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Hüseyin Deniz KIVRAK edited this page Nov 17, 2024 · 5 revisions

What We Need & Why We Need Them

  • Docker:

    • Purpose: Provides containerization technology to create, deploy, and run applications in isolated environments known as containers.
    • Why: Essential for building and running containerized applications, which can then be orchestrated and managed by Kubernetes.

  • Minikube:

    • Purpose: A tool that creates a local Kubernetes cluster on your machine for development and testing.
    • Why: Allows you to experiment with Kubernetes features and deploy applications locally without needing a full-scale cloud or on-premises cluster.

  • Terraform:

    • Purpose: An Infrastructure as Code (IaC) tool for provisioning and managing cloud and on-premises resources using declarative configuration files.
    • Why: Automates the creation, modification, and management of Kubernetes infrastructure and other resources. Ensures reproducibility and version control of your infrastructure setup.

  • Helm:

    • Purpose: A package manager for Kubernetes that simplifies the deployment and management of applications using Helm charts.
    • Why: Allows you to define, install, and upgrade complex Kubernetes applications in a consistent and repeatable manner. Helm charts provide templated configurations for deploying applications.

  • Argo CD:

    • Purpose: A GitOps continuous delivery tool for Kubernetes that automates the deployment of applications from Git repositories to Kubernetes clusters.
    • Why: Manages and synchronizes Kubernetes applications through Git repositories, ensuring that the state of applications in the cluster matches the desired state defined in Git. Offers a web UI for visualizing and managing deployments.

  • Argo Rollouts:

    • Purpose: A Kubernetes controller that provides advanced deployment strategies such as blue-green, canary, and progressive delivery.
    • Why: Enables controlled rollouts, traffic shifting, and seamless updates, reducing downtime and minimizing the risk of failed deployments.

  • Argo Workflows:

    • Purpose: A workflow engine for Kubernetes that allows the orchestration of complex workflows as a series of containerized tasks.
    • Why: Essential for automating CI/CD pipelines, data processing tasks, and AI/ML workflows. Provides robust workflow management with features like retries, parallelism, and conditional execution.

  • Flux:

    • Purpose: A GitOps tool that automates the continuous delivery of Kubernetes applications. Flux specializes in automating image updates and synchronizing Git-managed configurations.
    • Why: Monitors container registries for new image versions and automatically updates the image references in your Kubernetes manifests. This automation reduces manual intervention, ensuring that deployments are always up to date without requiring direct changes to the Git repository.

  • Azure CLI (az):

    • Purpose: A command-line tool for managing Azure resources, including Azure Kubernetes Service (AKS).
    • Why: Simplifies the management of AKS clusters by providing commands for provisioning, scaling, and maintenance.

  • AWS CLI (aws):

    • Purpose: A command-line tool for managing AWS resources, including Elastic Kubernetes Service (EKS).
    • Why: Provides commands for provisioning, updating, and scaling EKS clusters as part of the broader AWS ecosystem.

  • gcloud CLI (gcloud):

    • Purpose: A command-line tool for managing Google Cloud resources, including Google Kubernetes Engine (GKE).
    • Why: Enables efficient management of GKE clusters with commands for provisioning, scaling, and monitoring.

  • doctl CLI (doctl):

    • Purpose: A command-line tool for managing DigitalOcean resources, including DigitalOcean Kubernetes Service (DOKS).
    • Why: Facilitates the setup and management of DOKS clusters, offering commands for cluster provisioning, updates, and resource scaling.

Note: The Azure CLI, AWS CLI, gcloud CLI, and doctl CLI are installed to authenticate and provide Terraform with the necessary permissions to provision and manage Kubernetes clusters and other resources on their respective cloud platforms.

Goals

  • Automate and Manage Infrastructure:
    Leverage GitOps principles with Argo CD, Terraform, Helm, and Flux for:

    • Consistent and version-controlled infrastructure management
    • Automated image updates

  • Build a Stable CI/CD Pipeline:
    Create a robust pipeline with:

    • Multi-staging environments and production rollouts (blue-green and canary) using Argo Rollouts and Helm
    • Automated database migrations and easy rollback mechanisms
    • Support for GPU-based workloads and AI/ML pipelines
    • Multi-cloud deployments (AKS, EKS, GKE, DOKS) with Terraform and Kubernetes manifests

  • Enhanced Observability:
    Monitor deployments and performance with Prometheus and Grafana.

  • Load Testing:
    Validate system resilience and scalability under heavy traffic.

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