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CompTIA Linux+ XK0-005 - 3.4 - Summarize Common Infrastructure as Code Technologies

Infrastructure as Code (IaC) is an approach that allows the provisioning and management of infrastructure resources using machine-readable configuration files. It brings automation, consistency, and scalability to infrastructure management. In this overview, we will summarize the key technologies related to Infrastructure as Code.

File Formats

IaC relies on specific file formats for defining infrastructure configurations. The following file formats are commonly used:

  • YAML Ain't Markup Language (YAML): A human-readable data serialization format often used for configuration files.
  • JavaScript Object Notation (JSON): A lightweight data interchange format commonly used for transmitting data between a server and a web application.

Understanding these file formats is crucial as they serve as the foundation for expressing infrastructure configurations in a structured and readable manner.


Various utilities are available to implement Infrastructure as Code. These utilities provide the necessary tools and frameworks to define and manage infrastructure resources. The following utilities are commonly used:

  • Ansible: An open-source automation platform that allows you to define infrastructure configurations using YAML files.
  • Puppet: A declarative configuration management tool that enables you to define infrastructure state using a Puppet-specific language.
  • Chef: A configuration management tool that uses a Ruby-based DSL (Domain-Specific Language) to define infrastructure configurations.
  • SaltStack: An event-driven, state-based automation tool that uses YAML or Python-based configuration files to define infrastructure state.
  • Terraform: An infrastructure provisioning tool that uses a declarative configuration language to define infrastructure resources across multiple cloud providers.

These utilities offer various features and approaches to automate infrastructure management, making them valuable assets in implementing Infrastructure as Code.

Continuous Integration/Continuous Deployment (CI/CD)

Continuous Integration/Continuous Deployment (CI/CD) practices involve automating the integration, testing, and deployment of software changes. CI/CD pipelines are designed to streamline the software development lifecycle. Understanding the use cases and benefits of CI/CD is essential in adopting efficient and reliable software delivery practices.

Advanced Git Topics

Git is a powerful version control system widely used in software development. In the context of Infrastructure as Code, understanding advanced Git topics is valuable. The following topics are particularly relevant:

  • Merge: Integrating changes from one branch into another branch.
  • Rebase: Moving or combining a sequence of commits to a new base commit.
  • Pull requests: A method for proposing changes to a repository and initiating a discussion or review process.

These advanced Git topics enable effective collaboration, version control management, and code review in Infrastructure as Code workflows.

By familiarizing yourself with these common Infrastructure as Code technologies and practices, you will be equipped to efficiently manage and automate infrastructure deployments, ensuring consistency and scalability in your Linux environments.

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