chore: Added example for creating a VM with multiple interfaces (#175)

* Added example for creating a VM with multiple interfaces

* Deleted white space

* fixed region tag

Author: betsy-lichtenberg

examples/compute_instance/multiple_interfaces/README.md

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+# Instance with multiple interfaces
+
+This example creates a VM instance with multiple network interfaces.
+The subnets must be in the same region as the VM.
+
+<!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| project\_id | The Google Cloud project ID | `string` | n/a | yes |
+| subnet\_1 | Self link to a subnetwork in the same region as the VM. | `string` | n/a | yes |
+| subnet\_2 | Self link to a subnetwork in the same region as the VM. | `string` | n/a | yes |
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| instance\_self\_link | The URI of the instance rule  being created |
+| network\_name\_1 | The name of the VPC network where the VM's first network interface is created |
+| network\_name\_2 | The name of the VPC network where the VM's second network interface is created |
+| project\_id | Google Cloud project ID |
+
+<!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->

examples/compute_instance/multiple_interfaces/main.tf

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+/**
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+terraform {
+  required_providers {
+    google = {
+      version = ">= 3.45.0"
+    }
+    null = {
+      version = ">= 2.1.0"
+    }
+  }
+}
+
+# [START compute_vm_with_multiple_interface]
+resource "google_compute_instance" "default" {
+  project      = var.project_id # Replace with your project ID in quotes
+  zone         = "us-central1-b"
+  name         = "backend-instance"
+  machine_type = "e2-medium"
+  boot_disk {
+    initialize_params {
+      image = "debian-cloud/debian-9"
+    }
+  }
+  network_interface {
+    subnetwork = var.subnet_1 # Replace with self link to a subnetwork in quotes
+    network_ip = "10.0.0.14"
+  }
+  network_interface {
+    subnetwork = var.subnet_2 # Replace with self link to a subnetwork in quotes
+    network_ip = "10.10.20.14"
+  }
+}
+# [END compute_vm_with_multiple_interface]

examples/compute_instance/multiple_interfaces/outputs.tf

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+/**
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+output "project_id" {
+  value       = google_compute_instance.default.project
+  description = "Google Cloud project ID"
+}
+
+output "instance_self_link" {
+  value       = google_compute_instance.default.self_link
+  description = "The URI of the instance rule  being created"
+}
+
+output "network_name_1" {
+  value       = google_compute_instance.default.network_interface[0].network
+  description = "The name of the VPC network where the VM's first network interface is created"
+}
+
+output "network_name_2" {
+  value       = google_compute_instance.default.network_interface[1].network
+  description = "The name of the VPC network where the VM's second network interface is created"
+}

examples/compute_instance/multiple_interfaces/variables.tf

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+/**
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+variable "project_id" {
+  description = "The Google Cloud project ID"
+  type        = string
+}
+
+variable "subnet_1" {
+  description = "Self link to a subnetwork in the same region as the VM."
+  type        = string
+}
+
+variable "subnet_2" {
+  description = "Self link to a subnetwork in the same region as the VM."
+  type        = string
+}

examples/compute_instance/multiple_interfaces/versions.tf

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+/**
+ * Copyright 2018 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+terraform {
+  required_version = ">=0.12.6"
+}