Understanding configurations

A configuration defines the structure of your deployment. You must specify a configuration to create a deployment.

In this step, you will access a configuration that creates a deployment with two Compute Engine VM instances. A VM instance is one of several kinds of resources you can deploy with Deployment Manager.

In this step, you'll examine a configuration for a deployment with two VM instances.

Open the configuration YAML file

Change to the directory you created in Installation and Setup:

cd deploymentmanager-samples/examples/v2/step_by_step_guide/step2_create_a_configuration

Then, open two-vms.yaml:

nano two-vms.yaml   # use your preferred text editor

In the resources section, note that there are two resources: the-first-vm and the-second-vm. Each resource has a name, type, and properties field:

  • name: A name that you define for the resource.

  • type: Specifies what type of resource you're creating. For example, a virtual machine is compute.v1.instance. Similarly, a Cloud SQL
    instance has the type sql.v1beta4.instance.

  • properties: Specifies the properties of the resource. The properties required to create the resource are the same properties required by the resource's API. For example, when you create a Compute Engine virtual machine instance, you must provide a machine type, an image, a network interface, and a boot disk specification.

Set up the configuration file

In two-vms.yaml, replace MY_PROJECT with your project ID.

# Copyright 2016 Google Inc. All rights reserved.
#
# 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.

resources:
- name: the-first-vm
  type: compute.v1.instance
  properties:
    zone: us-central1-f
    machineType: https://www.googleapis.com/compute/v1/projects/MY_PROJECT/zones/us-central1-f/machineTypes/f1-micro
    disks:
    - deviceName: boot
      type: PERSISTENT
      boot: true
      autoDelete: true
      initializeParams:
        sourceImage: https://www.googleapis.com/compute/v1/projects/debian-cloud/global/images/family/debian-9
    networkInterfaces:
    - network: https://www.googleapis.com/compute/v1/projects/MY_PROJECT/global/networks/default
      accessConfigs:
      - name: External NAT
        type: ONE_TO_ONE_NAT
- name: the-second-vm
  type: compute.v1.instance
  properties:
    zone: us-central1-f
    machineType: https://www.googleapis.com/compute/v1/projects/MY_PROJECT/zones/us-central1-f/machineTypes/g1-small
    disks:
    - deviceName: boot
      type: PERSISTENT
      boot: true
      autoDelete: true
      initializeParams:
        sourceImage: https://www.googleapis.com/compute/v1/projects/debian-cloud/global/images/family/debian-9
    networkInterfaces:
    - network: https://www.googleapis.com/compute/v1/projects/MY_PROJECT/global/networks/default
      accessConfigs:
      - name: External NAT
        type: ONE_TO_ONE_NAT

Save your changes

This basic configuration file is all you need to create your first deployment. You declared the resources that you want to create (in this case, two virtual machine instances that had different machine types), and Deployment Manager takes care of creating the resources.

In the next step, you use this configuration to deploy new resources.

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