{
    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "adminUsername": {
            "type": "string",
            "defaultValue": "chgeuer",
            "metadata": { "description": "Admin user name for the Virtual Machines." }
        },
        "adminPassword": {
            "type": "securestring",
            "metadata": { "description": "Admin password for the Virtual Machines." }
        },
        "deploymentName": {
            "type": "string",
            "defaultValue": "hjds",
            "metadata": { "description": "Prefix for all names like storage accounts, etc." }
        }
    },
    "variables": {
        "vnetname": "[concat(parameters('deploymentName'),'-vnet')]",
        "storageAccountNamePrefix": "[toLower(replace(parameters('deploymentName'),'-',''))]",
        "storageAccountNames": {
            "frontend": "[concat(variables('storageAccountNamePrefix'), 'fe')]"
        },
        "instanceCount": {
            "frontend": 7
        },
        "math": {
            "modulo2": [ "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1", "0", "1" ],
            "modulo3": [ "0", "1", "2", "0", "1", "2", "0", "1", "2", "0", "1", "2", "0", "1", "2", "0", "1", "2", "0", "1", "2", "0", "1", "2", "0", "1", "2", "0", "1", "2", "0", "1", "2", "0", "1", "2" ]
        }
    },
    "resources": [

        {
            "type": "Microsoft.Network/virtualNetworks",
            "apiVersion": "2015-05-01-preview",
            "location": "[resourceGroup().location]",
            "name": "[variables('vnetname')]",
            "tags": { "displayName": "Virtual Network" },
            "properties": {
                "addressSpace": { "addressPrefixes": [ "10.0.0.0/16" ] },
                "subnets": [
                    {
                        "name": "subnet-fe",
                        "properties": { "addressPrefix": "10.0.0.0/24" }
                    }
                ]
            }
        },

        {
            "type": "Microsoft.Compute/availabilitySets",
            "apiVersion": "2015-05-01-preview",
            "location": "[resourceGroup().location]",
            "name": "availabilityset-fe",
            "tags": { "displayName": "Availability Set Frontend" }
        },

        {
            "type": "Microsoft.Network/networkInterfaces",
            "apiVersion": "2015-05-01-preview",
            "location": "[resourceGroup().location]",
            "name": "[concat('nic-fe-', copyIndex())]",
            "tags": { "displayName": "Frontend - Network Interface Cards" },
            "copy": {
                "name": "frontendNicCopy",
                "count": "[variables('instanceCount').frontend]"
            },
            "dependsOn": [
                "[concat('Microsoft.Network/virtualNetworks/', variables('vnetname'))]"
            ],
            "properties": {
                "ipConfigurations": [
                    {
                        "name": "[concat('ipconfig-fe-', copyIndex())]",
                        "properties": {
                            "privateIPAllocationMethod": "Static",
                            "privateIPAddress": "[concat('10.0.0.', copyIndex(10))]",
                            "subnet": {
                                "id": "[concat(resourceId('Microsoft.Network/virtualNetworks',variables('vnetname')), '/subnets/', 'subnet-fe')]"
                            }
                        }
                    }
                ]
            }
        },
        {
            "type": "Microsoft.Compute/virtualMachines",
            "apiVersion": "2015-05-01-preview",
            "location": "[resourceGroup().location]",
            "name": "[concat('fe', '-', copyIndex())]",
            "tags": { "displayName": "Frontend - Virtual Machines" },
            "copy": {
                "name": "frontendNodeVMCopy",
                "count": "[variables('instanceCount').frontend]"
            },
            "dependsOn": [
                "[concat('Microsoft.Compute/availabilitySets/', 'availabilityset-fe')]",
                "[concat('Microsoft.Storage/storageAccounts/', concat(variables('storageAccountNames').frontend, variables('math').modulo2[copyIndex()]))]",
                "[concat('Microsoft.Network/networkInterfaces/', concat('nic-fe-', copyIndex()))]"
            ],
            "properties": {
                "hardwareProfile": { "vmSize": "Standard_A0" },
                "networkProfile": { "networkInterfaces": [ { "id": "[resourceId('Microsoft.Network/networkInterfaces', concat('nic-fe-', copyIndex()))]" } ] },
                "availabilitySet": { "id": "[resourceId('Microsoft.Compute/availabilitySets', 'availabilityset-fe')]" },
                "osProfile": {
                    "computerName": "[concat('fe-', copyIndex())]",
                    "adminUsername": "[parameters('adminUsername')]",
                    "adminPassword": "[parameters('adminPassword')]",
                    "linuxConfiguration": {
                        "disablePasswordAuthentication": "false"
                    }
                },
                "storageProfile": {
                    "imageReference": {
                        "publisher": "Canonical",
                        "offer": "UbuntuServer",
                        "sku": "14.04.3-LTS",
                        "version": "latest"
                    },
                    "osDisk": {
                        "name": "[concat('fe-', copyIndex(), '-osdisk')]",
                        "vhd": {
                            "uri": "[concat('http://', concat(variables('storageAccountNames').frontend, variables('math').modulo2[copyIndex()]), '.blob.core.windows.net/', 'vhds', '/',  concat('fe', '-', copyIndex()), '-osdisk.vhd') ]"
                        },
                        "caching": "ReadWrite",
                        "createOption": "FromImage"
                    }
                }
            }
        },

        {
            "type": "Microsoft.Storage/storageAccounts",
            "apiVersion": "2015-05-01-preview",
            "location": "[resourceGroup().location]",
            "properties": { "accountType": "Standard_LRS" },
            "name": "[concat(variables('storageAccountNames').frontend, '0')]",
            "tags": { "displayName": "StorageAccount FrontEnd 0" }
        },
        {
            "type": "Microsoft.Storage/storageAccounts",
            "apiVersion": "2015-05-01-preview",
            "location": "[resourceGroup().location]",
            "properties": { "accountType": "Standard_LRS" },
            "name": "[concat(variables('storageAccountNames').frontend, '1')]",
            "tags": { "displayName": "StorageAccount FrontEnd 1" }
        }
    ]
}