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Infrastructure as Code

Huy Nguyen edited this page Apr 5, 2025 · 3 revisions

Infrastructure as Code

This guide explains how to use Infrastructure as Code (IaC) tools to automate the deployment and management of Mixcore CMS infrastructure.

Overview

Infrastructure as Code allows you to define and provision your infrastructure using configuration files. This approach offers several benefits:

  • Reproducibility: Ensure consistent environments
  • Version Control: Track infrastructure changes
  • Automation: Reduce manual operations
  • Documentation: Self-documenting infrastructure
  • Scalability: Easy to scale up or down

IaC Tools for Mixcore

Terraform / OpenTofu

Both Terraform and OpenTofu use the same HCL (HashiCorp Configuration Language) syntax and can be used interchangeably for most scenarios.

Prerequisites

  • Terraform or OpenTofu installed
  • Cloud provider credentials configured
  • Basic understanding of Terraform/OpenTofu concepts

Sample Azure Deployment

Create a main.tf file for deploying Mixcore CMS to Azure:

# Configure the Azure provider
terraform {
  required_providers {
    azurerm = {
      source  = "hashicorp/azurerm"
      version = "~> 3.0"
    }
  }
}

provider "azurerm" {
  features {}
}

# Create a resource group
resource "azurerm_resource_group" "mixcore_rg" {
  name     = "mixcore-resources"
  location = "East US"
}

# Create an App Service Plan
resource "azurerm_service_plan" "mixcore_plan" {
  name                = "mixcore-appserviceplan"
  resource_group_name = azurerm_resource_group.mixcore_rg.name
  location            = azurerm_resource_group.mixcore_rg.location
  os_type             = "Linux"
  sku_name            = "P1v2"
}

# Create an App Service
resource "azurerm_linux_web_app" "mixcore_app" {
  name                = "mixcore-webapp"
  resource_group_name = azurerm_resource_group.mixcore_rg.name
  location            = azurerm_resource_group.mixcore_rg.location
  service_plan_id     = azurerm_service_plan.mixcore_plan.id

  site_config {
    application_stack {
      dotnet_version = "9.0"
    }
  }

  app_settings = {
    "ASPNETCORE_ENVIRONMENT" = "Production"
  }

  # Connection string would be added here
}

# Database and other resources would follow

Deploy with:

terraform init
terraform plan
terraform apply

Pulumi

Pulumi allows infrastructure to be defined using programming languages like JavaScript, TypeScript, Python, Go, and C#.

TypeScript Example for Azure (Simplified)

import * as pulumi from "@pulumi/pulumi";
import * as azure from "@pulumi/azure-native";

// Create a resource group
const resourceGroup = new azure.resources.ResourceGroup("mixcoreResourceGroup", {
    location: "eastus",
});

// Create an App Service Plan
const appServicePlan = new azure.web.AppServicePlan("mixcoreAppServicePlan", {
    resourceGroupName: resourceGroup.name,
    kind: "Linux",
    reserved: true,
    sku: {
        name: "P1v2",
        tier: "PremiumV2",
    },
});

// Create a Web App
const webApp = new azure.web.WebApp("mixcoreWebApp", {
    resourceGroupName: resourceGroup.name,
    serverFarmId: appServicePlan.id,
    siteConfig: {
        linuxFxVersion: "DOTNETCORE|9.0",
        appSettings: [
            { name: "ASPNETCORE_ENVIRONMENT", value: "Production" },
        ],
    },
});

// Export the website URL
export const websiteUrl = webApp.defaultHostName;

AWS CloudFormation

CloudFormation is AWS's native IaC service.

Sample template:

AWSTemplateFormatVersion: '2010-09-09'
Resources:
  MixcoreVPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: 10.0.0.0/16
      EnableDnsSupport: true
      EnableDnsHostnames: true
      Tags:
        - Key: Name
          Value: MixcoreVPC

  MixcoreECSCluster:
    Type: AWS::ECS::Cluster
    Properties:
      ClusterName: MixcoreCluster

  # Additional resources would be defined here

Azure Resource Manager (ARM)

ARM templates are Azure's native IaC format.

Sample template:

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "resources": [
    {
      "type": "Microsoft.Web/serverfarms",
      "apiVersion": "2021-02-01",
      "name": "mixcoreAppServicePlan",
      "location": "[resourceGroup().location]",
      "sku": {
        "name": "P1v2",
        "tier": "PremiumV2"
      },
      "kind": "linux",
      "properties": {
        "reserved": true
      }
    },
    {
      "type": "Microsoft.Web/sites",
      "apiVersion": "2021-02-01",
      "name": "mixcoreWebApp",
      "location": "[resourceGroup().location]",
      "dependsOn": [
        "[resourceId('Microsoft.Web/serverfarms', 'mixcoreAppServicePlan')]"
      ],
      "properties": {
        "serverFarmId": "[resourceId('Microsoft.Web/serverfarms', 'mixcoreAppServicePlan')]",
        "siteConfig": {
          "linuxFxVersion": "DOTNETCORE|9.0",
          "appSettings": [
            {
              "name": "ASPNETCORE_ENVIRONMENT",
              "value": "Production"
            }
          ]
        }
      }
    }
  ]
}

GitOps Approach

FluxCD or ArgoCD for Kubernetes

For Kubernetes deployments, GitOps tools can manage infrastructure changes through Git repositories.

Basic FluxCD Configuration

# flux-system/kustomization.yaml
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
  - mixcore/deployment.yaml
  - mixcore/service.yaml
  - mixcore/ingress.yaml
  - mixcore/database.yaml

CI/CD Integration

GitHub Actions Example

name: 'Terraform'

on:
  push:
    branches: [ main ]
  pull_request:

jobs:
  terraform:
    name: 'Terraform'
    runs-on: ubuntu-latest

    steps:
    - name: Checkout
      uses: actions/checkout@v3

    - name: Setup Terraform
      uses: hashicorp/setup-terraform@v2

    - name: Terraform Init
      run: terraform init
      
    - name: Terraform Plan
      run: terraform plan

    - name: Terraform Apply
      if: github.ref == 'refs/heads/main' && github.event_name == 'push'
      run: terraform apply -auto-approve

Best Practices

  1. State Management

    • Use remote state storage
    • Enable state locking
    • Implement state versioning
  2. Security

    • Use secret management tools
    • Store sensitive variables securely
    • Implement least privilege access
  3. Modularization

    • Create reusable modules
    • Separate concerns (network, database, application)
    • Use environment-specific configurations
  4. Testing

    • Implement automated testing
    • Validate changes before applying
    • Use tools like Terratest or Checkov
  5. Documentation

    • Document infrastructure design
    • Include diagrams and architecture decisions
    • Document module interfaces and requirements

Infrastructure Change Workflow

  1. Development: Create or modify infrastructure code
  2. Code Review: Peer review changes
  3. Automated Testing: Run linting and validation tests
  4. Plan and Approve: Review the planned changes
  5. Apply: Apply changes to test environment
  6. Verification: Verify functionality
  7. Production Deployment: Apply to production

Next Steps

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