the licensing cost to you. The appliance can do this because it is aware of IBM virtualization licensing rules and takes those into account during this stage (if you aren't familiar with virtualization licensing rules and you are curious, ask you're sales representative to explain some time). During this stage, it will not violate any resource overcommit directives or rules in place, nor will it compromise system availability, but it will seek to minimize costs within these parameters.
At this point, I should make something clear that may already have occurred to you. You can override most of these placement rules by creating a cloud group containing only one hypervisor. In this case, IBM Workload Deployer will put all virtual machines on the single hypervisor until it runs out of compute resource (memory is likely to be the constraining factor). I would not suggest that you do this unless you have a good reason or you are in a simple pilot phase, but I do like to point out the art of the possible!
While not incredibly deep from a technical perspective, I do hope that this provided a few helpful details on what goes on during the placement stages of deployment. If you have any questions, do let me know.
A while back I had a four part FAQ series inspired by questions arising from customer visits discussing the first release of WebSphere CloudBurst. With the recent release of WebSphere CloudBurst 2.0, I think it is a good time to revisit an FAQ series with an entirely new set of questions.
For the first part of the series, I want to address a question we get all the time now: "What is the difference between WebSphere CloudBurst and WebSphere Virtual Enterprise?" This question was always fairly common, but now even more so because the new Intelligent Management Pack option for WebSphere Application Server Hypervisor Edition allows you to deploy WebSphere Virtual Enterprise cells using WebSphere CloudBurst.
Fundamentally, the difference between the WebSphere CloudBurst Appliance and WebSphere Virtual Enterprise is a complementary one. WebSphere CloudBurst provides a means to create your application environments, deploy them into a shared, cloud environment, and then manage them over time. In this respect, the appliance focuses on bringing cloud-like capabilities to the application infrastructure layer of your application environments. WebSphere CloudBurst does give you management capabilities for your running, virtualized application environments (i.e. applying maintenances and fixes), but for the most part those capabilities do not extend into the application runtime environment.
Now, you may ask why WebSphere CloudBurst does not extend its reach into the application runtime. The answer is simple: We already have a solution that does just that, WebSphere Virtual Enterprise. WebSphere Virtual Enterprise provides capabilities that allow you to dynamically and autonomically manage your application runtime. You can use WebSphere Virtual Enterprise to not only assign performance goals to your applications, but also to declare the importance of a given application meeting its goals relative to other applications in your organization. This enables the dynamic management of your applications and their resources such that your applications perform according to their goals and relative importance to your business. Simply put, you get an elastic runtime at the application layer of your application environments.
As I said, WebSphere CloudBurst and WebSphere Virtual Enterprise are complementary solutions. Both enable notions of cloud computing, but at different layers of your application environments. WebSphere CloudBurst hones in on the application infrastructure components, while WebSphere Virtual Enterprise zeros in on the applications running in those environments. The new Intelligent Management Pack for WebSphere Application Server Hypervisor Edition means that WebSphere CloudBurst can now dispense WebSphere Virtual Enterprise environments into your on-premise cloud. That means you can take advantage of these complementary solutions from a single and simple management plane.
I hope this helps to clear things up. As always, questions and comments are welcome!