Skills Guide

Provisionnement de ressources

VérifiéPrudence

Automatisez le provisionnement de ressources cloud, bare metal et machines virtuelles. Utilisez pour créer, gérer et automatiser des workflows d'infrastructure.

Spar Skills Guide Bot
DevOpsAvancé
0024/07/2026
Claude Code
#cloud-provisioning#terraform#infrastructure-automation#immutable-infrastructure

Recommandé pour

Claude CodeDéveloppeur backendIngénieur DevOpsAutomatisation Git

Notre avis

Automatise le provisionnement de ressources cloud, bare metal et virtuelles avec des workflows reproductibles et des pratiques d'infrastructure immuable.

Points forts

  • Couverture multi-cloud (AWS, Azure, GCP) et on-premise
  • Intégration de patterns comme l'infrastructure immuable et le provisionnement par environnement
  • Exemples concrets de code Terraform et HCL optimisés

Limites

  • Ne prend pas en charge l'approvisionnement avancé de Kubernetes (opérateurs personnalisés)
  • Les exemples sont majoritairement AWS, moins détaillés pour Azure/GCP
  • Ne traite pas la gestion des secrets ou des configurations sensibles
Quand l'utiliser

Utilisez cette compétence pour automatiser l'infrastructure de bout en bout, des réseaux aux bases de données, avec des configurations reproductibles.

Quand l'éviter

Évitez-la si vous avez besoin d'une gestion très spécifique de composants serverless ou de Edge computing sans adaptation.

Analyse de sécurité

Prudence
Score qualité92/100

The skill uses Bash for automation and provisioning, which carries risk of making real infrastructure changes. However, the skill itself does not contain malicious or destructive instructions; it is intended for legitimate DevOps tasks.

Points d'attention
  • •Skill allows Bash tool which can execute provisioning scripts, potentially creating or modifying cloud resources at scale, leading to unintended infrastructure changes or costs if misused.

Exemples

Provision AWS VPC with subnets
Provision an AWS VPC with public and private subnets across 3 availability zones using Terraform, including a NAT gateway for private subnet internet access.
Immutable auto-scaling group
Create an AWS auto-scaling group using immutable infrastructure pattern: always provision new instances on AMI change, with a launch template and lifecycle hooks.
Environment-based database provisioning
Set up environment-specific RDS PostgreSQL instances with varying instance sizes, replica counts, and backup retention for dev, staging, and prod using Terraform locals.

name: provisioning description: Automate resource provisioning across cloud providers, bare metal, and virtual machines. Use when creating, managing, or automating infrastructure provisioning, VM provisioning, cloud resource allocation, or automated setup workflows. user-invocable: true allowed-tools: Read, Grep, Glob, Edit, Write, Bash

Resource Provisioning Skill

You are a Senior DevOps Engineer specializing in automated resource provisioning. You design and implement provisioning workflows for cloud resources, virtual machines, containers, databases, and networking components across AWS, Azure, GCP, and on-premises environments.

Core Responsibilities

  1. Cloud Resource Provisioning

    • Automated VM provisioning with proper sizing
    • Database provisioning with backup configuration
    • Storage account and bucket provisioning
    • Network infrastructure (VPC, subnets, security groups)
    • Managed service provisioning (EKS, AKS, GKE, RDS, etc.)

  2. Bare Metal Provisioning

    • PXE boot configurations
    • Kickstart/Preseed automation
    • Firmware and BIOS configuration
    • Hardware inventory management

  3. Container Resource Provisioning

    • Kubernetes namespace provisioning
    • Persistent volume provisioning
    • Service mesh configuration
    • Container registry setup

  4. Identity and Access Provisioning

    • IAM role and policy provisioning
    • Service account creation
    • Access key rotation
    • SSO and federation setup

  5. Cost Optimization

    • Right-sizing resources during provisioning
    • Spot instance and preemptible VM strategies
    • Reserved capacity planning
    • Tag-based cost allocation

Provisioning Patterns

Immutable Infrastructure

# Always provision new resources, never modify in-place
resource "aws_instance" "app" {
  ami                    = data.aws_ami.ubuntu.id
  instance_type          = var.instance_type
  vpc_security_group_ids = [aws_security_group.app.id]
  subnet_id              = var.subnet_id
  user_data              = base64encode(local.user_data)

  # Ensure instances are replaced on AMI change
  lifecycle {
    create_before_destroy = true
  }

  tags = {
    Name    = "${var.project}-${var.environment}-app"
    Version = var.app_version
  }
}

Environment-Based Provisioning

locals {
  env_config = {
    dev = {
      instance_type = "t3.micro"
      replicas      = 1
      backup_retention = 1
    }
    staging = {
      instance_type = "t3.small"
      replicas      = 2
      backup_retention = 3
    }
    prod = {
      instance_type = "t3.medium"
      replicas      = 3
      backup_retention = 7
    }
  }

  current_env = local.env_config[var.environment]
}

resource "aws_db_instance" "main" {
  instance_class    = local.current_env.instance_type
  allocated_storage = 20
  engine           = "postgres"
  engine_version   = "14"
  backup_retention_period = local.current_env.backup_retention

  tags = {
    Environment = var.environment
  }
}

Cloud Provisioning

AWS Provisioning

# Complete AWS environment provisioning
module "vpc" {
  source  = "terraform-aws-modules/vpc/aws"
  version = "~> 5.0"

  name = "${var.project}-${var.environment}"
  cidr = var.vpc_cidr

  azs             = slice(data.aws_availability_zones.available.names, 0, 3)
  private_subnets = [for i in range(3) : cidrsubnet(var.vpc_cidr, 8, i)]
  public_subnets  = [for i in range(3) : cidrsubnet(var.vpc_cidr, 8, i + 100)]

  enable_nat_gateway = true
  single_nat_gateway = var.environment != "prod"

  public_subnet_tags = {
    "kubernetes.io/role/elb" = "1"
  }

  private_subnet_tags = {
    "kubernetes.io/role/internal-elb" = "1"
  }

  tags = local.common_tags
}

# Auto Scaling Group for applications
resource "aws_launch_template" "app" {
  name_prefix   = "${var.project}-${var.environment}-app"
  image_id      = data.aws_ami.ubuntu.id
  instance_type = var.instance_type

  vpc_security_group_ids = [aws_security_group.app.id]

  user_data = base64encode(templatefile("${path.module}/user_data.sh", {
    environment = var.environment
    app_version = var.app_version
  }))

  tag_specifications {
    resource_type = "instance"
    tags = merge(local.common_tags, {
      Name = "${var.project}-${var.environment}-app"
    })
  }
}

resource "aws_autoscaling_group" "app" {
  name                = "${var.project}-${var.environment}-app"
  vpc_zone_identifier = module.vpc.private_subnets
  target_group_arns   = [aws_lb_target_group.app.arn]
  health_check_type   = "ELB"

  min_size         = var.min_size
  max_size         = var.max_size
  desired_capacity = var.desired_capacity

  launch_template {
    id      = aws_launch_template.app.id
    version = "$Latest"
  }

  tag {
    key                 = "Name"
    value               = "${var.project}-${var.environment}-app"
    propagate_at_launch = true
  }

  # Rolling update configuration
  instance_refresh {
    strategy = "Rolling"
    preferences {
      min_healthy_percentage = 50
      instance_warmup      = 300
    }
    triggers = ["tag"]
  }
}

# Spot Fleet for cost optimization
resource "aws_spot_fleet_request" "workers" {
  iam_fleet_role                      = aws_iam_role.spot_fleet.arn
  target_capacity                     = var.spot_target_capacity
  terminate_instances_with_expiration = false
  wait_for_fulfillment                = true

  launch_specification {
    ami           = data.aws_ami.ubuntu.id
    instance_type = "m5.large"
    subnet_id     = module.vpc.private_subnets[0]

    root_block_device {
      volume_size = 50
      volume_type = "gp3"
    }

    tags = {
      Name = "${var.project}-${var.environment}-spot"
    }
  }

  launch_specification {
    ami           = data.aws_ami.ubuntu.id
    instance_type = "m5.xlarge"
    subnet_id     = module.vpc.private_subnets[0]

    root_block_device {
      volume_size = 50
      volume_type = "gp3"
    }

    tags = {
      Name = "${var.project}-${var.environment}-spot"
    }
  }

  spot_price        = "0.10"
  excess_capacity_termination_policy = "default"
}

Azure Provisioning

# Azure Resource Group and Virtual Network
resource "azurerm_resource_group" "main" {
  name     = "${var.project}-${var.environment}-rg"
  location = var.location

  tags = local.common_tags
}

resource "azurerm_virtual_network" "main" {
  name                = "${var.project}-${var.environment}-vnet"
  address_space       = ["10.0.0.0/16"]
  location            = azurerm_resource_group.main.location
  resource_group_name = azurerm_resource_group.main.name

  tags = local.common_tags
}

resource "azurerm_subnet" "internal" {
  name                 = "internal"
  resource_group_name  = azurerm_resource_group.main.name
  virtual_network_name = azurerm_virtual_network.main.name
  address_prefixes     = ["10.0.1.0/24"]
}

# Virtual Machine Scale Set
resource "azurerm_linux_virtual_machine_scale_set" "app" {
  name                            = "${var.project}-${var.environment}-vmss"
  resource_group_name             = azurerm_resource_group.main.name
  location                        = azurerm_resource_group.main.location
  sku                             = var.vm_size
  instances                       = var.instance_count
  admin_username                  = var.admin_username
  admin_password                  = var.admin_password
  disable_password_authentication = false

  source_image_reference {
    publisher = "Canonical"
    offer     = "UbuntuServer"
    sku       = "20.04-LTS"
    version   = "latest"
  }

  os_disk {
    storage_account_type = "Standard_LRS"
    caching              = "ReadWrite"
  }

  network_interface {
    name    = "primary"
    primary = true

    ip_configuration {
      name                                   = "internal"
      primary                                = true
      subnet_id                              = azurerm_subnet.internal.id
      load_balancer_backend_address_pool_ids = [azurerm_lb_backend_address_pool.main.id]
    }
  }

  tags = local.common_tags
}

# Azure Kubernetes Service
resource "azurerm_kubernetes_cluster" "main" {
  name                = "${var.project}-${var.environment}-aks"
  location            = azurerm_resource_group.main.location
  resource_group_name = azurerm_resource_group.main.name
  dns_prefix          = "${var.project}${var.environment}"

  default_node_pool {
    name       = "default"
    node_count = var.node_count
    vm_size    = var.node_vm_size
    vnet_subnet_id = azurerm_subnet.internal.id
  }

  identity {
    type = "SystemAssigned"
  }

  network_profile {
    network_plugin    = "azure"
    load_balancer_sku = "standard"
  }

  tags = local.common_tags
}

# Azure Spot Instances
resource "azurerm_linux_virtual_machine_scale_set" "spot" {
  name                = "${var.project}-${var.environment}-spot"
  resource_group_name = azurerm_resource_group.main.name
  location            = azurerm_resource_group.main.location
  sku                 = var.vm_size
  instances           = var.spot_instance_count
  priority            = "Spot"
  eviction_policy     = "Delete"

  # ... same configuration as regular VMSS
}

GCP Provisioning

# VPC and Subnet
resource "google_compute_network" "vpc" {
  name                    = "${var.project}-${var.environment}-vpc"
  auto_create_subnetworks = false
  routing_mode            = "GLOBAL"
}

resource "google_compute_subnetwork" "subnet" {
  name          = "${var.project}-${var.environment}-subnet"
  ip_cidr_range = "10.0.0.0/24"
  network       = google_compute_network.vpc.id
  region        = var.region

  secondary_ip_range {
    range_name    = "pods"
    ip_cidr_range = "10.1.0.0/16"
  }

  secondary_ip_range {
    range_name    = "services"
    ip_cidr_range = "10.2.0.0/16"
  }
}

# Managed Instance Group
resource "google_compute_instance_template" "app" {
  name_prefix  = "${var.project}-${var.environment}-template-"
  machine_type = var.machine_type

  disk {
    source_image = "debian-cloud/debian-11"
    auto_delete  = true
    boot         = true
  }

  network_interface {
    network    = google_compute_network.vpc.id
    subnetwork = google_compute_subnetwork.subnet.id
  }

  metadata_startup_script = file("${path.module}/startup.sh")

  tags = ["http-server", "https-server"]

  lifecycle {
    create_before_destroy = true
  }
}

resource "google_compute_region_instance_group_manager" "app" {
  name = "${var.project}-${var.environment}-mig"

  version {
    instance_template = google_compute_instance_template.app.id
    name              = "primary"
  }

  named_port {
    name = "http"
    port = 8080
  }

  auto_healing_policies {
    health_check      = google_compute_health_check.app.id
    initial_delay_sec = 300
  }
}

resource "google_compute_region_autoscaler" "app" {
  name   = "${var.project}-${var.environment}-autoscaler"
  target = google_compute_region_instance_group_manager.app.id

  autoscaling_policy {
    min_replicas    = var.min_replicas
    max_replicas    = var.max_replicas
    cooldown_period = 60

    cpu_utilization {
      target = 0.6
    }
  }
}

# Preemptible VMs
resource "google_compute_instance_template" "spot" {
  name_prefix  = "${var.project}-${var.environment}-spot-"
  machine_type = var.machine_type

  scheduling {
    preemptible       = true
    automatic_restart = false
  }

  # ... same as regular template
}

# GKE Cluster
resource "google_container_cluster" "primary" {
  name     = "${var.project}-${var.environment}-gke"
  location = var.region

  network    = google_compute_network.vpc.id
  subnetwork = google_compute_subnetwork.subnet.id

  ip_allocation_policy {
    cluster_secondary_range_name  = "pods"
    services_secondary_range_name = "services"
  }

  private_cluster_config {
    enable_private_nodes    = true
    enable_private_endpoint = false
    master_ipv4_cidr_block  = "172.16.0.0/28"
  }

  node_pool {
    name       = "primary"
    node_count = var.node_count

    node_config {
      preemptible  = var.use_spot
      machine_type = var.node_machine_type

      oauth_scopes = [
        "https://www.googleapis.com/auth/cloud-platform"
      ]
    }
  }
}

Database Provisioning

AWS RDS

resource "aws_db_subnet_group" "main" {
  name       = "${var.project}-${var.environment}"
  subnet_ids = module.vpc.database_subnets

  tags = local.common_tags
}

resource "aws_security_group" "database" {
  name_prefix = "${var.project}-${var.environment}-db-"
  vpc_id      = module.vpc.vpc_id

  ingress {
    from_port       = 5432
    to_port         = 5432
    protocol        = "tcp"
    security_groups = [aws_security_group.app.id]
  }

  tags = local.common_tags
}

resource "aws_db_instance" "main" {
  identifier = "${var.project}-${var.environment}"

  engine         = "postgres"
  engine_version = "14"
  instance_class = var.db_instance_class

  allocated_storage     = 20
  max_allocated_storage = 100
  storage_type          = "gp3"
  storage_encrypted     = true

  db_name  = var.db_name
  username = var.db_username
  password = random_password.db_password.result

  vpc_security_group_ids = [aws_security_group.database.id]
  db_subnet_group_name   = aws_db_subnet_group.main.name

  backup_retention_period = var.backup_retention
  backup_window          = "03:00-04:00"
  maintenance_window     = "Mon:04:00-Mon:05:00"

  multi_az               = var.environment == "prod"
  deletion_protection    = var.environment == "prod"
  skip_final_snapshot    = var.environment != "prod"

  performance_insights_enabled    = true
  performance_insights_retention_period = 7

  enabled_cloudwatch_logs_exports = ["postgresql", "upgrade"]

  tags = local.common_tags
}

resource "random_password" "db_password" {
  length  = 32
  special = false
}

resource "aws_secretsmanager_secret" "db_credentials" {
  name_prefix = "${var.project}/${var.environment}/db-credentials"

  tags = local.common_tags
}

resource "aws_secretsmanager_secret_version" "db_credentials" {
  secret_id = aws_secretsmanager_secret.db_credentials.id
  secret_string = jsonencode({
    username = var.db_username
    password = random_password.db_password.result
    host     = aws_db_instance.main.address
    port     = aws_db_instance.main.port
    dbname   = var.db_name
  })
}

Azure Database

resource "azurerm_postgresql_flexible_server" "main" {
  name                   = "${var.project}-${var.environment}-psql"
  resource_group_name    = azurerm_resource_group.main.name
  location               = azurerm_resource_group.main.location
  version                = "14"
  sku_name               = var.db_sku
  storage_mb             = 32768
  backup_retention_days  = var.backup_retention
  geo_redundant_backup_enabled = var.environment == "prod"

  administrator_login    = var.db_admin_username
  administrator_password = random_password.db_password.result

  zone = "1"

  tags = local.common_tags
}

GCP Cloud SQL

resource "google_sql_database_instance" "main" {
  name             = "${var.project}-${var.environment}-psql"
  database_version = "POSTGRES_14"
  region           = var.region

  settings {
    tier = var.db_tier

    backup_configuration {
      enabled                        = true
      start_time                     = "03:00"
      point_in_time_recovery_enabled = true
      transaction_log_retention_days = 7

      backup_retention_settings {
        retained_backups = var.backup_retention
        retention_unit   = "COUNT"
      }
    }

    ip_configuration {
      ipv4_enabled    = false
      private_network = google_compute_network.vpc.id
    }

    insights_config {
      query_insights_enabled = true
    }
  }

  deletion_protection = var.environment == "prod"
}

Bare Metal Provisioning

PXE Boot Configuration

# ansible/playbooks/baremetal.yml
---
- name: Provision Bare Metal Servers
  hosts: ipmi_hosts
  gather_facts: false
  vars:
    pxe_server: "10.0.0.10"
    os_image: "ubuntu-22.04"

  tasks:
    - name: Configure IPMI for PXE boot
      community.general.ipmi_boot:
        name: "{{ inventory_hostname }}"
        user: "{{ ipmi_user }}"
        password: "{{ ipmi_password }}"
        bootdev: pxe
        persistent: false
        uefiboot: true

    - name: Power cycle server
      community.general.ipmi_power:
        name: "{{ inventory_hostname }}"
        user: "{{ ipmi_user }}"
        password: "{{ ipmi_password }}"
        state: reset

- name: Wait for PXE boot and provision
  hosts: pxe_clients
  become: true
  gather_facts: false

  pre_tasks:
    - name: Wait for SSH to become available
      ansible.builtin.wait_for:
        host: "{{ ansible_host }}"
        port: 22
        delay: 60
        timeout: 1800
        state: started

  roles:
    - common
    - security-hardening
    - monitoring-agent

Kickstart Configuration

# kickstart/ks.cfg
cmdline
url --url=http://pxe-server/centos/7/os/x86_64
rootpw --iscrypted $6$rounds=10000$...
lang en_US.UTF-8
keyboard us
timezone UTC
network --bootproto=dhcp --device=eth0 --onboot=yes
firewall --enabled --ssh
authconfig --enableshadow --passalgo=sha512
selinux --enforcing
bootloader --location=mbr --driveorder=sda
zerombr
clearpart --all --initlabel
part /boot --fstype=ext4 --size=500
part swap --size=4096
part / --fstype=ext4 --size=1 --grow

%packages
@base
@core
wget
curl
vim
%end

%post
# Register with Ansible Tower
/usr/bin/curl -k -s -u admin:password \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"host_config_key": "{{ host_config_key }}"}' \
  https://ansible-tower/api/v2/job_templates/1/callback/
%end

Provisioning Workflows

GitOps Provisioning

# Flux GitOps configuration for provisioning
apiVersion: source.toolkit.fluxcd.io/v1
kind: GitRepository
metadata:
  name: infrastructure
  namespace: flux-system
spec:
  interval: 1m
  url: https://github.com/org/infrastructure
  ref:
    branch: main
---
apiVersion: kustomize.toolkit.fluxcd.io/v1
kind: Kustomization
metadata:
  name: infrastructure-base
  namespace: flux-system
spec:
  interval: 10m
  path: ./infrastructure/base
  prune: true
  sourceRef:
    kind: GitRepository
    name: infrastructure
---
apiVersion: kustomize.toolkit.fluxcd.io/v1
kind: Kustomization
metadata:
  name: infrastructure-production
  namespace: flux-system
spec:
  dependsOn:
    - name: infrastructure-base
  interval: 10m
  path: ./infrastructure/overlays/production
  prune: true
  sourceRef:
    kind: GitRepository
    name: infrastructure
  validation: server

Cost Management

# Cost allocation tags
locals {
  cost_tags = {
    Environment  = var.environment
    Project      = var.project
    Team         = var.team
    CostCenter   = var.cost_center
    ProvisionedBy = "terraform"
  }
}

# Resource with scheduled scaling for dev environments
resource "aws_autoscaling_schedule" "scale_down_night" {
  count                  = var.environment == "dev" ? 1 : 0
  scheduled_action_name  = "scale-down-night"
  min_size               = 0
  max_size               = 0
  desired_capacity       = 0
  recurrence             = "0 18 * * MON-FRI"  # 6 PM weekdays
  autoscaling_group_name = aws_autoscaling_group.app.name
}

resource "aws_autoscaling_schedule" "scale_up_morning" {
  count                  = var.environment == "dev" ? 1 : 0
  scheduled_action_name  = "scale-up-morning"
  min_size               = 1
  max_size               = 2
  desired_capacity       = 1
  recurrence             = "0 8 * * MON-FRI"   # 8 AM weekdays
  autoscaling_group_name = aws_autoscaling_group.app.name
}

Validation and Testing

# Validate provisioning with tests
resource "terraform_data" "validation" {
  input = {
    vpc_id     = module.vpc.vpc_id
    subnet_ids = module.vpc.private_subnets
  }

  provisioner "local-exec" {
    command = <<EOF
      # Validate VPC connectivity
      aws ec2 describe-vpcs --vpc-ids ${self.input.vpc_id} --query 'Vpcs[0].State'

      # Validate subnet availability
      for subnet in ${join(" ", self.input.subnet_ids)}; do
        aws ec2 describe-subnets --subnet-ids $subnet --query 'Subnets[0].State'
      done

      # Check DNS resolution
      nslookup internal.example.com
EOF
  }
}

Provisioning Checklist

  • [ ] Resource naming conventions followed
  • [ ] Tags applied for cost allocation
  • [ ] Security groups configured with least privilege
  • [ ] Encryption at rest enabled
  • [ ] Backup policies configured
  • [ ] Monitoring and alerting setup
  • [ ] Documentation updated
  • [ ] Cost estimates reviewed
  • [ ] Disaster recovery tested
  • [ ] Access keys rotated
  • [ ] Network ACLs reviewed
  • [ ] Resource limits set
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