Featch在多个服务器上安装SQL实例名称

Question

我写这个是为了在远程sql服务器上获取已安装实例的列表，但它失败了以下错误我将按如下方式实现此目的

1. 从我的中央数据库服务器
中读取服务器名称列表
2. 创建一个从step1中检索服务器的函数。

代码

# -- Get the patch servers from central server  function
get-patchservers {
    # -- Where is your central patching database located?
    $sql_inst   = Read-Host "SQL instance hosting Patching DB; default: Severname\SQL201201"
    # -- Default patching control server to "ServerName\SQL201201"
    if($sql_inst -eq "") {$sql_inst="Severname\SQL201201"}
    # -- What's the name of your central patching database?
    $sql_db     = Read-Host "Name of Patching DB; default:patchdb"
    # -- Default datatabase for patching db
    if($sql_db -eq "") {$sql_db="patchdb" }
    # -- T-SQL to feacth server name from cerntral db
    $Tsql = "SELECT svr_name  FROM server"
    $ServerList = Invoke-Sqlcmd -Query $Tsql -ServerInstance $sql_inst -Database $sql_db    #return $ServerList   

    foreach($Server in $ServerList) {
        ECHO $Server
        $reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $Server)
        $regKey= $reg.OpenSubKey("SOFTWARE\\Microsoft\\MicrosoftSQL Server\\Instance Names\\SQL" )
        $instances = $regkey.GetValueNames()
        $instances
    }
}    

Answer 1

我发现了这里造成的问题。它看起来与invoke-sqlcmd命令返回的标头有问题