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Crea un informe de validación de IaC de muestra

En este instructivo, se describe cómo puedes verificar que tu infraestructura como código (IaC) no incumpla las políticas de tu organización ni los detectores de Security Health Analytics.

Prepare el entorno

Sign in to your Google Cloud account. If you're new to Google Cloud, create an account to evaluate how our products perform in real-world scenarios. New customers also get $300 in free credits to run, test, and deploy workloads.

Install the Google Cloud CLI.

Si usas un proveedor de identidad externo (IdP), primero debes acceder a gcloud CLI con tu identidad federada.

Para inicializar gcloud CLI, ejecuta el siguiente comando:

gcloud init

Create or select a Google Cloud project.

Roles required to select or create a project

Select a project: Selecting a project doesn't require a specific IAM role—you can select any project that you've been granted a role on.
Create a project: To create a project, you need the Project Creator (roles/resourcemanager.projectCreator), which contains the resourcemanager.projects.create permission. Learn how to grant roles.

Create a Google Cloud project:
```
gcloud projects create PROJECT_ID
```
Replace PROJECT_ID with a name for the Google Cloud project you are creating.
Select the Google Cloud project that you created:
```
gcloud config set project PROJECT_ID
```
Replace PROJECT_ID with your Google Cloud project name.

Verify that billing is enabled for your Google Cloud project.

Enable the Security posture service and Security Command Center management APIs:

Roles required to enable APIs

To enable APIs, you need the Service Usage Admin IAM role (roles/serviceusage.serviceUsageAdmin), which contains the serviceusage.services.enable permission. Learn how to grant roles.

gcloud services enable securityposture.googleapis.com  securitycentermanagement.googleapis.com

Install the Google Cloud CLI.

Si usas un proveedor de identidad externo (IdP), primero debes acceder a gcloud CLI con tu identidad federada.

Para inicializar gcloud CLI, ejecuta el siguiente comando:

gcloud init

Create or select a Google Cloud project.

Roles required to select or create a project

Select a project: Selecting a project doesn't require a specific IAM role—you can select any project that you've been granted a role on.
Create a project: To create a project, you need the Project Creator (roles/resourcemanager.projectCreator), which contains the resourcemanager.projects.create permission. Learn how to grant roles.

Create a Google Cloud project:
```
gcloud projects create PROJECT_ID
```
Replace PROJECT_ID with a name for the Google Cloud project you are creating.
Select the Google Cloud project that you created:
```
gcloud config set project PROJECT_ID
```
Replace PROJECT_ID with your Google Cloud project name.

Verify that billing is enabled for your Google Cloud project.

Enable the Security posture service and Security Command Center management APIs:

Roles required to enable APIs

To enable APIs, you need the Service Usage Admin IAM role (roles/serviceusage.serviceUsageAdmin), which contains the serviceusage.services.enable permission. Learn how to grant roles.

gcloud services enable securityposture.googleapis.com  securitycentermanagement.googleapis.com

Copia el número del proyecto. Necesitarás el número de proyecto para establecer el recurso de destino cuando implementes la postura.
```
gcloud projects describe PROJECT_ID
```
Inicializa Terraform mediante este comando:
```
terraform init
```

Crea e implementa una postura

En Cloud Shell, inicia el editor de Cloud Shell. Para iniciar el editor, haz clic en Abrir editor en la barra de herramientas de la ventana de Cloud Shell.
Crea un archivo YAML llamado example-standard.yaml.
Pega el siguiente código en tu archivo:

name: organizations/ORGANIZATION_ID/locations/global/postures/example-standard
state: ACTIVE
policySets:
- policies:
  - constraint:
      orgPolicyConstraintCustom:
        customConstraint:
          actionType: ALLOW
          condition: "resource.initialNodeCount == 3"
          description: Set initial node count to be exactly 3.
          displayName: fixedNodeCount
          methodTypes:
          - CREATE
          name: organizations/ORGANIZATION_ID/customConstraints/custom.fixedNodeCount
          resourceTypes:
          - container.googleapis.com/NodePool
        policyRules:
        - enforce: true
    policyId: fixedNodeCount
  - constraint:
      securityHealthAnalyticsCustomModule:
        config:
          customOutput: {}
          description: Set MTU for a network to be exactly 1000.
          predicate:
            expression: "!(resource.mtu == 1000)"
          recommendation: Only create networks whose MTU is 1000.
          resourceSelector:
            resourceTypes:
            - compute.googleapis.com/Network
          severity: HIGH
        displayName: fixedMTU
        moduleEnablementState: ENABLED
    policyId: fixedMTU
  - constraint:
      securityHealthAnalyticsModule:
        moduleEnablementState: ENABLED
        moduleName: BUCKET_POLICY_ONLY_DISABLED
    policyId: bucket_policy_only_disabled
  - constraint:
      securityHealthAnalyticsModule:
        moduleEnablementState: ENABLED
        moduleName: BUCKET_LOGGING_DISABLED
    policyId: bucket_logging_disabled
  policySetId: policySet1

Reemplaza ORGANIZATION_ID por el ID de tu organización.

En Cloud Shell, crea la postura:

gcloud scc postures create organizations/ORGANIZATION_ID/locations/global/postures/example-standard --posture-from-file=example-standard.yaml

Copia el ID de revisión de la postura que genera el comando.

Implementa la postura en tu proyecto:

gcloud scc posture-deployments create organizations/ORGANIZATION_ID/locations/global/postureDeployments/example-standard \
--posture-name=organizations/ORGANIZATION_ID/locations/global/postures/example-standard \
--posture-revision-id="POSTURE_REVISION_ID" \
--target-resource=projects/PROJECT_NUMBER

Reemplaza lo siguiente:

ORGANIZATION_ID: Es el ID de tu organización.
POSTURE REVISION_ID: Es el ID de revisión de la postura que copiaste.
PROJECT_NUMBER: Es el número de tu proyecto.

Crea el archivo de Terraform y valídalo

En Cloud Shell, inicia el editor de Cloud Shell.
Crea un archivo de Terraform llamado main.tf.

Pega el siguiente código en tu archivo:

terraform {
  required_providers {
    google = {
      source  = "hashicorp/google"
    }
  }
}

provider "google" {
  region  = "us-central1"
  zone    = "us-central1-c"
}

resource "google_compute_network" "example_network"{
  name                            = "example-network-1"
  delete_default_routes_on_create = false
  auto_create_subnetworks         = false
  routing_mode                    = "REGIONAL"
  mtu                             = 100
  project                         = "PROJECT_ID"
}

resource "google_container_node_pool" "example_node_pool" {
  name               = "example-node-pool-1"
  cluster            = "example-cluster-1"
  project            = "PROJECT_ID"
  initial_node_count = 2

  node_config {
    preemptible  = true
    machine_type = "e2-medium"
  }
}

resource "google_storage_bucket" "example_bucket" {
  name          = "example-bucket-1"
  location      = "EU"
  force_destroy = true

  project = "PROJECT_ID"

  uniform_bucket_level_access = false
}

Reemplaza PROJECT_ID por el ID del proyecto que creaste.

En Cloud Shell, crea el archivo de plan de Terraform y conviértelo al formato JSON:
```
terraform plan -out main.plan
terraform show -json main.plan > mainplan.json
```
Crea el informe de validación de IaC para mainplan.json:
```
gcloud scc iac-validation-reports create organizations/ORGANIZATION_ID/locations/global --tf-plan-file=mainplan.json
```
Este comando devuelve un informe de validación de IaC que describe los siguientes incumplimientos:
- El valor de mtu para example_network no es 1,000.
- El initial_node_count de example_node_pool no es 3.
- El example_bucket no tiene habilitado el acceso uniforme a nivel del bucket.
- El example_bucket no tiene habilitado el registro.

Resuelve incumplimientos

En Cloud Shell, inicia el editor de Cloud Shell.

Actualiza el archivo main.tf con los siguientes cambios:

terraform {
  required_providers {
    google = {
      source  = "hashicorp/google"
    }
  }
}

provider "google" {
  region  = "us-central1"
  zone    = "us-central1-c"
}

resource "google_compute_network" "example_network"{
  name                            = "example-network-1"
  delete_default_routes_on_create = false
  auto_create_subnetworks         = false
  routing_mode                    = "REGIONAL"
  mtu                             = 1000
  project                         = "PROJECT_ID"
}

resource "google_container_node_pool" "example_node_pool" {
  name               = "example-node-pool-1"
  cluster            = "example-cluster-1"
  project            = "PROJECT_ID"
  initial_node_count = 3

  node_config {
    preemptible  = true
    machine_type = "e2-medium"
  }
}

resource "google_storage_bucket" "example_bucket" {
  name          = "example-bucket-1"
  location      = "EU"
  force_destroy = true

  project = "PROJECT_ID"
  uniform_bucket_level_access = true

  logging {
    log_bucket   = "my-unique-logging-bucket" // Create a separate bucket for logs
    log_object_prefix = "tf-logs/"             // Optional prefix for better structure
  }
}

Reemplaza PROJECT_ID por el ID del proyecto que creaste.

En Cloud Shell, crea el archivo de plan de Terraform y conviértelo al formato JSON:
```
terraform plan -out main.plan
terraform show -json main.plan > mainplan.json
```

Vuelve a crear el informe de validación de IaC para mainplan.json:

gcloud scc iac-validation-reports create organizations/ORGANIZATION_ID/locations/global --tf-plan-file=mainplan.json