Deployment

Process

A detailed guide to the deployment process in the EIT platform, leveraging GitOps principles.

Deployment process

The deployment process follows a structured workflow to ensure efficient and controlled releases across multiple environments.

Deployment Config

The deployment-config repository acts as the central configuration store for deployment automation tools like Flux or ArgoCD, which synchronize Kubernetes clusters with Git-based configurations.

Key aspects:

  • Contains rendered Kubernetes manifests, such as:
    • Deployments
    • Services
    • Jobs (batch operations)
    • HTTPRoutes
    • Ingress configurations
  • Helm releases typically are not needed but are available if cluster-side support is available, allowing more advanced deployment definitions and configurations.
  • Approval Process:
    • Pull Request (PR) policies ensure proper governance, especially for staging and production environments.
    • Automated deployment is enabled typicall for development and testing environments.
  • Continuous Deployment (CD):
    • Supports fully automated deployments when new code is merged into a specific branch.
    • see CD details

Deployment Template

To simplify deployment definitions, the deployment-templates repository provides a set of reusable templates and configurations based on Helm.

This repository allows developers to:

  • Define deployments easily with a structured configuration approach.
  • Use templating mechanisms to generate Kubernetes manifests dynamically.
  • Manage deployment consistency across environments.

Structure of a Deployment Template:

  1. EIT config file
  • config.yaml
  • Core parameters like Helm chart name, Kubernetes namespace, and environment-specific configurations.
  1. Helm values files:
  • values.yaml
  • Stores environment-specific values required for Helm charts.
  1. Gateway configuration file:
  • gw-config.yaml
  • Defines API exposure, security settings, and routing rules.

Example Deployment:

Example blog posts service deployment

Deployment Template Example

Approval Process:

  • Mandatory PR approval policies are enforced for production and staging deployments.

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