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What are Chef attributes?

An attribute is a specific detail about a node. Attributes are used by Chef Infra Client to understand: The current state of the node. What the state of the node was at the end of the previous Chef Infra Client run. What the state of the node should be at the end of the current Chef Infra Client run.

What is attribute in Chef server?

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 is cookbook in Chef server?

Cookbook is the basic building block of chef configuration management tool. A cookbook contains the complete set of resources required to configure an application or certain thing on a node(a node is a server that has chef agent running, which will pull configurations applicable from chef server).

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.

What is chef Databag?

How do I add a node attribute in chef?

2 Answers

  1. with knife and files: knife node edit is the same as a knife node show -F json > nodename. json , edit the json file with your favorite editor and then knife node from file nodename.
  2. within a recipe for this. In a recipe you can just do a node.set[‘My’][‘Attribute’] = “/path/to/file”

What is node chef?

A node is any machine—physical, virtual, cloud, network device, etc. —that is under management by Chef. In other words, a physical node is any active device attached to a network that can run a chef-client and also allow that chef-client to communicate with a Chef server.

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 difference between Chef and Ansible?

Managing the Tools: With Chef, the client pulls configurations from the server. Ansible uses YAML (Yet Another Markup Language) to manage configurations, a language that’s similar to English, and the server pushes the configurations to the individual nodes. The conclusion is, Ansible is easier to manage.

What do you need to know about chefspec in chef?

ChefSpec is a framework that tests resources and recipes as part of a simulated Chef Infra Client run. ChefSpec tests execute very quickly. When used as part of the cookbook authoring workflow, ChefSpec tests are often the first indicator of problems that may exist within a cookbook. ChefSpec is packaged as part of Chef Workstation.

How are attributes updated in chef infra server?

After the node object is rebuilt, all of the attributes are compared, and then the node is updated based on attribute precedence. At the end of every Chef Infra Client run, the node object that defines the current state of the node is uploaded to the Chef Infra Server so that it can be indexed for search.

How are node attributes set in chefspec example?

Node attributes are set using the default_attributes, normal_attributes , override_attributes, and automatic_attributes helper methods. These inherit from a parent group to its children using a deep merge, like in other places in Chef: Any values set using automatic_attributes take priority over Fauxhai data.

How does a cookbook work in Chef server?

A cookbook is a collection of recipes. They are the basic building blocks which get uploaded to Chef server. When Chef run takes place, it ensures that the recipes present inside it gets a given infrastructure to the desired state as listed in the recipe.