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
hashicorp · Jun 13, 2017 · b97603f · b97603f
1 parent 48e0052
commit b97603f
Show file tree

Hide file tree

Showing 7 changed files with 729 additions and 0 deletions.
diff --git a/examples/wordpress-mysql-replication/README.md b/examples/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.
diff --git a/examples/wordpress-mysql-replication/deploy.ci.sh b/examples/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=$PASSWORD;"
diff --git a/examples/wordpress-mysql-replication/deploy.mac.sh b/examples/wordpress-mysql-replication/deploy.mac.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -o errexit -o nounset
+
+if docker -v; then
+
+  # generate a unique string for CI deployment
+  export KEY=$(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)$(cat /dev/urandom | env LC_CTYPE=C tr -cd '0-9' | head -c 2)
+
+/bin/sh ./deploy.ci.sh
+
+else
+  echo "Docker is used to run terraform commands, please install before run:  https://docs.docker.com/docker-for-mac/install/"
+fi
diff --git a/examples/wordpress-mysql-replication/main.tf b/examples/wordpress-mysql-replication/main.tf
@@ -0,0 +1,244 @@
+# provider "azurerm" {
+#   subscription_id = "${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 ${var.unique_prefix}wordpress"
+ }
+SETTINGS
+}
diff --git a/examples/wordpress-mysql-replication/outputs.tf b/examples/wordpress-mysql-replication/outputs.tf
@@ -0,0 +1,23 @@
+output "resource_group" {
+  value = "${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"
+}