16

WsManConnectionInfo我有一个 Windows 服务，它通过/定期在远程计算机上运行 PowerShell 脚本RunspaceFactory（按照本文中的步骤：使用 C# 在 PowerShell 中远程执行命令）：

var connectionInfo = new WSManConnectionInfo(false, server, 5985, "/wsman",
                                             "http://schemas.microsoft.com/powershell/Microsoft.PowerShell",
                                             cred)
                        {
                            OperationTimeout = 4*60*1000,
                            OpenTimeout = 1*60*1000
                        };
using (var runSpace = RunspaceFactory.CreateRunspace(connectionInfo))
{
    runSpace.Open();
    using (var p = runSpace.CreatePipeline())
    {
        p.Commands.AddScript(script);
        var output = p.Invoke();
        ...
    }
}

现在，如果我使用管理员帐户运行 Windows 服务本身，一切都很好。但是，如果我使用 LocalSystem 帐户运行该服务，则会出现以下异常；

System.Management.Automation.Remoting.PSRemotingTransportException:
    Connecting to remote server NOSRVDEV02 failed with the following error message :
        WinRM cannot process the request. The following error with
        errorcode 0x8009030d occurred while using Negotiate authentication:
        A specified logon session does not exist. It may already have been terminated.

    Possible causes are:
        -The user name or password specified are invalid.
        -Kerberos is used when no authentication method and no user name are specified.
        -Kerberos accepts domain user names, but not local user names.
        -The Service Principal Name (SPN) for the remote computer name and port does not exist.
        -The client and remote computers are in different domains and there is no trust between the two domains.

    After checking for the above issues, try the following:
        -Check the Event Viewer for events related to authentication.
        -Change the authentication method; add the destination computer to the WinRM TrustedHosts configuration setting or use HTTPS transport.
         Note that computers in the TrustedHosts list might not be authenticated.
        -For more information about WinRM configuration, run the following command: winrm help config. For more information, see the about_Remote_Troubleshooting Help topic.

    at System.Management.Automation.Runspaces.AsyncResult.EndInvoke()
    at System.Management.Automation.Runspaces.Internal.RunspacePoolInternal.EndOpen(IAsyncResult asyncResult)
    at System.Management.Automation.RemoteRunspace.Open()
    ...

注意：这与凭据无关WSManConnectionInfo- 只是服务属性“登录”选项卡中的帐户设置。

我不想授予服务管理员权限。任何想法为什么 LocalSystem 用户无法登录？

附加信息：

  • 远程计算机不是域的成员。
  • I have tried to connect both by IP address and hostname (both are listed in the local computer's TrustedHosts).

EDIT: Even more info (summary of the comments):

  • Local computer: Windows 7 Ultimate 64bit (virtual machine on a Windows 8 box).
  • Remote computer: Windows Server 2008R2 Datacenter 64bit.
  • The main reason we don't want to change service user accounts is that this is an update to an old service which is already deployed on many clients (customers).
  • The service also accesses the Windows registry and the file system on the local computer, so setting the user account to something more restricted, like NetworkService, would just open a different can of worms.
4

1 回答 1

34

A rather surprising solution to this one: The username in the PSCredential object (cred) needed to be prefixed with the domain-less remote computer's name, e.g. "MYREMOTESERVERNAME\remoteusername" and not just "remoteusername".

I have no idea why the prefix is needed only when connecting with the LocalSystem account though...

于 2013-11-14T16:27:06.300 回答