A recipe is the most fundamental configuration element within the organization. A recipe: May have a dependency on one (or more) recipes. Must be added to a run-list before it can be used by Chef Infra Client.
What is recipe in Chef tool?
A recipe is a file that contains Chef code. Using your favorite text editor, create the recipe file hello. This file can be anywhere—no specific directory structure is required. By convention, files that contain Chef code have the extension . rb to show they are written in Ruby.
What is Chef cookbook and recipe?
A cookbook is the fundamental unit of configuration and policy distribution in Chef Infra. A cookbook defines a scenario and contains everything that is required to support that scenario: Recipes that specify which Chef Infra built-in resources to use, as well as the order in which they are to be applied.
How do I create a recipe in Chef cookbook?
Execute command ‘ chef exec ruby -c test-cookbook/recipes/test-recipe. rb ‘ to check whether code wrote is right. Now apply a recipe using chef-client -zr “recipe[test-cookbook::test-recipe]” . Now you have created a simple cookbook and recipe to create a file into a system.
What is cookbook in Chef server?
Cookbooks. Cookbooks are the basis for managing the configurations on any node. Cookbooks contain values and information about the desired state of a node. Using the cookbook, the Chef server and Chef client ensure the defined state is achieved.
What is recipe in DevOps?
A recipe is basically a collection of resource definitions that will create a step-by-step set of instructions to be executed by the nodes. These resource definitions can be mixed with Ruby code for more flexibility and modularity.
What language are Chef recipes written in?
Chef scripts, which are called recipes , are made of reusable definitions that are written in the Ruby programming language. Chef recipes that perform related functions are grouped in a single container, called a cookbook. Cookbooks and recipes automate common infrastructure tasks.
What is attribute in Chef?
An attribute is a specific detail about a node. Attributes are used by the chef-client to understand: The current state of the node. What the state of the node was at the end of the previous chef-client run.
What does node mean in Chef?
A node is any device—physical, virtual, cloud, network device, etc. —that is under management by Chef Infra. The types of nodes that can be managed by Chef include, but are not limited to, the following: Node Type. Description.
What is Chef Databag?
Data bags are the only built-in mechanism Chef provides to store and access shared data between nodes. Each data bag contains a list of items. Each item is a JSON-formatted name-value pair collection expected to have exactly the same schema for every item in the data bag.
Does Chef require an agent?
Chef utilizes a master-agent model and a master server. This means a Chef installation requires a workstation to control the master. Agents are installed from the workstation using the knife tool that uses SSH for deployment. Chef configs are packaged into JSON files called recipes.
What is the difference between recipe and cookbook in Devops?
Cookbooks are a collection of recipes. Apart from recipes, cookbooks contain other elements like metadata, attributes, libraries, resources, templates, and tests which helps the nodes to achieve their desired state. Cookbooks can be created by Chef commands or by the Chef command-line tool called Knife.
What are Chef resources?
Chef resource represents a piece of the operating system at its desired state. It is a statement of configuration policy that describes the desired state of a node to which one wants to take the current configuration to using resource providers.
What is the purpose of a cookbook?
cookbook, collection of recipes, instructions, and information about the preparation and serving of foods. At its best, a cookbook is also a chronicle and treasury of the fine art of cooking, an art whose masterpieces—created only to be consumed—would otherwise be lost.
What is Chef script?
Chef is a company and the name of a configuration management tool written in Ruby and Erlang. It uses a pure-Ruby, domain-specific language (DSL) for writing system configuration “recipes”.
What is Chef cook?
A chef is a trained professional cook and tradesman who is proficient in all aspects of food preparation, often focusing on a particular cuisine. The word “chef” is derived from the term chef de cuisine (French pronunciation: [ʃɛf. də. kɥi. zin]), the director or head of a kitchen.
What is Jenkins and Chef?
In a nutshell Jenkins CI is the leading open-source continuous integration server. Built with Java, it provides over 300 plugins to support building and testing virtually any project. Chef and Jenkins are primarily classified as “Server Configuration and Automation” and “Continuous Integration” tools respectively.
What language is Chef?
The word chef, meaning “a skilled cook,” is a common word in English today, and it’s not even surprising to most of us that it originally comes from French.
Why does Chef use Ruby?
Ruby is a simple programming language: Chef uses Ruby as its reference language to define the patterns that are found in resources, recipes, and cookbooks. Use these patterns to configure, deploy, and manage nodes across the network.
What is Chef DevOps tool?
Chef is a configuration management technology used to automate the infrastructure provisioning. It is developed on the basis of Ruby DSL language. In DevOps, we use Chef to deploy and manage servers and applications in-house and on the cloud.
What is Chef framework?
Ultimately, Chef is a framework to automate and manage infrastructure and applications. Specifically, Chef translates system administration tasks into reusable definitions, known as cookbooks and recipes. In a recipe, Chef authors define a system’s desired state by writing configuration code.