DevOps

DevOps combines cultural philosophies, practices, and tools to increase an organization's ability to deliver applications and services at high velocity. Accelerated velocity is accomplished by evolving and improving products at a faster pace than organizations using traditional software development and infrastructure management processes. DevOps uses a concept referred to as Infrastructure as a Code where scripting is used to instantiate cloud-based infrastructure through the use of APIs. The primary tools for configuration management are the following:

• Chef: Uses Ruby, a domain-specific language (DSL), to write system configuration recipes. Chef installation uses a workstation to control the master. Agents are installed using the knife tool with SSH. Managed nodes authenticate with the master using certificates.
• Puppet: Used to manage data center orchestration. It works with many operating systems and provides operational support tools for major OSes. Setup requires a master server...