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Tag Archives: Python

6 Simple Steps: Installing vFabric Administration Server (VAS) and Provisioning tc Server across 3 Nodes

As a suite of products, vFabric offers a single SKU model that includes the entire suite. Besides offering an economically beneficial licensing model that is flexible, based on average use, and hardware independent, the vFabric team has developed the vFabric Administration Server (VAS) to help make installation, configuration, and operations easier.

If you missed a previous article explaining how VAS work and what it can do for you, VAS is based on a single system image design (SSI) and allows you to define a group of nodes where each operation on the group is applied to each node who is a member of the group. This approach provides time savings and reduces errors by keeping systems more consistent, allowing easier ways to scale, and simplifying administration. VAS also provides a robust set of REST APIs for virtually all of its functionality. In addition to vFabric tc Server, VAS can manage vFabric RabbitMQ, vFabric GemFire, vFabric SQLFire, and vFabric Web Server. VAS 1.1.1 was recently released with new features and many bug fixes.

In this article (and demonstration further below), we will show you six steps that give you an idea of how easy it is to provision using VAS. We will show you how to install VAS and use it to provision vFabric tc Server across three nodes along with a WAR file. The explanation below refers to examples from RubyGems.org and GitHub/vFabric/VAS-Ruby-API along with the latest VAS documentation.

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Expert Interview: The Polyglot Rabbit: Examples of Multi-Protocol Queues in RabbitMQ

Recently, we had the opportunity to speak with architect Brett Cameron about vFabric RabbitMQ.  A popular speaker, Brett is well known for his effort to port Erlang and RabbitMQ over to the “legacy” OpenVMS operating system platform (now owned by HP). With over 19 years in the software industry, Brett specializes in systems integration and large, distributed systems. Of course, he has spent a lot of time with OpenVMS – an OS with one of the more interesting histories in the software industry.

When we started chatting with Brett, he had recently discussed the concept of the Polyglot Rabbit with Alexis Richardson and written a great article titled, “The Polyglot Rabbit: Examples of Multi-Protocol Queues in RabbitMQ.” According to Brett, the main goal of this article is about the fact that you can publish messages into this environment via one protocol and consume via one or more other protocols (simultaneously if you want). “It’s a brilliant and a very powerful capability.” Brett felt that this capability was possibly not being promoted enough, and hopefully the article will go some way towards fixing this.

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Three Reasons why you need vFabric Administration Server

In the 5.1 release of the vFabric Suite, we’ve added a new tool – vFabric Administration Server (VAS). VAS makes it significantly easier to administer some of the components of the vFabric Suite across small deployments with a handful of machines or something much larger. The first release of the Administration Server provides support for administering GemFire, RabbitMQ, and tc Server via a REST API. Some examples of VAS’s capabilities include installing GemFire, RabbitMQ, or tc Server, starting and stopping them, managing their configuration files, and deploying web applications to tc Server.

While there are more capabilities, here are three reasons why you need vFabric Administration Server:

  1. Improved Deployment Consistency and Time Savings
  2. Quick and Easy Scale Up and Down
  3. Simplified and Centralized Administration

Improved Deployment Consistency and Time Savings

VAS-group-membersA common problem encountered by our customers is ensuring that their deployments are consistent when spread across multiple machines. It’s all too easy for a deployment that started out with identically configured machines to slowly diverge as changes are made inconsistently across the machines. vFabric Administration Server addresses this by building upon the concept of a single system image, i.e. a collection of systems that are used as a single system. In VAS, a single system image is known as a group, with each system in the group being called a node.

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