provider/azurerm: Add example of traffic manager (#14337)
* initial commit - 101-vm-from-user-image * changed branch name * not deploying - storage problems * provisions vm but image not properly prepared * storage not correct * provisions properly * changed main.tf to azuredeploy.tf * added tfvars and info for README * tfvars ignored and corrected file ext * added CI config; added sane defaults for variables; updated deployment script, added mac specific deployment for local testing * deploy.sh to be executable * executable deploy files * added CI files; changed vars * prep for PR * removal of old folder * prep for PR * wrong args for travis * more PR prep * updated README * commented out variables in terraform.tfvars * Topic 101 vm from user image (#2) * initial commit - 101-vm-from-user-image * added tfvars and info for README * added CI config; added sane defaults for variables; updated deployment script, added mac specific deployment for local testing * prep for PR * added new template * oops, left off master * prep for PR * correct repository for destination * renamed scripts to be more intuitive; added check for docker * merge vm simple; vm from image * initial commit * deploys locally * updated deploy * consolidated deploy and after_deploy into a single script; simplified ci process; added os_profile_linux_config * added terraform show * changed to allow http & https (like ARM tmplt) * changed host_name & host_name variable desc * added az cli check * on this branch, only build test_dir; master will aggregate all the examples * merge master * added new constructs/naming for deploy scripts, etc. * suppress az login output * suppress az login output * forgot about line breaks * breaking build as an example * fixing broken build example * work in progress * merge of CI config * fixed grammar in readme * prep for PR * deploys locally * deploys locally * small README change * took out armviz button and minor README changes * changed host_name * fixed merge conflicts * changed host_name variable * updating Hashicorp's changes to merged simple linux branch * updating files to merge w/master and prep for Hashicorp pr * Revert "updating files to merge w/master and prep for Hashicorp pr" This reverts commit b850cd5d2a858eff073fc5a1097a6813d0f8b362. * Revert "updating Hashicorp's changes to merged simple linux branch" This reverts commit dbaf8d14a9cdfcef0281919671357f6171ebd4e6. * added provider to main.tf * took out armviz button; resolved conflicts in .travis.yml * removing vm from user image example from this branch * removed old branch * azure-2-vms-loadbalancer-lbrules (#13) * initial commit * need to change lb_rule & nic * deploys locally * updated README * updated travis and deploy scripts for Hari's repo * renamed deploy script * clean up * prep for PR * updated readme * fixing conflict in .travis.yml * add CI build tag * azure-traffic-manager-vm (#17) adding example of azure traffic manager * prepped for Hashicorp PR * merging with hashicorp master
This commit is contained in:
Annie Hedgpeth
Tom Harvey
parent
51b1c7b084
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# Azure Traffic Manager with virtual machines
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This Terraform template was based on [this](https://github.com/Azure/azure-quickstart-templates/tree/master/201-traffic-manager-vm) Azure Quickstart Template. Changes to the ARM template that may have occurred since the creation of this example may not be reflected here.
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This template shows how to create an Azure Traffic Manager profile to load-balance across a couple of Azure virtual machines. Each endpoint has an equal weight but different weights can be specified to distribute load non-uniformly.
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See also:
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- <a href="https://azure.microsoft.com/en-us/documentation/articles/traffic-manager-routing-methods/">Traffic Manager routing methods</a> for details of the different routing methods available.
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- <a href="https://msdn.microsoft.com/en-us/library/azure/mt163581.aspx">Create or update a Traffic Manager profile</a> for details of the JSON elements relating to a Traffic Manager profile.
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## main.tf
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The `main.tf` file contains the actual resources that will be deployed. It also contains the Azure Resource Group definition and any defined variables.
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## outputs.tf
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This data is outputted when `terraform apply` is called, and can be queried using the `terraform output` command.
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## provider.tf
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Azure requires that an application is added to Azure Active Directory to generate the `client_id`, `client_secret`, and `tenant_id` needed by Terraform (`subscription_id` can be recovered from your Azure account details). Please go [here](https://www.terraform.io/docs/providers/azurerm/) for full instructions on how to create this to populate your `provider.tf` file.
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## terraform.tfvars
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If a `terraform.tfvars` file is present in the current directory, Terraform automatically loads it to populate variables. We don't recommend saving usernames and password to version control, but you can create a local secret variables file and use `-var-file` to load it.
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If you are committing this template to source control, please insure that you add this file to your `.gitignore` file.
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## variables.tf
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The `variables.tf` file contains all of the input parameters that the user can specify when deploying this Terraform template.
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#!/bin/bash
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set -o errexit -o nounset
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docker run --rm -it \
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-e ARM_CLIENT_ID \
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-e ARM_CLIENT_SECRET \
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-e ARM_SUBSCRIPTION_ID \
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-e ARM_TENANT_ID \
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-v $(pwd):/data \
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--workdir=/data \
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--entrypoint "/bin/sh" \
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hashicorp/terraform:light \
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-c "/bin/terraform get; \
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/bin/terraform validate; \
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/bin/terraform plan -out=out.tfplan -var dns_name=$KEY -var resource_group=$KEY -var admin_password=$PASSWORD; \
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/bin/terraform apply out.tfplan; \
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/bin/terraform show;"
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# cleanup deployed azure resources via azure-cli
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docker run --rm -it \
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azuresdk/azure-cli-python \
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sh -c "az login --service-principal -u $ARM_CLIENT_ID -p $ARM_CLIENT_SECRET --tenant $ARM_TENANT_ID > /dev/null; \
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az vm show -g $KEY -n rgvm"
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# cleanup deployed azure resources via terraform
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docker run --rm -it \
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-e ARM_CLIENT_ID \
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-e ARM_CLIENT_SECRET \
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-e ARM_SUBSCRIPTION_ID \
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-e ARM_TENANT_ID \
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-v $(pwd):/data \
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--workdir=/data \
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--entrypoint "/bin/sh" \
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hashicorp/terraform:light \
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-c "/bin/terraform destroy -force -var dns_name=$KEY -var resource_group=$KEY -var admin_password=$PASSWORD;"
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#!/bin/bash
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set -o errexit -o nounset
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if docker -v; then
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# generate a unique string for CI deployment
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export KEY=$(cat /dev/urandom | env LC_CTYPE=C tr -cd 'a-z' | head -c 12)
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export PASSWORD=$KEY$(cat /dev/urandom | env LC_CTYPE=C tr -cd 'A-Z' | head -c 2)$(cat /dev/urandom | env LC_CTYPE=C tr -cd '0-9' | head -c 2)
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/bin/sh ./deploy.ci.sh
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else
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echo "Docker is used to run terraform commands, please install before run: https://docs.docker.com/docker-for-mac/install/"
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fi
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# provider "azurerm" {
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# subscription_id = "REPLACE-WITH-YOUR-SUBSCRIPTION-ID"
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# client_id = "REPLACE-WITH-YOUR-CLIENT-ID"
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# client_secret = "REPLACE-WITH-YOUR-CLIENT-SECRET"
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# tenant_id = "REPLACE-WITH-YOUR-TENANT-ID"
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# }
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resource "azurerm_resource_group" "rg" {
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name = "${var.resource_group}"
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location = "${var.location}"
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}
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resource "azurerm_public_ip" "pip" {
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name = "ip${count.index}"
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location = "${var.location}"
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resource_group_name = "${azurerm_resource_group.rg.name}"
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public_ip_address_allocation = "dynamic"
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domain_name_label = "${var.dns_name}${count.index}"
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count = "${var.num_vms}"
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}
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resource "azurerm_virtual_network" "vnet" {
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name = "${var.vnet}"
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location = "${var.location}"
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address_space = ["${var.address_space}"]
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resource_group_name = "${azurerm_resource_group.rg.name}"
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}
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resource "azurerm_subnet" "subnet" {
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name = "${var.subnet_name}"
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virtual_network_name = "${azurerm_virtual_network.vnet.name}"
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resource_group_name = "${azurerm_resource_group.rg.name}"
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address_prefix = "${var.subnet_prefix}"
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}
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resource "azurerm_network_interface" "nic" {
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name = "nic${count.index}"
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location = "${var.location}"
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resource_group_name = "${azurerm_resource_group.rg.name}"
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count = "${var.num_vms}"
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ip_configuration {
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name = "ipconfig${count.index}"
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subnet_id = "${azurerm_subnet.subnet.id}"
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private_ip_address_allocation = "Dynamic"
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public_ip_address_id = "${element(azurerm_public_ip.pip.*.id, count.index)}"
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}
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}
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resource "azurerm_virtual_machine" "vm" {
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name = "vm${count.index}"
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location = "${var.location}"
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resource_group_name = "${azurerm_resource_group.rg.name}"
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vm_size = "${var.vm_size}"
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count = "${var.num_vms}"
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network_interface_ids = ["${element(azurerm_network_interface.nic.*.id, count.index)}"]
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storage_image_reference {
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publisher = "${var.image_publisher}"
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offer = "${var.image_offer}"
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sku = "${var.image_sku}"
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version = "${var.image_version}"
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}
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storage_os_disk {
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name = "osdisk${count.index}"
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create_option = "FromImage"
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}
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os_profile {
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computer_name = "vm${count.index}"
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admin_username = "${var.admin_username}"
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admin_password = "${var.admin_password}"
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}
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os_profile_linux_config {
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disable_password_authentication = false
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}
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}
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resource "azurerm_virtual_machine_extension" "ext" {
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depends_on = ["azurerm_virtual_machine.vm"]
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name = "CustomScript"
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location = "${var.location}"
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resource_group_name = "${azurerm_resource_group.rg.name}"
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virtual_machine_name = "vm${count.index}"
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publisher = "Microsoft.Azure.Extensions"
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type = "CustomScript"
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type_handler_version = "2.0"
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count = "${var.num_vms}"
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auto_upgrade_minor_version = true
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settings = <<SETTINGS
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{
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"commandToExecute": "sudo bash -c 'apt-get update && apt-get -y install apache2' "
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}
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SETTINGS
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}
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resource "azurerm_traffic_manager_profile" "profile" {
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name = "trafficmanagerprofile"
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resource_group_name = "${azurerm_resource_group.rg.name}"
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traffic_routing_method = "Weighted"
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dns_config {
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relative_name = "${azurerm_resource_group.rg.name}"
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ttl = 30
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}
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monitor_config {
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protocol = "http"
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port = 80
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path = "/"
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}
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}
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resource "azurerm_traffic_manager_endpoint" "endpoint" {
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name = "endpoint${count.index}"
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resource_group_name = "${azurerm_resource_group.rg.name}"
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profile_name = "${azurerm_traffic_manager_profile.profile.name}"
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target_resource_id = "${element(azurerm_public_ip.pip.*.id, count.index)}"
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type = "azureEndpoints"
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weight = 1
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count = 3
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}
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output "dns_name" {
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value = "${var.dns_name}"
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}
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variable "resource_group" {
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description = "The name of the resource group in which to create the virtual network, virtual machines, and traffic manager."
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}
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variable "location" {
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description = "The location/region where the virtual network is created. Changing this forces a new resource to be created."
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default = "southcentralus"
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}
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variable "dns_name" {
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description = "Relative DNS name for the traffic manager profile, resulting FQDN will be <uniqueDnsName>.trafficmanager.net, must be globally unique."
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}
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variable "vnet" {
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description = "The name of virtual network"
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default = "vnet"
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}
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variable "num_vms" {
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description = "The number of virtual machines you will provision. This variable is also used for NICs and PIPs in this Terraform script."
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default = "3"
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}
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variable "address_space" {
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description = "The address space that is used by the virtual network. You can supply more than one address space. Changing this forces a new resource to be created."
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default = "10.0.0.0/16"
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}
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variable "subnet_name" {
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description = "The name of the subnet"
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default = "subnet"
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}
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variable "subnet_prefix" {
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description = "The address prefix to use for the subnet"
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default = "10.0.0.0/24"
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}
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variable "vm_size" {
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description = "The size of the virtual machine"
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default = "Standard_D1"
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}
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variable "image_publisher" {
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description = "The name of the publisher of the image (az vm image list)"
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default = "Canonical"
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}
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variable "image_offer" {
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description = "The name of the offer (az vm image list)"
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default = "UbuntuServer"
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}
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variable "image_sku" {
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description = "The Ubuntu version for the VM. This will pick a fully patched image of this given Ubuntu version. Allowed values: 12.04.5-LTS, 14.04.2-LTS, 15.10."
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default = "14.04.2-LTS"
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}
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variable "image_version" {
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description = "the version of the image to apply (az vm image list)"
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default = "latest"
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}
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variable "admin_username" {
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description = "Username for virtual machines"
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default = "vmadmin"
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}
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variable "admin_password" {
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description = "Password for virtual machines"
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}
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