In this previous article ‘Pattern-type (Part 6): How to add operation with SmartCloud Application Services‘, I explained how to add operation on a pattern-type. Operations provide you the ability to take actions on a deployed pattern/virtual application. These actions can be setting parameters and take actions based on these parameters by launching a specified script and this is done by creating an operation.json file in the appmodel. Continue reading →

In my previous articles Pattern-type (Part 5): Scaling in/out based on your own monitoring collector with SmartCloud Application Services I explained how to Scale in/out using your own monitoring collect (ie: counting files in a directory). In noticed in the documentation (IWD Infocenter) at the end of the page a mention of a ‘CPU’ category and ‘Used’ metrics. This let me think we can re-use some embedded OS metrics in a scaling policy and I will show here how to do it. Continue reading →

When you define a role in a pattern type, you can associate to this role a number of operations you would like to launch once the pattern is deployed. These operations will be available from the ‘Manage’ panel under the operation tab. Continue reading →

In the new PDK (version 1.0.3) there is a plugin that allows you to create new structure for plugin, OSGI Component, Node parts, parts and and roles… Continue reading →

From the Pattern-type (Part 4): Adding your own monitoring collector to a pattern-type with SmartCloud Application Services, we learned how to add a collector to a pattern-type in order to monitor the deployed services. It was a simple collector counting the number of files in a directory. What I propose in this article is to explain how to leverage this collector to add scaling in/out rules based on the metrics provided by this collector. Continue reading →

In the previous articles, I explained own to creates pattern-type for a single server, a master-slave and also how to add static scalability to a pattern-type. Now, if we want to have a dynamic scalability, a scalability which react on a monitoring feature, we have to be able to collect information from the server and this exactly what I will explain in this article. Continue reading →

After having created the “Create step-by-step a simple pattern-type with SmartCloud Application Workload Services” article, I challenged myself to create a Master-Slave pattern-type. The main difference consist of creating a link between both servers from the Master to the Slave, and retrieve some information from the Slave (ie: IP address) to configure the Master. Continue reading →