在 Puppet 中收到 "Unknown function" 错误

Question

在 Puppet 中定义函数时收到错误。 C:\Windows\system32> puppet agent --test --server davidhromyk.test.5.puppet.lrscorp.net --masterport 8937 --ssldir C:\Temp\davidhromyk.test.5.puppet.lrscorp.net Info: Using configured environment 'internal' Info: Retrieving pluginfacts Info: Retrieving plugin Info: Retrieving locales Info: Loading facts Error: Could not retrieve catalog from remote server: Error 500 on SERVER: Server Error: Evaluation Error: Unknown function: 'driver_name'. (file: /home/david.hromyk/.puppetlabs/etc/code/environments/internal/modules/windows_print_server/manifests/init.pp, line: 12, column: 41) on node ops-dev-print01.lrscorp.net Warning: Not using cache on failed catalog Error: Could not retrieve catalog; skipping run

这是我的模块配置。

class windows_print_server (
  $printers,
  ){

  exec { 'Install-PrintServices':
    command  => 'Install-WindowsFeature -Name @("print-services","Print-LPD-Service")',
    unless   => '& { exit ((Get-WindowsFeature -Name Print-Services).installed -eq $false) }',
    provider => powershell,
  }

$printers.each |Integer $index, Hash $printer| {
 exec { "add printer driver ${printer.driver_name} for ${printer.name}":
  command => "Add-PrinterDriver -Name ${printer.driver_name}",
  unless  => "Get-PrinterDriver -Name ${printer.driver_name}",
}
exec { "add printer port $printer.port_name for ${printer.name}":
  command => "Add-PrinterPort -Name ${printer.port_name}",
  unless  => "Get-PrinterPort -Name ${printer.port.name}",
}
exec { "add printer $$printer.name for $printer.name":
  command => "Add-Printer -Name ${printer.name}",
  unless  => "Get-Printer -Name ${printer.name}",
  }
 }
}

这是我的 Hiera 配置。

{
  "classes": [
   "windows_print_server"
  ],
  "windows_server::administrators::list": ["ops-security"],
  "windows_print_server::printers": [
    {"name": "Bldg2-Flr1-HPM426fdn", "port_name": "172.17.17.132", "driver_name": "HP Color LaserJet Pro M452 PCL 6"},
    {"name": "Bldg3-Flr 4 Dell 2335dn", "port_name": "172.17.33.174", "driver_name": "Dell 2335dn MFP PCL6"}
  ]
}

我认为我在 init.pp 上缺少 ${printer.driver_name} 的正确语法。不确定正确的方法。类似于 ${printer[“name”]}?

Answer 1

The syntax for accessing values from a hash 在键周围使用方括号运算符 []：

$printer['driver_name']

在大多数情况下，键周围的引号是可选的，因为 Puppet 将裸词识别为字符串（这是 Puppet 语言的一般特征，并非特定于哈希键）。

要将值插入字符串，您需要将 $ 以外的所有内容括在花括号中：

$printers.each |Integer $index, Hash $printer| {
 exec { "add printer driver ${printer[driver_name]} for ${printer[name]}":
  command => "Add-PrinterDriver -Name ${printer[driver_name]}",
  unless  => "Get-PrinterDriver -Name ${printer[driver_name]}",
}

在 Puppet 中收到 "Unknown function" 错误

Receiving an "Unknown function" error in Puppet

puppet