provider/azurerm: Example of Wordpress MySql Replication (#15260)

* 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

* merge of CI config

* fixed grammar in readme

* prep for PR

* 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.

* 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

* initial commit; in progress

* in progress

* in progress; encryption fails

* in progress

* deploys successfully locally

* clean up; deploy typo fixed

* merging hashi master into this branch

* troubleshooting deploy

* added missing vars to deploy script

* updated README, outputs, and added graph

* simplified outputs

* provisions locally

* cleaned up vars

* fixed chart on README

* prepping for pr

* fixed merge conflict

* initial commit

* provisions locally; but azuremysql.sh script fails

* commented out provider

* commenting out provider vars

* tf fmt / uncommented Ext - will fail

* testing other examples

* changed os version for script compatability; changed command

* removed ssh from output (no nsg)

* changed travis to test only this topic's dir

* added nsg

* testing encrypt-running-linux

* fixed IPs and validation

* cleanup merge conflicts

* updated validation cmd; reverted non-topic ci changes

* reverting to Hashicorp's .travis.yml

* removing return line

* returned return lines to travis.yml

* return lines

* return lines

* travis

examples/azure-wordpress-mysql-replication/README.md

@@ -0,0 +1,41 @@
+# Deploys a WordPress web site backed by MySQL master-slave replication
+
+This Terraform template was based on [this](https://github.com/Azure/azure-quickstart-templates/tree/master/wordpress-mysql-replication) Azure Quickstart Template. Changes to the ARM template that may have occurred since the creation of this example may not be reflected here.
+
+This template deploys a WordPress site in Azure backed by MySQL replication with one master and one slave server.  It has the following capabilities:
+
+- Installs and configures GTID based MySQL replication on CentOS 6
+- Deploys a load balancer in front of the 2 MySQL VMs 
+- MySQL, SSH, and MySQL probe ports are exposed through the load balancer using Network Security Group rules.  
+- WordPress accesses MySQL through the load balancer.
+- Configures an http based health probe for each MySQL instance that can be used to monitor MySQL health.
+- WordPress deployment starts immediately after MySQL deployment finishes.
+- Details about MySQL management, including failover, can be found [here](https://github.com/Azure/azure-quickstart-templates/tree/master/mysql-replication).
+
+If you would like to leverage an existing VNET, then please see the [documentation here](https://www.terraform.io/docs/import/index.html) to learn about importing existing resources into Terraform and bringing them under state management by this template. To import your existing VNET, you may use this command.
+
+```
+terraform import azurerm_virtual_network.testNetwork /subscriptions/<YOUR-SUB-ID-HERE>/resourceGroups/<existing-resource-group-name>/providers/Microsoft.Network/virtualNetworks/<existing-vnet-name>
+```
+
+## main.tf
+The `main.tf` file contains the resources necessary for the MySql replication deployment that will be created. It also contains the Azure Resource Group definition and any defined variables.
+
+## website.tf
+The `website.tf` contains an `azurerm_template_deployment` that will deploy the Wordpress website.
+
+## outputs.tf
+This data is outputted when `terraform apply` is called, and can be queried using the `terraform output` command.
+
+## provider.tf
+You may leave the provider block in the `main.tf`, as it is in this template, or you can create a file called `provider.tf` and add it to your `.gitignore` file.
+
+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.
+
+## terraform.tfvars
+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.
+
+If you are committing this template to source control, please insure that you add this file to your `.gitignore` file.
+
+## variables.tf
+The `variables.tf` file contains all of the input parameters that the user can specify when deploying this Terraform template.

examples/azure-wordpress-mysql-replication/deploy.ci.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+
+set -o errexit -o nounset
+
+docker run --rm -it \
+  -e ARM_CLIENT_ID \
+  -e ARM_CLIENT_SECRET \
+  -e ARM_SUBSCRIPTION_ID \
+  -e ARM_TENANT_ID \
+  -v $(pwd):/data \
+  --workdir=/data \
+  --entrypoint "/bin/sh" \
+  hashicorp/terraform:light \
+  -c "/bin/terraform get; \
+      /bin/terraform validate; \
+      /bin/terraform plan -out=out.tfplan \
+        -var resource_group=$KEY \
+        -var unique_prefix=$KEY \
+        -var site_name=$KEY \
+        -var dns_name=$KEY \
+        -var hosting_plan_name=$KEY \
+        -var mysql_root_password=$PASSWORD \
+        -var mysql_replication_password=$PASSWORD \
+        -var mysql_probe_password=$PASSWORD \
+        -var vm_admin_username=$KEY \
+        -var vm_admin_password=$PASSWORD; \
+      /bin/terraform apply out.tfplan"
+
+# cleanup deployed azure resources via azure-cli
+docker run --rm -it \
+  azuresdk/azure-cli-python \
+  sh -c "az login --service-principal -u $ARM_CLIENT_ID -p $ARM_CLIENT_SECRET --tenant $ARM_TENANT_ID > /dev/null; \
+         az vm list -g $KEY; \
+         az webapp show -n $KEY -g $KEY"
+
+# cleanup deployed azure resources via terraform
+docker run --rm -it \
+  -e ARM_CLIENT_ID \
+  -e ARM_CLIENT_SECRET \
+  -e ARM_SUBSCRIPTION_ID \
+  -e ARM_TENANT_ID \
+  -v $(pwd):/data \
+  --workdir=/data \
+  --entrypoint "/bin/sh" \
+  hashicorp/terraform:light \
+  -c "/bin/terraform destroy -force \
+    -var resource_group=$KEY \
+    -var unique_prefix=$KEY \
+    -var site_name=$KEY \
+    -var dns_name=$KEY \
+    -var hosting_plan_name=$KEY \
+    -var mysql_root_password=$PASSWORD \
+    -var mysql_replication_password=$PASSWORD \
+    -var mysql_probe_password=$PASSWORD \
+    -var vm_admin_username=$KEY \
+    -var vm_admin_password=$PASSWORD;"

examples/azure-wordpress-mysql-replication/deploy.mac.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -o errexit -o nounset
+
+if docker -v; then
+
+  # generate a unique string for CI deployment
+  export KEY=$(cat /dev/urandom | env LC_CTYPE=C tr -cd 'a-z' | head -c 12)
+  export PASSWORD=$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)
+
+/bin/sh ./deploy.ci.sh
+
+else
+  echo "Docker is used to run terraform commands, please install before run:  https://docs.docker.com/docker-for-mac/install/"
+fi

examples/azure-wordpress-mysql-replication/main.tf

@@ -0,0 +1,244 @@
+# provider "azurerm" {
+#   subscription_id = "${var.subscription_id}"
+#   client_id       = "${var.client_id}"
+#   client_secret   = "${var.client_secret}"
+#   tenant_id       = "${var.tenant_id}"
+# }
+
+# ********************** MYSQL REPLICATION ********************** #
+
+resource "azurerm_resource_group" "rg" {
+  name     = "${var.resource_group}"
+  location = "${var.location}"
+}
+
+# ********************** VNET / SUBNET ********************** #
+resource "azurerm_virtual_network" "vnet" {
+  name                = "${var.virtual_network_name}"
+  resource_group_name = "${azurerm_resource_group.rg.name}"
+  location            = "${azurerm_resource_group.rg.location}"
+  address_space       = ["${var.vnet_address_prefix}"]
+}
+
+resource "azurerm_subnet" "db_subnet" {
+  name                      = "${var.db_subnet_name}"
+  virtual_network_name      = "${azurerm_virtual_network.vnet.name}"
+  resource_group_name       = "${azurerm_resource_group.rg.name}"
+  network_security_group_id = "${azurerm_network_security_group.nsg.id}"
+  address_prefix            = "${var.db_subnet_address_prefix}"
+  depends_on                = ["azurerm_virtual_network.vnet"]
+}
+
+# **********************  STORAGE ACCOUNTS ********************** #
+resource "azurerm_storage_account" "stor" {
+  name                = "${var.unique_prefix}${var.storage_account_name}"
+  resource_group_name = "${azurerm_resource_group.rg.name}"
+  location            = "${azurerm_resource_group.rg.location}"
+  account_type        = "${var.storage_account_type}"
+}
+
+# **********************  NETWORK SECURITY GROUP ********************** #
+resource "azurerm_network_security_group" "nsg" {
+  name                = "${var.unique_prefix}-nsg"
+  resource_group_name = "${azurerm_resource_group.rg.name}"
+  location            = "${azurerm_resource_group.rg.location}"
+
+  security_rule {
+    name                       = "allow-ssh"
+    description                = "Allow SSH"
+    priority                   = 100
+    direction                  = "Inbound"
+    access                     = "Allow"
+    protocol                   = "Tcp"
+    source_port_range          = "*"
+    destination_port_range     = "22"
+    source_address_prefix      = "Internet"
+    destination_address_prefix = "*"
+  }
+
+ security_rule {
+    name                       = "MySQL"
+    description                = "MySQL"
+    priority                   = 110
+    direction                  = "Inbound"
+    access                     = "Allow"
+    protocol                   = "Tcp"
+    source_port_range          = "*"
+    destination_port_range     = "3306"
+    source_address_prefix      = "*"
+    destination_address_prefix = "*"
+  }
+}
+
+# **********************  PUBLIC IP ADDRESSES ********************** #
+resource "azurerm_public_ip" "pip" {
+  name                         = "${var.public_ip_name}"
+  location                     = "${azurerm_resource_group.rg.location}"
+  resource_group_name          = "${azurerm_resource_group.rg.name}"
+  public_ip_address_allocation = "Static"
+  domain_name_label            = "${var.dns_name}"
+}
+
+# **********************  AVAILABILITY SET ********************** #
+resource "azurerm_availability_set" "availability_set" {
+  name                = "${var.dns_name}-set"
+  location            = "${azurerm_resource_group.rg.location}"
+  resource_group_name = "${azurerm_resource_group.rg.name}"
+}
+
+# **********************  NETWORK INTERFACES ********************** #
+resource "azurerm_network_interface" "nic" {
+  name                      = "${var.nic_name}${count.index}"
+  location                  = "${azurerm_resource_group.rg.location}"
+  resource_group_name       = "${azurerm_resource_group.rg.name}"
+  network_security_group_id = "${azurerm_network_security_group.nsg.id}"
+  count                     = "${var.node_count}"
+  depends_on                = ["azurerm_virtual_network.vnet", "azurerm_public_ip.pip", "azurerm_lb.lb"]
+
+  ip_configuration {
+    name                                    = "ipconfig${count.index}"
+    subnet_id                               = "${azurerm_subnet.db_subnet.id}"
+    private_ip_address_allocation           = "Static"
+    private_ip_address                      = "10.0.1.${count.index + 4}"
+    load_balancer_backend_address_pools_ids = ["${azurerm_lb_backend_address_pool.backend_pool.id}"]
+
+    load_balancer_inbound_nat_rules_ids = [
+      "${element(azurerm_lb_nat_rule.NatRule0.*.id, count.index)}",
+      "${element(azurerm_lb_nat_rule.MySQLNatRule0.*.id, count.index)}",
+      "${element(azurerm_lb_nat_rule.ProbeNatRule0.*.id, count.index)}",
+    ]
+  }
+}
+
+# **********************  LOAD BALANCER ********************** #
+resource "azurerm_lb" "lb" {
+  name                = "${var.dns_name}-lb"
+  location            = "${azurerm_resource_group.rg.location}"
+  resource_group_name = "${azurerm_resource_group.rg.name}"
+  depends_on          = ["azurerm_public_ip.pip"]
+
+  frontend_ip_configuration {
+    name                 = "${var.dns_name}-sshIPCfg"
+    public_ip_address_id = "${azurerm_public_ip.pip.id}"
+  }
+}
+
+resource "azurerm_lb_backend_address_pool" "backend_pool" {
+  resource_group_name = "${azurerm_resource_group.rg.name}"
+  loadbalancer_id     = "${azurerm_lb.lb.id}"
+  name                = "${var.dns_name}-ilbBackendPool"
+}
+
+# **********************  LOAD BALANCER INBOUND NAT RULES ********************** #
+resource "azurerm_lb_nat_rule" "NatRule0" {
+  name                           = "${var.dns_name}-NatRule-${count.index}"
+  resource_group_name            = "${azurerm_resource_group.rg.name}"
+  loadbalancer_id                = "${azurerm_lb.lb.id}"
+  protocol                       = "tcp"
+  frontend_port                  = "6400${count.index + 1}"
+  backend_port                   = 22
+  frontend_ip_configuration_name = "${var.dns_name}-sshIPCfg"
+  count                          = "${var.node_count}"
+  depends_on                     = ["azurerm_lb.lb"]
+}
+
+resource "azurerm_lb_nat_rule" "MySQLNatRule0" {
+  name                           = "${var.dns_name}-MySQLNatRule-${count.index}"
+  resource_group_name            = "${azurerm_resource_group.rg.name}"
+  loadbalancer_id                = "${azurerm_lb.lb.id}"
+  protocol                       = "tcp"
+  frontend_port                  = "330${count.index + 6}"
+  backend_port                   = 3306
+  frontend_ip_configuration_name = "${var.dns_name}-sshIPCfg"
+  count                          = "${var.node_count}"
+  depends_on                     = ["azurerm_lb.lb"]
+}
+
+resource "azurerm_lb_nat_rule" "ProbeNatRule0" {
+  name                           = "${var.dns_name}-ProbeNatRule-${count.index}"
+  resource_group_name            = "${azurerm_resource_group.rg.name}"
+  loadbalancer_id                = "${azurerm_lb.lb.id}"
+  protocol                       = "tcp"
+  frontend_port                  = "920${count.index}"
+  backend_port                   = 9200
+  frontend_ip_configuration_name = "${var.dns_name}-sshIPCfg"
+  count                          = "${var.node_count}"
+  depends_on                     = ["azurerm_lb.lb"]
+}
+
+# ********************** VIRTUAL MACHINES ********************** #
+resource "azurerm_virtual_machine" "vm" {
+  name                  = "${var.dns_name}${count.index}"
+  resource_group_name   = "${azurerm_resource_group.rg.name}"
+  location              = "${azurerm_resource_group.rg.location}"
+  vm_size               = "${var.vm_size}"
+  network_interface_ids = ["${element(azurerm_network_interface.nic.*.id, count.index)}"]
+  count                 = "${var.node_count}"
+  availability_set_id   = "${azurerm_availability_set.availability_set.id}"
+  depends_on            = ["azurerm_availability_set.availability_set", "azurerm_network_interface.nic", "azurerm_storage_account.stor"]
+
+  storage_image_reference {
+    publisher = "${var.image_publisher}"
+    offer     = "${var.image_offer}"
+    sku       = "${var.os_version}"
+    version   = "latest"
+  }
+
+  storage_os_disk {
+    name          = "osdisk${count.index}"
+    vhd_uri       = "https://${azurerm_storage_account.stor.name}.blob.core.windows.net/vhds/${var.dns_name}${count.index}-osdisk.vhd"
+    create_option = "FromImage"
+    caching       = "ReadWrite"
+  }
+
+  os_profile {
+    computer_name  = "${var.dns_name}${count.index}"
+    admin_username = "${var.vm_admin_username}"
+    admin_password = "${var.vm_admin_password}"
+  }
+
+  storage_data_disk {
+    name          = "datadisk1"
+    vhd_uri       = "https://${azurerm_storage_account.stor.name}.blob.core.windows.net/vhds/${var.dns_name}${count.index}-datadisk1.vhd"
+    disk_size_gb  = "1000"
+    create_option = "Empty"
+    lun           = 0
+  }
+
+  storage_data_disk {
+    name          = "datadisk2"
+    vhd_uri       = "https://${azurerm_storage_account.stor.name}.blob.core.windows.net/vhds/${var.dns_name}${count.index}-datadisk2.vhd"
+    disk_size_gb  = "1000"
+    create_option = "Empty"
+    lun           = 1
+  }
+
+  os_profile_linux_config {
+    disable_password_authentication = false
+  }
+}
+
+resource "azurerm_virtual_machine_extension" "setup_mysql" {
+  name                       = "${var.dns_name}-${count.index}-setupMySQL"
+  resource_group_name        = "${azurerm_resource_group.rg.name}"
+  location                   = "${azurerm_resource_group.rg.location}"
+  virtual_machine_name       = "${element(azurerm_virtual_machine.vm.*.name, count.index)}"
+  publisher                  = "Microsoft.Azure.Extensions"
+  type                       = "CustomScript"
+  type_handler_version       = "2.0"
+  auto_upgrade_minor_version = true
+  count                      = "${var.node_count}"
+  depends_on                 = ["azurerm_virtual_machine.vm", "azurerm_lb_nat_rule.ProbeNatRule0"]
+
+  settings = <<SETTINGS
+{
+  "fileUris": ["${var.artifacts_location}${var.azuremysql_script}"]
+}
+SETTINGS
+
+  protected_settings = <<SETTINGS
+ {
+   "commandToExecute": "bash azuremysql.sh ${count.index + 1} 10.0.1.${count.index + 4} ${var.artifacts_location}${var.mysql_cfg_file_path} '${var.mysql_replication_password}' '${var.mysql_root_password}' '${var.mysql_probe_password}' 10.0.1.4 ${var.unique_prefix}wordpress"
+ }
+SETTINGS
+}

examples/azure-wordpress-mysql-replication/outputs.tf

@@ -0,0 +1,23 @@
+output "resource_group" {
+  value = "${var.resource_group}"
+}
+
+output "fqdn" {
+  value = "${azurerm_public_ip.pip.fqdn}"
+}
+
+output "azure_website" {
+  value = "http://${var.dns_name}.azurewebsites.net"
+}
+
+output "ip_address" {
+  value = "${azurerm_public_ip.pip.ip_address}"
+}
+
+output "ssh_command_master" {
+  value = "ssh ${var.vm_admin_username}@${azurerm_public_ip.pip.ip_address} -p 64001"
+}
+
+output "ssh_command_slave" {
+  value = "ssh ${var.vm_admin_username}@${azurerm_public_ip.pip.ip_address} -p 64002"
+}

examples/azure-wordpress-mysql-replication/variables.tf

@@ -0,0 +1,210 @@
+# variable "client_id" {}
+# variable "client_secret" {}
+# variable "tenant_id" {}
+# variable "subscription_id" {}
+
+variable "resource_group" {
+  description = "Resource group name into which your Spark and Cassandra deployment will go."
+}
+
+variable "location" {
+  description = "The location/region where the virtual network is created. Changing this forces a new resource to be created."
+  default     = "southcentralus"
+}
+
+variable "unique_prefix" {
+  description = "This prefix is used for names which need to be globally unique."
+}
+
+variable "vm_admin_username" {
+  description = "Specify an admin username that should be used to login to the VM. Min length: 1"
+}
+
+variable "vm_admin_password" {
+  description = "Specify an admin password that should be used to login to the VM. Must be between 6-72 characters long and must satisfy at least 3 of password complexity requirements from the following: 1) Contains an uppercase character 2) Contains a lowercase character 3) Contains a numeric digit 4) Contains a special character"
+}
+
+variable "os_image_publisher" {
+  description = "name of the publisher of the image (az vm image list)"
+  default     = "OpenLogic"
+}
+
+variable "os_image_offer" {
+  description = "the name of the offer (az vm image list)"
+  default     = "CentOS"
+}
+
+variable "os_version" {
+  description = "version of the image to apply (az vm image list)"
+  default     = "6.5"
+}
+
+variable "api_version" {
+  default = "2015-06-15"
+}
+
+variable "artifacts_location" {
+  description = "The base URI where artifacts required by this template are located."
+  default     = "https://raw.githubusercontent.com/Azure/azure-quickstart-templates/master/wordpress-mysql-replication/"
+}
+
+variable "azuremysql_script" {
+  description = "The directory and script which will configure MySQL"
+  default     = "scripts/azuremysql.sh"
+}
+
+variable "mysql_cfg_file_path" {
+  description = "The directory and script which will be called in the extension for the MySQL config"
+  default     = "scripts/my.cnf.template"
+}
+
+variable "site_name" {
+  description = "wordpress site name"
+}
+
+variable "hosting_plan_name" {
+  description = "website host plan"
+}
+
+variable "sku" {
+  description = "Website sku. Allowed values: Basic, Standard, Premium"
+  default     = "Standard"
+}
+
+variable "worker_size" {
+  description = "Website worker size. Allowed values: 0, 1, 2"
+  default     = "1"
+}
+
+variable "dns_name" {
+  description = "Connect to your cluster using dnsName.location.cloudapp.azure.com"
+}
+
+variable "public_ip_name" {
+  description = "public IP name for MySQL loadbalancer"
+  default     = "mysqlIP01"
+}
+
+variable "mysql_root_password" {
+  description = "mysql root user password"
+}
+
+variable "mysql_replication_password" {
+  description = "mysql replication user password"
+}
+
+variable "mysql_probe_password" {
+  description = "mysql probe password"
+}
+
+variable "vm_size" {
+  description = "size for the VMs"
+  default     = "Standard_D2"
+}
+
+variable "storage_account_type" {
+  description = "Storage account type for the cluster"
+  default     = "Standard_LRS"
+}
+
+variable "virtual_network_name" {
+  description = "New or Existing Virtual network name for the cluster"
+  default     = "mysqlvnet"
+}
+
+variable "vnet_new_or_existing" {
+  description = "Identifies whether to use new or existing Virtual Network"
+  default     = "new"
+}
+
+variable "vnet_existing_resource_group_name" {
+  description = "If using existing VNet, specifies the resource group for the existing VNet"
+  default     = ""
+}
+
+variable "db_subnet_name" {
+  description = "subnet name for the MySQL nodes"
+  default     = "default"
+}
+
+variable "vnet_address_prefix" {
+  description = "IP address in CIDR for virtual network"
+  default     = "10.0.0.0/16"
+}
+
+variable "db_subnet_address_prefix" {
+  description = "IP address in CIDR for db subnet"
+  default     = "10.0.1.0/24"
+}
+
+variable "db_subnet_start_address" {
+  description = "Start IP address for the VMs in db subnet"
+  default     = "10.0.1.4"
+}
+
+variable "image_publisher" {
+  description = "publisher for the VM OS image"
+  default     = "OpenLogic"
+}
+
+variable "image_offer" {
+  description = "VM OS name"
+  default     = "CentOS"
+}
+
+variable "image_sku" {
+  description = "VM OS version. Allowed values: 6.5, 6.6"
+  default     = "6.5"
+}
+
+variable "mysql_front_end_port_0" {
+  description = "MySQL public port"
+  default     = "3306"
+}
+
+variable "mysql_front_end_port_1" {
+  description = "MySQL public port"
+  default     = "3307"
+}
+
+variable "ssh_nat_rule_front_end_port_0" {
+  description = "public ssh port for VM1"
+  default     = "64001"
+}
+
+variable "ssh_nat_rule_front_end_port_1" {
+  description = "public ssh port for VM2"
+  default     = "64002"
+}
+
+variable "mysql_probe_port_0" {
+  description = "MySQL public port master"
+  default     = "9200"
+}
+
+variable "mysql_probe_port_1" {
+  description = "MySQL public port slave"
+  default     = "9201"
+}
+
+variable "storage_account_name" {
+  description = "Name of the Storage Account"
+  default     = "storagesa"
+}
+
+variable "template_api_version" {
+  default = "2015-01-01"
+}
+
+variable "wpdbname" {
+  default = "wordpress"
+}
+
+variable "node_count" {
+  default = 2
+}
+
+variable "nic_name" {
+  description = "Name of the Network Interface"
+  default     = "nic"
+}

examples/azure-wordpress-mysql-replication/website.tf

@@ -0,0 +1,140 @@
+# ********************** WEBSITE DEPLOYMENT TEMPLATE ********************** #
+
+resource "azurerm_template_deployment" "website" {
+  name                = "website"
+  resource_group_name = "${azurerm_resource_group.rg.name}"
+  depends_on          = ["azurerm_virtual_machine_extension.setup_mysql"]
+
+  template_body = <<DEPLOY
+{  
+   "$schema":"http://schema.management.azure.com/schemas/2014-04-01-preview/deploymentTemplate.json#",
+   "contentVersion":"1.0.0.0",
+   "parameters":{  
+      "siteName":{  
+         "type":"string",
+         "defaultValue":"${var.site_name}"
+      },
+      "hostingPlanName":{  
+         "type":"string",
+         "defaultValue":"${var.hosting_plan_name}"
+      },
+      "sku":{  
+         "type":"string",
+         "allowedValues":[  
+            "Free",
+            "Shared",
+            "Basic",
+            "Standard",
+            "Premium"
+         ],
+         "defaultValue":"${var.sku}"
+      },
+      "workerSize":{  
+         "type":"string",
+         "allowedValues":[  
+            "0",
+            "1",
+            "2"
+         ],
+         "defaultValue":"${var.worker_size}"
+      },
+      "dbServer":{  
+         "type":"string",
+         "defaultValue":"${var.dns_name}.${azurerm_resource_group.rg.location}.cloudapp.azure.com:${var.mysql_front_end_port_0}"
+      },
+      "dbName":{  
+         "type":"string",
+         "defaultValue":"${var.unique_prefix}wordpress"
+      },
+      "dbAdminPassword":{  
+         "type":"string",
+         "defaultValue":"${var.mysql_root_password}"
+      }
+   },
+   "variables":{  
+      "connectionString":"[concat('Database=', parameters('dbName'), ';Data Source=', parameters('dbServer'), ';User Id=admin;Password=', parameters('dbAdminPassword'))]",
+      "repoUrl":"https://github.com/azureappserviceoss/wordpress-azure",
+      "branch":"master",
+      "workerSize":"[parameters('workerSize')]",
+      "sku":"[parameters('sku')]",
+      "hostingPlanName":"[parameters('hostingPlanName')]"
+   },
+   "resources":[  
+      {  
+         "apiVersion":"2014-06-01",
+         "name":"[variables('hostingPlanName')]",
+         "type":"Microsoft.Web/serverfarms",
+         "location":"[resourceGroup().location]",
+         "properties":{  
+            "name":"[variables('hostingPlanName')]",
+            "sku":"[variables('sku')]",
+            "workerSize":"[variables('workerSize')]",
+            "hostingEnvironment":"",
+            "numberOfWorkers":0
+         }
+      },
+      {  
+         "apiVersion":"2015-02-01",
+         "name":"[parameters('siteName')]",
+         "type":"Microsoft.Web/sites",
+         "location":"[resourceGroup().location]",
+         "tags":{  
+            "[concat('hidden-related:', '/subscriptions/', subscription().subscriptionId,'/resourcegroups/', resourceGroup().name, '/providers/Microsoft.Web/serverfarms/', variables('hostingPlanName'))]":"empty"
+         },
+         "dependsOn":[  
+            "[concat('Microsoft.Web/serverfarms/', variables('hostingPlanName'))]"
+         ],
+         "properties":{  
+            "name":"[parameters('siteName')]",
+            "serverFarmId":"[concat('/subscriptions/', subscription().subscriptionId,'/resourcegroups/', resourceGroup().name, '/providers/Microsoft.Web/serverfarms/', variables('hostingPlanName'))]",
+            "hostingEnvironment":""
+         },
+         "resources":[  
+            {  
+               "apiVersion":"2015-04-01",
+               "name":"connectionstrings",
+               "type":"config",
+               "dependsOn":[  
+                  "[concat('Microsoft.Web/Sites/', parameters('siteName'))]"
+               ],
+               "properties":{  
+                  "defaultConnection":{  
+                     "value":"[variables('connectionString')]",
+                     "type":"MySQL"
+                  }
+               }
+            },
+            {  
+               "apiVersion":"2015-04-01",
+               "name":"web",
+               "type":"config",
+               "dependsOn":[  
+                  "[concat('Microsoft.Web/Sites/', parameters('siteName'))]"
+               ],
+               "properties":{  
+                  "phpVersion":"5.6"
+               }
+            },
+            {  
+               "apiVersion":"2015-08-01",
+               "name":"web",
+               "type":"sourcecontrols",
+               "dependsOn":[  
+                  "[resourceId('Microsoft.Web/Sites', parameters('siteName'))]",
+                  "[concat('Microsoft.Web/Sites/', parameters('siteName'), '/config/connectionstrings')]",
+                  "[concat('Microsoft.Web/Sites/', parameters('siteName'), '/config/web')]"
+               ],
+               "properties":{  
+                  "RepoUrl":"[variables('repoUrl')]",
+                  "branch":"[variables('branch')]",
+                  "IsManualIntegration":true
+               }
+            }
+         ]
+      }      
+   ]
+}
+DEPLOY
+
+  deployment_mode = "Incremental"
+}