template-plb-vmss.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "vmSku": {
      "type": "string",
      "defaultValue": "Standard_A1",
      "metadata": {
        "description": "Size of VMs in the VM Scale Set."
      }
    },
    "windowsOSVersion": {
      "type": "string",
      "defaultValue": "2016-Datacenter",
      "allowedValues": [
        "2008-R2-SP1",
        "2012-Datacenter",
        "2012-R2-Datacenter",
        "2016-Datacenter"
      ],
      "metadata": {
        "description": "The Windows version for the VM. This will pick a fully patched image of this given Windows version. Allowed values: 2008-R2-SP1, 2012-Datacenter, 2012-R2-Datacenter & 2016-Datacenter."
      }
    },
    "vmssName": {
      "type": "string",
      "metadata": {
        "description": "String used as a base for naming resources. Must be 3-61 characters in length and globally unique across Azure. A hash is prepended to this string for some resources, and resource-specific information is appended."
      },
      "minLength": 3,
      "maxLength": 61
    },
    "instanceCount": {
      "type": "int",
      "defaultValue": 1,
      "metadata": {
        "description": "Number of VM instances (100 or less)."
      },
      "maxValue": 100
    },
    "adminUsername": {
      "type": "string",
      "defaultValue": "vmssadmin",
      "metadata": {
        "description": "Admin username on all VMs."
      }
    },
    "adminPassword": {
      "type": "securestring",
      "metadata": {
        "description": "Admin password on all VMs."
      }
    },
    "_artifactsLocation": {
      "type": "string",
      "metadata": {
        "description": "The base URI where artifacts required by this template are located. For example, if stored on a public GitHub repo, you'd use the following URI: https://raw.githubusercontent.com/Azure/azure-quickstart-templates/master/201-vmss-windows-webapp-dsc-autoscale."
      },
      "defaultValue": "https://raw.githubusercontent.com/KursLabIgor/azure_training/master"
    },
    "_artifactsLocationSasToken": {
      "type": "securestring",
      "defaultValue": "",
      "metadata": {
        "description": "The sasToken required to access _artifactsLocation.  If your artifacts are stored on a public repo or public storage account you can leave this blank."
      }
    },
    "powershelldscZip": {
      "type": "string",
      "defaultValue": "/DSC/IISInstall.ps1.zip",
      "metadata": {
        "description": "Location of the PowerShell DSC zip file relative to the URI specified in the _artifactsLocation, i.e. /DSC/IISInstall.ps1.zip"
      }
    },
    "webDeployPackage": {
      "type": "string",
      "defaultValue": "/WebDeploy/SqlWebApi.zip",
      "metadata": {
        "description": "Location of the  of the WebDeploy package zip file relative to the URI specified in _artifactsLocation, i.e. /WebDeploy/DefaultASPWebApp.v1.0.zip"
      }
    },
    "powershelldscUpdateTagVersion": {
      "type": "string",
      "defaultValue": "1.0",
      "metadata": {
        "description": "Version number of the DSC deployment. Changing this value on subsequent deployments will trigger the extension to run."
      }
    },
    "existingWebSubnet":{
      "type": "string",
      "metadata": {
        "description": "Exisiting subnet for frontend"
      }
    },
    "existingVnet":{
      "type": "string",
      "metadata": {
        "description": "Exisiting vnet"
      }
    },
    "dbConnectionString":{
      "type": "string",
      "metadata": {
        "description": "Connection String for existing MSSQL server"
      }

    }
  },
  "variables": {
    "namingInfix": "[toLower(substring(concat(parameters('vmssName'), uniqueString(resourceGroup().id)), 0, 9))]",
    "longNamingInfix": "[toLower(parameters('vmssName'))]",
    "publicIPAddressName": "[concat(variables('namingInfix'), 'pip')]",
    "virtualNetworkName": "[parameters('existingVnet')]",
    "subnetWeb": "[parameters('existingWebSubnet')]",
    "loadBalancerName": "[concat(variables('namingInfix'), 'lb')]",
    "publicIPAddressID": "[resourceId('Microsoft.Network/publicIPAddresses',variables('publicIPAddressName'))]",
    "lbProbeID": "[concat(variables('lbID'),'/probes/tcpProbe')]",
    "natPoolName": "[concat(variables('namingInfix'), 'natpool')]",
    "bePoolName": "[concat(variables('namingInfix'), 'bepool')]",
    "lbID": "[resourceId('Microsoft.Network/loadBalancers',variables('loadBalancerName'))]",
    "lbPoolID": "[concat(variables('lbID'),'/backendAddressPools/',variables('bePoolName'))]",
    "natStartPort": 50000,
    "natEndPort": 50119,
    "natBackendPort": 3389,
    "nicName": "[concat(variables('namingInfix'), 'nic')]",
    "ipConfigName": "[concat(variables('namingInfix'), 'ipconfig')]",
    "frontEndIPConfigID": "[concat(variables('lbID'),'/frontendIPConfigurations/loadBalancerFrontEnd')]",
    "osType": {
      "publisher": "MicrosoftWindowsServer",
      "offer": "WindowsServer",
      "sku": "[parameters('windowsOSVersion')]",
      "version": "latest"
    },
    "imageReference": "[variables('osType')]",
    "webDeployPackageFullPath": "[concat(parameters('_artifactsLocation'), parameters('webDeployPackage'))]",
    "powershelldscZipFullPath": "[concat(parameters('_artifactsLocation'), parameters('powershelldscZip'))]",
    "powershelldscArchiveFolder": "DSC",
    "powershelldscArchiveFileName": "IISInstall.ps1.zip"

  },
  "resources": [
    {
      "type": "Microsoft.Network/publicIPAddresses",
      "name": "[variables('publicIPAddressName')]",
      "location": "[resourceGroup().location]",
      "apiVersion": "2016-03-30",
      "properties": {
        "publicIPAllocationMethod": "Dynamic",
        "dnsSettings": {
          "domainNameLabel": "[variables('longNamingInfix')]"
        }
      }
    },
    {
      "type": "Microsoft.Network/loadBalancers",
      "name": "[variables('loadBalancerName')]",
      "location": "[resourceGroup().location]",
      "apiVersion": "2016-03-30",
      "dependsOn": [
        "[concat('Microsoft.Network/publicIPAddresses/', variables('publicIPAddressName'))]"
      ],
      "properties": {
        "frontendIPConfigurations": [
          {
            "name": "LoadBalancerFrontEnd",
            "properties": {
              "publicIPAddress": {
                "id": "[variables('publicIPAddressID')]"
              }
            }
          }
        ],
        "backendAddressPools": [
          {
            "name": "[variables('bePoolName')]"
          }
        ],
        "inboundNatPools": [
          {
            "name": "[variables('natPoolName')]",
            "properties": {
              "frontendIPConfiguration": {
                "id": "[variables('frontEndIPConfigID')]"
              },
              "protocol": "tcp",
              "frontendPortRangeStart": "[variables('natStartPort')]",
              "frontendPortRangeEnd": "[variables('natEndPort')]",
              "backendPort": "[variables('natBackendPort')]"
            }
          }
        ],
        "loadBalancingRules": [
          {
            "name": "LBRule",
            "properties": {
              "frontendIPConfiguration": {
                "id": "[variables('frontEndIPConfigID')]"
              },
              "backendAddressPool": {
                "id": "[variables('lbPoolID')]"
              },
              "protocol": "Tcp",
              "frontendPort": 80,
              "backendPort": 80,
              "enableFloatingIP": false,
              "idleTimeoutInMinutes": 5,
              "probe": {
                "id": "[variables('lbProbeID')]"
              }
            }
          }
        ],
        "probes": [
          {
            "name": "tcpProbe",
            "properties": {
              "protocol": "Tcp",
              "port": 80,
              "intervalInSeconds": 5,
              "numberOfProbes": 2
            }
          }
        ]
      }
    },
    {
      "type": "Microsoft.Compute/virtualMachineScaleSets",
      "name": "[variables('namingInfix')]",
      "location": "[resourceGroup().location]",
      "apiVersion": "2016-04-30-preview",
      "dependsOn": [
        "[concat('Microsoft.Network/loadBalancers/', variables('loadBalancerName'))]"
      ],
      "sku": {
        "name": "[parameters('vmSku')]",
        "tier": "Standard",
        "capacity": "[parameters('instanceCount')]"
      },
      "properties": {
        "overprovision": false,
        "upgradePolicy": {
          "mode": "Manual"
        },
        "virtualMachineProfile": {
          "storageProfile": {
            "osDisk": {
              "caching": "ReadWrite",
              "createOption": "FromImage"
            },
            "imageReference": "[variables('imageReference')]"
          },
          "osProfile": {
            "computerNamePrefix": "[variables('namingInfix')]",
            "adminUsername": "[parameters('adminUsername')]",
            "adminPassword": "[parameters('adminPassword')]"
          },
          "networkProfile": {
            "networkInterfaceConfigurations": [
              {
                "name": "[variables('nicName')]",
                "properties": {
                  "primary": true,
                  "ipConfigurations": [
                    {
                      "name": "[variables('ipConfigName')]",
                      "properties": {
                        "subnet": {
                          "id": "[concat('/subscriptions/', subscription().subscriptionId,'/resourceGroups/', resourceGroup().name, '/providers/Microsoft.Network/virtualNetworks/', variables('virtualNetworkName'), '/subnets/', variables('subnetWeb'))]"
                        },
                        "loadBalancerBackendAddressPools": [
                          {
                            "id": "[concat('/subscriptions/', subscription().subscriptionId,'/resourceGroups/', resourceGroup().name, '/providers/Microsoft.Network/loadBalancers/', variables('loadBalancerName'), '/backendAddressPools/', variables('bePoolName'))]"
                          }
                        ],
                        "loadBalancerInboundNatPools": [
                          {
                            "id": "[concat('/subscriptions/', subscription().subscriptionId,'/resourceGroups/', resourceGroup().name, '/providers/Microsoft.Network/loadBalancers/', variables('loadBalancerName'), '/inboundNatPools/', variables('natPoolName'))]"
                          }
                        ]
                      }
                    }
                  ]
                }
              }
            ]
          },
          "extensionProfile": {
            "extensions": [
              {
                "name": "Microsoft.Powershell.DSC",
                "properties": {
                  "publisher": "Microsoft.Powershell",
                  "type": "DSC",
                  "typeHandlerVersion": "2.9",
                  "autoUpgradeMinorVersion": true,
                  "forceUpdateTag": "[parameters('powershelldscUpdateTagVersion')]",
                  "settings": {
                    "configuration": {
                      "url": "[variables('powershelldscZipFullPath')]",
                      "script": "IISInstall.ps1",
                      "function": "InstallIIS"
                    },
                    "configurationArguments": {
                      "nodeName": "localhost",
                      "WebDeployPackagePath": "[variables('webDeployPackageFullPath')]",
                      "connectionString": "[parameters('dbConnectionString')]"
                    }
                  }
                }
              }
            ]
          }
        }
      }
    },
    {
      "type": "Microsoft.Insights/autoscaleSettings",
      "apiVersion": "2015-04-01",
      "name": "autoscalehost",
      "location": "[resourceGroup().location]",
      "dependsOn": [
        "[concat('Microsoft.Compute/virtualMachineScaleSets/', variables('namingInfix'))]"
      ],
      "properties": {
        "name": "autoscalehost",
        "targetResourceUri": "[concat('/subscriptions/',subscription().subscriptionId, '/resourceGroups/',  resourceGroup().name, '/providers/Microsoft.Compute/virtualMachineScaleSets/', variables('namingInfix'))]",
        "enabled": true,
        "profiles": [
          {
            "name": "Profile1",
            "capacity": {
              "minimum": "1",
              "maximum": "2",
              "default": "1"
            },
            "rules": [
              {
                "metricTrigger": {
                  "metricName": "Percentage CPU",
                  "metricNamespace": "",
                  "metricResourceUri": "[concat('/subscriptions/',subscription().subscriptionId, '/resourceGroups/',  resourceGroup().name, '/providers/Microsoft.Compute/virtualMachineScaleSets/', variables('namingInfix'))]",
                  "timeGrain": "PT1M",
                  "statistic": "Average",
                  "timeWindow": "PT5M",
                  "timeAggregation": "Average",
                  "operator": "GreaterThan",
                  "threshold": 70
                },
                "scaleAction": {
                  "direction": "Increase",
                  "type": "ChangeCount",
                  "value": "1",
                  "cooldown": "PT5M"
                }
              },
              {
                "metricTrigger": {
                  "metricName": "Percentage CPU",
                  "metricNamespace": "",
                  "metricResourceUri": "[concat('/subscriptions/',subscription().subscriptionId, '/resourceGroups/',  resourceGroup().name, '/providers/Microsoft.Compute/virtualMachineScaleSets/', variables('namingInfix'))]",
                  "timeGrain": "PT1M",
                  "statistic": "Average",
                  "timeWindow": "PT5M",
                  "timeAggregation": "Average",
                  "operator": "LessThan",
                  "threshold": 70
                },
                "scaleAction": {
                  "direction": "Decrease",
                  "type": "ChangeCount",
                  "value": "1",
                  "cooldown": "PT5M"
                }
              }
            ]
          }
        ]
      }
    }
  ],
  "outputs": {
    "applicationUrl": {
      "type": "string",
      "value": "[concat('http://', reference(variables('publicIPAddressName')).dnsSettings.fqdn, '/MyApp')]"
    }
  }
}