Configuration Reference - GCP

The Mesosphere Universal Installer supports a wide range of inputs/variables to add to your main.tf and enable you to customize your DC/OS cluster to your needs. These inputs/variables include everything from specifying the operating system (CentOS, Ubuntu, RHEL, Oracle Linux) to setting the garbage collection time of your DC/OS cluster.

The Terraform-based Universal Installer is designed to be flexible with configuration. Below is an example of a custom main.tf that provisions a customized DC/OS 1.13.0 cluster on Google Cloud Platform.

provider "google" {
  version = "~> 2.0"
  region  = "us-west1"
}

# Used to determine your public IP for forwarding rules
data "http" "whatismyip" {
  url = "http://whatismyip.akamai.com/"
}

module "dcos" {
  source  = "dcos-terraform/dcos/gcp"
  version = "~> 0.2.0"

  providers = {
    google = "google"
  }

  cluster_name        = "my-dcos-demo"
  ssh_public_key_file = "<path-to-public-key-file>"
  admin_ips           = ["${data.http.whatismyip.body}/32"]

  num_masters        = 3
  num_private_agents = 2
  num_public_agents  = 1

  dcos_version = "1.13.3"

  # Enterprise users uncomment this section and comment out below
  # dcos_variant              = "ee"
  # dcos_license_key_contents = "${file("./license.txt")}"
  # Make sure to set your credentials if you do not want the default EE
  # dcos_superuser_password_hash = "${file("./dcos_superuser_password_hash.sha512")}
  # dcos_superuser_username = "admin"

  dcos_variant = "open"

  dcos_cluster_docker_credentials_enabled =  "true"
  dcos_cluster_docker_credentials_write_to_etc = "true"
  dcos_cluster_docker_credentials_dcos_owned = "false"
  dcos_cluster_docker_registry_url = "https://index.docker.io"
  dcos_use_proxy = "yes"
  dcos_http_proxy = "example.com"
  dcos_https_proxy = "example.com"
  dcos_no_proxy = <<EOF
  # YAML
   - "internal.net"
   - "169.254.169.254"
  EOF
  dcos_overlay_network = <<EOF
  # YAML
      vtep_subnet: 44.128.0.0/20
      vtep_mac_oui: 70:B3:D5:00:00:00
      overlays:
        - name: dcos
          subnet: 12.0.0.0/8
          prefix: 26
  EOF
  dcos_rexray_config = <<EOF
  # YAML
    rexray:
      loglevel: warn
      modules:
        default-admin:
          host: tcp://127.0.0.1:61003
      storageDrivers:
      - ec2
      volume:
        unmount:
          ignoreusedcount: true
  EOF
  dcos_cluster_docker_credentials = <<EOF
  # YAML
    auths:
      'https://index.docker.io/v1/':
        auth: Ze9ja2VyY3licmljSmVFOEJrcTY2eTV1WHhnSkVuVndjVEE=
  EOF
}

Supported DC/OS Versions

Currently, the Universal Installer defaults to 1.11.4 when using v0.1.0 modules and 1.13.3 for v0.2.0 modules. The following versions of DC/OS are currently supported. It is always recommended to specify a version.

dcos_version: "1.13.3"

Supported Instance (Node) OS Versions

The default instance OS is currently centos_7.5, and will be applied unless specified in the configuration. The following instance operating systems are supported by DC/OS. To change the default OS, the following paramaters can be changed:

dcos_instance_os = "centos_7.5"

Here is a list of all the variables that are currently supported on the Universal Installer and available for you to customize your cluster.

Inputs

Outputs