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Pipelines in cloud native applications, GitOps and beyond

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whoami

Samir Romdhani

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Software engineer

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Certified Kubernetes Administrator CKA

Certified Kubernetes Application Developer CKAD

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Open source contributor:

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https://romdhanisam.github.io

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Outline

  • What is CI/CD ?
  • Implementing CI/CD with Gitlab-ci (Demo time)
  • Implementing CI/CD with Github Action (Demo time)
  • What is Cloud Native CI/CD ?
  • What is GitOps ?
  • Revisit previous demo with Argo-cd (Demo time)
  • Tekton Concepts

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CI/CD Defined

CI/CD is a method to deliver apps to customers more frequently using automation into the stages of app development.�The main concepts attributed to CI/CD are continuous integration, continuous delivery/deployment.

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CI/CD�Phases

CI

CD

Source Build📦 Test, Code quality 🎯

Artifact repository

Maven,

Jar,

Npm package,

Docker image

...

Deploy to dev to QA env to PROD env 🚀

Simplified Diagram

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Why is CI/CD Important

What tools can we use: Big list, lets go first with Gitlab-ci and github action

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  • Helps avoid bugs and code mistake.
  • Simplify rollback
  • Reduce complexity and increase efficiency when apps become larger

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Demo time

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Gitlab ci��Repo: https://gitlab.com/lab-gitlab-ci1/demo-app�Branch: main

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Gitlab ci

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Github action��Repo: https://github.com/romdhanisam/lab-github-actions�Branch: main

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What is Cloud Native CI/CD

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Cloud Native application

Cloud Native is an approach to software development in which apps are designed from outset to be used in the cloud.

The Cloud Native method is based on 4 dependent components

  1. Microservices
  2. Container technologies

3. Developpement Process

4. Continuous Delivery

(1,2) basis for developing cloud-native applications.

(3,4) Agile DevOps Culture

(1,2)Developers 🤝 (3,4)Entreprises

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Cloud Native CI/CD

Cloud Native CI/CD Principles

  • Cloud Native CI/CD is a practice to build, test, deploy, and monitor cloud-native applications in the cloud.
  • A successful cloud-native CI/CD process relies on the Infrastructure-as-Code (IaC) toolset
  1. Containers (Pipeline built for container apps and runs on Kubernetes)
  2. Serverless (Runs with no CI/CD engine)
  3. DevOps

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What is GitOps ?

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GitOps

  • GitOps is a way of implementing Continuous Deployment for cloud native applications.
  • Git as a single source of truth

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Revisiting previous demo with Argo-cd

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Argo CD

A declarative GitOps continuous delivery tool for kubernetes CNCF project�https://argoproj.github.io

Repo: https://github.com/romdhanisam/lab-github-actions�Branch: feat/argocd

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Argo cd Goal

  • Keep app in sync with Yaml manifests
  • Provides a dashboard to manage all the deployed applications

Running app

YAML�Deployment manifests

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Tekton

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https://tekton.dev

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Tekton Concepts

  • Tekton is an open-source framework, and a foundation, for creating CI/CD systems, allowing developers to build, test, and deploy across cloud providers.�
  • As a Kubernetes-native framework, Tekton makes it easier to deploy across multiple cloud providers
  • Using Custom Resource Definitions (CRDs) in Kubernetes, Tekton uses the Kubernetes control plane to run pipeline tasks

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Tekton Pipeline

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Thanks all

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