获取虚拟机 DNS 名称
以下 C# 和 Visual Basic Scripting Edition (VBScript) 示例检索虚拟机的 DNS 名称。
若要运行此示例代码，必须安装客户端集成服务，并且客户端操作系统必须正在运行。
using System;
using System.IO;
using System.Xml.XPath;
using System.Management;
// exchangeDataItem xml document sample instance
//
//<INSTANCE CLASSNAME="Msvm_KvpExchangeDataItem">
// <PROPERTY NAME="Caption" PROPAGATED="true" TYPE="string"></PROPERTY>
// <PROPERTY NAME="Data" TYPE="string">
// <VALUE>AUTOBVT-4OVYXAB</VALUE>
// </PROPERTY>
// <PROPERTY NAME="Description" PROPAGATED="true" TYPE="string"></PROPERTY>
// <PROPERTY NAME="ElementName" PROPAGATED="true" TYPE="string"></PROPERTY>
// <PROPERTY NAME="Name" TYPE="string">
// <VALUE>FullyQualifiedDomainName</VALUE>
// </PROPERTY>
// <PROPERTY NAME="Source" TYPE="uint16">
// <VALUE>2</VALUE>
// </PROPERTY>
//</INSTANCE>
namespace HyperVSamples
{
class GetVirtualMachineDNSName
{
static bool VMRunning(ManagementObject vm)
{
const int Enabled = 2;
bool running = false;
foreach (UInt16 operationStatus in (UInt16[])vm["OperationalStatus"])
{
if (operationStatus == Enabled)
{
running = true;
break;
}
}
return running;
}
static void GetVirtualSystemDNS(string vmName)
{
ManagementScope scope = new ManagementScope(@"root\virtualization\v2", null);
string query = String.Format("select * from Msvm_ComputerSystem where ElementName = '{0}'", vmName);
ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, new ObjectQuery(query));
ManagementObjectCollection vms = searcher.Get();
foreach (ManagementObject vm in vms)
{
if (VMRunning(vm))
{
ManagementObjectCollection kvpExchangeComponents = vm.GetRelated("Msvm_KvpExchangeComponent");
if (kvpExchangeComponents.Count != 1)
{
throw new Exception(String.Format("{0} instance of Msvm_KvpExchangeComponent was found", kvpExchangeComponents.Count));
}
foreach (ManagementObject kvpExchangeComponent in kvpExchangeComponents)
{
foreach (string exchangeDataItem in (string[])kvpExchangeComponent["GuestIntrinsicExchangeItems"])
{
XPathDocument xpathDoc = new XPathDocument(new StringReader(exchangeDataItem));
XPathNavigator navigator = xpathDoc.CreateNavigator();
navigator = navigator.SelectSingleNode("/INSTANCE/PROPERTY[@NAME='Name']/VALUE[child::text() = 'FullyQualifiedDomainName']");
if (navigator != null)
{
navigator = navigator.SelectSingleNode("/INSTANCE/PROPERTY[@NAME='Data']/VALUE/child::text()");
Console.WriteLine("Virtual machine {0} DNS name is: {1}", vmName, navigator.Value);
break;
}
}
}
}
else
{
Console.WriteLine("Unable to retrieve virtual machine DNS name. VM {0} is not in running state", vmName);
}
}
}
static void Main(string[] args)
{
if (args != null && args.Length != 1)
{
Console.WriteLine("Usage: GetVirtualMachineDNSName vmName");
return;
}
GetVirtualSystemDNS(args[0]);
}
}
}
option explicit
dim objWMIService
dim fileSystem
const Enabled = 2
Main()
'-----------------------------------------------------------------
' Main routine
'-----------------------------------------------------------------
Sub Main()
dim computer, objArgs, computerSystem, vmName
set fileSystem = Wscript.CreateObject("Scripting.FileSystemObject")
computer = "."
set objWMIService = GetObject("winmgmts:\\" & computer & "\root\virtualization\v2")
set objArgs = WScript.Arguments
if WScript.Arguments.Count = 1 then
vmName= objArgs.Unnamed.Item(0)
else
WScript.Echo "usage: cscript GetVirtualMachineDNSName.vbs vmName"
WScript.Quit
end if
if GetVirtualSystemDNS(vmName) then
WriteLog "Done"
WScript.Quit(0)
else
WriteLog "GetVirtualMachineDNSName failed"
WScript.Quit(1)
end if
End Sub
'-----------------------------------------------------------------
' Check if virtual machine is running
'-----------------------------------------------------------------
Function VMRunning(computerSystem)
dim operationStatus
VMRunning = false
for each operationStatus in computerSystem.OperationalStatus
if operationStatus = Enabled then
VMRunning = true
exit function
end if
next
End Function
'-----------------------------------------------------------------
' GetVirtualSystemDNS
'
' exchangeDataItem xml document sample instance
'
' <INSTANCE CLASSNAME="Msvm_KvpExchangeDataItem">
' <PROPERTY NAME="Caption" PROPAGATED="true" TYPE="string"></PROPERTY>
' <PROPERTY NAME="Data" TYPE="string">
' <VALUE>AUTOBVT-4OVYXAB</VALUE>
' </PROPERTY>
' <PROPERTY NAME="Description" PROPAGATED="true" TYPE="string"></PROPERTY>
' <PROPERTY NAME="ElementName" PROPAGATED="true" TYPE="string"></PROPERTY>
' <PROPERTY NAME="Name" TYPE="string">
' <VALUE>FullyQualifiedDomainName</VALUE>
' </PROPERTY>
' <PROPERTY NAME="Source" TYPE="uint16">
' <VALUE>2</VALUE>
' </PROPERTY>
' </INSTANCE>
'-----------------------------------------------------------------
Function GetVirtualSystemDNS(vmName)
dim objXMLDoc, query , kvpExchangeComponents, kvpExchangeComponent, vm, vms
dim exchangeDataItem, xpath, node
GetVirtualSystemDNS = false
set objXMLDoc = CreateObject("Microsoft.XMLDOM")
objXMLDoc.async = False
query = Format1("select * from Msvm_ComputerSystem where ElementName = '{0}'", vmName)
set vms = objWMIService.ExecQuery(query)
for each vm in vms
if VMRunning(vm) then
query = Format1("ASSOCIATORS OF {{0}} WHERE resultClass = Msvm_KvpExchangeComponent", vm.Path_.Path)
set kvpExchangeComponents = objWMIService.ExecQuery(query)
if kvpExchangeComponents.Count <> 1 then
WriteLog Format1("{0} instance of Msvm_KvpExchangeComponent was found", kvpExchangeComponents.Count)
WScript.Quit(1)
end if
set kvpExchangeComponent = kvpExchangeComponents.ItemIndex(0)
for each exchangeDataItem in kvpExchangeComponent.GuestIntrinsicExchangeItems
objXMLDoc.loadXML(exchangeDataItem)
xpath = "/INSTANCE/PROPERTY[@NAME='Name']/VALUE[child:text() = 'FullyQualifiedDomainName']"
set node = objXMLDoc.selectSingleNode(xpath)
if Not (node Is Nothing) then
xpath = "/INSTANCE/PROPERTY[@NAME='Data']/VALUE/child:text()"
set node = objXMLDoc.selectSingleNode(xpath)
WriteLog Format2("Virtual machine {0} DNS name is: {1}", vmName, node.Text)
end if
next
else
WriteLog Format1("Unable to retrieve virtual machine DNS name. VM {0} is not in running state", vmName)
WScript.Quit(1)
end if
next
GetVirtualSystemDNS = true
End Function
'-----------------------------------------------------------------
' Create the console log files.
'-----------------------------------------------------------------
Sub WriteLog(line)
dim fileStream
set fileStream = fileSystem.OpenTextFile(".\GetVirtualSystemDNSName.log", 8, true)
WScript.Echo line
fileStream.WriteLine line
fileStream.Close
End Sub
'------------------------------------------------------------------------------
' The string formatting functions to avoid string concatenation.
'------------------------------------------------------------------------------
Function Format2(myString, arg0, arg1)
Format2 = Format1(myString, arg0)
Format2 = Replace(Format2, "{1}", arg1)
End Function
'------------------------------------------------------------------------------
' The string formatting functions to avoid string concatenation.
'------------------------------------------------------------------------------
Function Format1(myString, arg0)
Format1 = Replace(myString, "{0}", arg0)
End Function