json - 请求中的参数 NO_PARAM 无效请在使用 Powershell 部署 azure arm 模板时为参数 NO_PARAM 提供正确的值

Question

我正在尝试使用 powershell 和 Arm 模板创建 azure 恢复服务备份保管库。对于此部署，我创建了部署模板和参数模板。我正在使用 ConvertFrom-Json 使用 powershell 编辑参数模板 json 文件，并使用 ConvertTo-Json 再次转换回 json 和 saivng 到模板文件。

当我执行 New-AzResourceGroupDeployment 时，我收到一个奇怪的错误，如下所示请求中的参数NO_PARAM无效，请为参数NO_PARAM提供正确的值

下面是 backuppolicy.deploy.json

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "vaultName": {
      "type": "string",
      "metadata": {
        "description": "Name of the Recovery Services Vault"
      }
    },
    "policyName": {
      "type": "string",
      "metadata": {
        "description": "Name of the Backup Policy"
      }
    },
    "scheduleRunDays": {
      "type": "array",
      "metadata": {
        "description": "Backup Schedule will run on array of Days like, Monday, Tuesday etc. Applies in Weekly Backup Type only."
      }
    },
    "scheduleRunTimes": {
      "type": "array",
      "metadata": {
        "description": "Times in day when backup should be triggered. e.g. 01:00, 13:00. This will be used in LTR too for daily, weekly, monthly and yearly backup."
      }
    },
    "timeZone": {
      "type": "string",
      "metadata": {
        "description": "Any Valid timezone, for example:UTC, Pacific Standard Time. Refer: https://msdn.microsoft.com/en-us/library/gg154758.aspx"
      }
    },
    "weeklyRetentionDurationCount": {
      "type": "int",
      "metadata": {
        "description": "Number of weeks you want to retain the backup"
      }
    },
    "location": {
      "type": "string",
      "defaultValue": "[resourceGroup().location]",
      "metadata": {
        "description": "Location for all resources."
      }
    }
  },
  "resources": [
    {
      "apiVersion": "2016-06-01",
      "name": "[concat(parameters('vaultName'), '/', parameters('policyName'))]",
      "type": "Microsoft.RecoveryServices/vaults/backupPolicies",
      "location": "[parameters('location')]",
      "properties": {
        "backupManagementType": "AzureIaasVM",
        "instantRpRetentionRangeInDays": 5,
        "schedulePolicy": {
          "scheduleRunFrequency": "Weekly",
          "scheduleRunDays": "[parameters('scheduleRunDays')]",
          "scheduleRunTimes": "[parameters('scheduleRunTimes')]",
          "schedulePolicyType": "SimpleSchedulePolicy"
        },
        "retentionPolicy": {
          "dailySchedule": null,
          "weeklySchedule": {
            "daysOfTheWeek": "[parameters('scheduleRunDays')]",
            "retentionTimes": "[parameters('scheduleRunTimes')]",
            "retentionDuration": {
              "count": "[parameters('weeklyRetentionDurationCount')]",
              "durationType": "Weeks"
            }
          },
          "retentionPolicyType": "LongTermRetentionPolicy"
        },
        "timeZone": "[parameters('timeZone')]"
      }
    }
  ]
}

下面是 backuppolicy.parameters.json

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentParameters.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "vaultName": {
      "value": "diskencrypt"
    },
    "policyName": {
      "value": "autoamted-policy-changed"
    },
    "scheduleRunDays": {
      "value": [
        "Monday",
        "Tuesday",
        "Friday"
      ]
    },
    "scheduleRunTimes": {
      "value": [
        "20200309T110019Z"
      ]
    },
    "timeZone": {
      "value": "UTC"
    },
    "weeklyRetentionDurationCount": {
      "value": 5
    }
  }
}

下面是我用来修改json模板并触发部署的powershell代码

$days = "Monday,Tuesday,Friday"
$ScheduleBackupDays = @()
$days = $days.Split(',')
$CurrentTime = @(Get-Date -Format yyyyMMddTHHmmssZ)
foreach($day in $days){
    $ScheduleBackupDays += $day
}
$params = @{
    policyName = "autoamted-policy-changed"
    vaultName = "diskencrypt"
    scheduleRunDays = $ScheduleBackupDays
    scheduleRunTimes = $CurrentTime
    timeZone = "UTC"
    weeklyRetentionDurationCount = 5

}
$templateFile = "$PSScriptRoot\backuppolicy.deploy.json"
$paramtersfile = "$PSScriptRoot\backuppolicy.parameters.json"

$ParameterFileObject = Get-Content -Path $paramtersfile -Raw | ConvertFrom-Json

foreach($Key in $params.Keys){
    $ParameterFileObject.parameters.$Key.value = $params.Get_Item($Key)
}

$ParameterFileObject | ConvertTo-Json -Depth 100 | foreach { [System.Text.RegularExpressions.Regex]::Unescape($_) } | Set-Content -Path $paramtersfile

New-AzResourceGroupDeployment -ResourceGroupName diskencrypt -TemplateFile $templateFile -TemplateParameterFile $paramtersfile

Answer 1

该异常有点误导。真正的问题是，ARM 无法理解参数文件中的时间戳:

"scheduleRunTimes": {
            "value": [
                "20200309T110019Z"
            ]
        }

这里有两个问题:

1. 格式错误。 ARM 期望根据 ISO-8601 提供 UTC 时间戳(包含所有破折号和冒号):2020-03-09T11:00:19Z
2. 您无法在 scheduleRunTimes 中指定秒数。事实上，只允许步行 30 分钟。

删除此示例中最后的 19 秒，您应该会很好:

"scheduleRunTimes": {
            "value": [
                "2020-03-09T11:00:00Z"
            ]
        }

如果您只需要当前时间，您可以在 powershell 脚本中更改时间戳的格式，如下所示:

$CurrentTime = @(Get-Date -Format 'yyyy-MM-dd-THH:00:00Z')

如果您需要四舍五入到最接近的半小时，则日期时间对象的情况会变得更加复杂，因为没有构建四舍五入的方法。

假设您想要排除 future 的时间戳，向下舍入到最后 30 分钟应该没问题:

$date = Get-Date
$roundedDate = $date.AddMinutes(-($date.Minute % 30))
$CurrentTime = Get-Date $roundedDate -Format 'yyyy-MM-ddTHH:mm:00Z'