How to Install and Configure Chef on Ubuntu 18.04

How to Install and Configure Chef on Ubuntu 18.04

In this article, we will be reviewing the Chef software, how it works, and why it is useful. We will also explore how it is helpful in DevOps. And then, we will install Chef on Ubuntu 18.04.

In this article, we will be reviewing the Chef software, how it works, and why it is useful. We will also explore how it is helpful in DevOps. And then, we will install Chef on Ubuntu 18.04.

What is Chef?

Chef is a configuration management system written in Ruby and Erlang using the object-oriented language for configurations description. It is used to ease the task of configuring and maintaining multiple servers. It can be integrated into cloud platforms, such as the new Liquid Web Managed Cloud and VMWare platforms to manage the servers’ configuration processes.

It is essential to remember that there are two types of configuration management:

  1. Push Configuration – when the central server sends configuration to other servers, e.g., Ansible uses such a scheme. This can be useful when there are devices, and you are not sure whether they could be available at this time;
  2. Pull Configuration – when nodes check servers from time to time and extract information and configuration, e.g., Chef uses this scheme.    

Also, it is essential to keep in mind that it uses the infrastructure as code methodology. This approach uses the software to manage infrastructure description and management through configuration files rather than manual management.

DevOps, along with other internal sectors begin using it by determining which tasks should be automated. The Recipes and Cookbooks describe those processes, and then they are tested using additional tools such as ChefSpec (the platform which checks resources and recipes as part of a simulation run). When everything works as intended, the Recipes and Cookbooks are put on the Chef server and run using the Knife tool. This tool allows users to use the software in a more seamless manner.

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