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CI/CD Workflow with Containers, Kubernetes, and Cloudflare

This sequence diagram outlines the workflow for organizing your work using CI/CD, containers, Kubernetes, and Cloudflare. It covers the entire lifecycle from initial drafting to production, including patching, upgrading, and eventual sunset. This approach ensures a streamlined process, enhancing efficiency, security, and scalability.

The sequence diagram you've provided outlines a comprehensive workflow for a DevOps pipeline involving multiple components such as a CI/CD pipeline, container registry, Kubernetes cluster, Cloudflare, and monitoring/logging tools. Below is a textual breakdown of the process:

Main Workflow:​

  1. Code Commit and Testing:

    • Developer commits code to a repository.
    • The CI/CD Pipeline runs automated tests and reports the results back to the Developer.

  2. Build and Deploy:

    • The CI/CD Pipeline builds a Docker image and pushes it to the Container Registry.
    • The CI/CD Pipeline then deploys this image to a staging environment in the Kubernetes Cluster.

  3. Staging Validation:

    • The Kubernetes Cluster begins monitoring the staging environment via Monitoring & Logging tools.
    • The Developer validates the deployment in staging and approves it for production.

  4. Production Deployment:

    • The Kubernetes Cluster deploys the application to the production environment and exposes the service through Cloudflare access points.
    • End Users access the production service via Cloudflare.
    • The Monitoring & Logging system reports any issues or performance metrics back to the Kubernetes Cluster, which then provides feedback to the Developer.

Alternative Paths:​

  • Patching and Upgrading:

    • The Developer updates the code for a patch or upgrade.
    • The CI/CD Pipeline deploys the patch/upgrade to the Kubernetes Cluster.
    • The Kubernetes Cluster monitors the patch/upgrade process through the Monitoring & Logging tools.

  • Sunset Stage:

    • The Developer initiates the sunset procedure for the application.
    • The Kubernetes Cluster removes access points from Cloudflare, decommissions containers from the Container Registry, stops monitoring, and confirms the completion of the sunset process with the Developer.
    • End Users find that the service is no longer available.

Workflow Summary:​

  • The overall process ensures that code is thoroughly tested, deployed, monitored, and made available to end users with an option for patching/upgrading and sunsetting the application as needed.

This diagram is a robust representation of modern DevOps practices, demonstrating how various components interact in a typical continuous integration/continuous deployment pipeline.