{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "architecture": {
      "type": "string",
      "metadata": {
        "description": "The architecture of the Virtual Machines"
      },
      "defaultValue": "x64",
      "allowedValues": [
        "Arm64",
        "x64"
      ]
    },
    "baseName": {
      "type": "string",
      "minLength": 1,
      "metadata": {
        "description": "Base name to be used in resource names (usually the cluster's Infra ID)"
      }
    },
    "storageAccount": {
      "type": "string",
      "metadata": {
        "description": "The Storage Account name"
      }
    },
    "vhdBlobURL": {
      "type": "string",
      "metadata": {
        "description": "URL pointing to the blob where the VHD to be used to create master and worker machines is located"
      }
    }
  },
  "variables": {
    "location": "[resourceGroup().location]",
    "galleryName": "[concat('gallery_', replace(parameters('baseName'), '-', '_'))]",
    "imageName": "[parameters('baseName')]",
    "imageNameGen2": "[concat(parameters('baseName'), '-gen2')]",
    "imageRelease": "1.0.0"
  },
  "resources": [
    {
      "apiVersion": "2021-10-01",
      "type": "Microsoft.Compute/galleries",
      "name": "[variables('galleryName')]",
      "location": "[variables('location')]",
      "resources": [
        {
          "apiVersion": "2021-10-01",
          "type": "images",
          "name": "[variables('imageName')]",
          "location": "[variables('location')]",
          "dependsOn": [
            "[variables('galleryName')]"
          ],
          "properties": {
            "architecture": "[parameters('architecture')]",
            "hyperVGeneration": "V1",
            "identifier": {
              "offer": "rhcos",
              "publisher": "RedHat",
              "sku": "basic"
            },
            "osState": "Generalized",
            "osType": "Linux"
          },
          "resources": [
            {
              "apiVersion": "2021-10-01",
              "type": "versions",
              "name": "[variables('imageRelease')]",
              "location": "[variables('location')]",
              "dependsOn": [
                "[variables('imageName')]"
              ],
              "properties": {
                "publishingProfile": {
                  "storageAccountType": "Standard_LRS",
                  "targetRegions": [
                    {
                      "name": "[variables('location')]",
                      "regionalReplicaCount": "1"
                    }
                  ]
                },
                "storageProfile": {
                  "osDiskImage": {
                    "source": {
                      "id": "[resourceId('Microsoft.Storage/storageAccounts', parameters('storageAccount'))]",
                      "uri": "[parameters('vhdBlobURL')]"
                    }
                  }
                }
              }
            }
          ]
        },
        {
          "apiVersion": "2021-10-01",
          "type": "images",
          "name": "[variables('imageNameGen2')]",
          "location": "[variables('location')]",
          "dependsOn": [
            "[variables('galleryName')]"
          ],
          "properties": {
            "architecture": "[parameters('architecture')]",
            "hyperVGeneration": "V2",
            "identifier": {
              "offer": "rhcos-gen2",
              "publisher": "RedHat-gen2",
              "sku": "gen2"
            },
            "osState": "Generalized",
            "osType": "Linux"
          },
          "resources": [
            {
              "apiVersion": "2021-10-01",
              "type": "versions",
              "name": "[variables('imageRelease')]",
              "location": "[variables('location')]",
              "dependsOn": [
                "[variables('imageNameGen2')]"
              ],
              "properties": {
                "publishingProfile": {
                  "storageAccountType": "Standard_LRS",
                  "targetRegions": [
                    {
                      "name": "[variables('location')]",
                      "regionalReplicaCount": "1"
                    }
                  ]
                },
                "storageProfile": {
                  "osDiskImage": {
                    "source": {
                      "id": "[resourceId('Microsoft.Storage/storageAccounts', parameters('storageAccount'))]",
                      "uri": "[parameters('vhdBlobURL')]"
                    }
                  }
                }
              }
            }
          ]
        }
      ]
    }
  ]
}
