![]() Puppet, for instance, is declarative: the sysadmin describes a desired end state and the tool attempts to reach it. In fact, a particular CM tool’s approach is greatly influenced by the underlying language upon which it was built (which is in turn either imperative or declarative by nature). Imperative/declarative constructs also carry over to IT domains such as CM. It’s telling the system specifically how to do something with the expectation that the desired outcome will result. In contrast, imperative programming involves writing code that follows explicit steps to solving a problem, completing a task, or achieving a desired result. One describes what needs to happen the minutiae for making it so are left to the system. Defining Declarative and Imperative Modelsĭifferences between the declarative and imperative models can be summed up in one sentence: imperative focuses on how and declarative focuses on what. In a software engineering context, declarative programming means writing code to describe what the program should do as opposed to how it should do it. The recurring debate over which is superior has garnered staunch supporters on both sides and warrants a closer inspection. However, seldom do differing approaches generate as much dissent as the declarative and imperative models for CM. In terms of CM, it’s a given that one particular methodology may work for a company but not for another. Organizations are left to identify tools and approaches most suitable for their use cases, and will either swear by or disparage them depending on their level of success. Being that DevOps is a relatively new paradigm - movement - methodology -, standards around it have yet to be codified and set in stone. These integral pieces often form the pillars of an organization’s DevOps efforts, even as other bigger pieces like overarching best practices and guidelines are still being tried and tested. ![]() This functionality depends on puppetdb.As a group of concepts, DevOps has converged on several prominent themes including continuous software delivery, automation, and configuration management (CM). This module makes use of the puppetdbquery module to distribute sshkeys across the infrastructure (optional). ![]() This module makes use of exported resources (optional) if you descide to use this functionallity please configure this in your nf file on the master.installs compatible java version (optional).xldeploy repository configuration items.installation/service/configuration files for XL Deploy.It can take care of installing XL Deploy servers as well as integrate middleware components elsewhere in your infrastructure. This module enables you to tie this deployment software into your puppet environment. XL Deploy is a kick-ass modular platform independant software deployment system. The xldeploy module enables you to install and manage large XL Deploy enabled infrastructures. THIS CODE AND INFORMATION ARE NOT SUPPORTED BY XEBIALABS. IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESSįOR A PARTICULAR PURPOSE. THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR Reference - An under-the-hood peek at what the module is doing and howĭevelopment - Guide for contributing to the module Usage - Configuration options and additional functionality Setup - The basics of getting started with puppet-xldeploy Module Description - What the module does and why it is useful
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