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DevOps

DevOps is a set of practices that combines software development (Dev) and IT operations (Ops).

It aims to shorten the systems development life cycle and provide continuous delivery with high software quality.

Building on Agile and Lean, DevOps enables the business to respond to changes and meet customer needs faster.


DevOps process:

  1. Coding – code development and review, source code management tools, code merging.
  2. Building – continuous integration tools, build status.
  3. Testing – continuous testing tools that provide quick and timely feedback on business risks.
  4. Packaging – artifact repository, application pre-deployment staging.
  5. Releasing – change management, release approvals, release automation.
  6. Configuring – infrastructure configuration and management, infrastructure as code tools.
  7. Monitoring – applications performance monitoring, end-user experience.

Benefits of DevOps:

  1. Faster time to market
  2. Higher ROI
  3. Greater user/customer satisfaction
  4. Increased efficiency
  5. Improved collaboration
  6. Early detection and correction of issues

CI/CD is a method to frequently deliver apps to customers by introducing automation into the stages of app development.

The main concepts attributed to CI/CD are continuous integration, continuous delivery, and continuous deployment.

CI/CD is a solution to the problems integrating new code can cause for development and operations teams.

Specifically, CI/CD introduces ongoing automation and continuous monitoring throughout the lifecycle of apps, from integration and testing phases to delivery and deployment.

Taken together, these connected practices are often referred to as a "CI/CD pipeline" and are supported by development and operations teams working together in an agile way with a DevOps.

Tools used:

Git (Coding Phase):  tool used for source code management.

Maven (Build Phase): dynamically downloads Java libraries and Maven plug-ins from one or more repositories and create build.

JUnit (Test Phase):  used to write and run repeatable automated tests

Jenkins (Release Phase): central build and continuous integration

Docker (Deploy Phase): enables developers to package applications into containers, configure containers ready to deploy to the cloud.

Kubernetes (Operate Phase): Kubernetes is a system that manages containers (containerized applications) where a container could be explained as a lightweight virtual machine. To build an application you need to build a bunch of containers and then use Kubernetes to manage those containers.

AWS Cloud Watch (Monitor Phase): collects monitoring and operational data in the form of logs, metrics, and events.


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