virtualization | 易学教程

How to enable support of CPU virtualization on Macbook Pro?

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问题 I have the VirtualBox installed on my Macbook Pro, and I want to install a linux VM on VirtualBox. When I launched the new VM, it prompts that "Your CPU does not support long mode. Use a 32bit distribution." After searching for this problem, I found that support of CPU virtualization is required for this VM. Then I checked on my Macbook and its CPU is i7 which supports virtualization. So I guess the problem is related to the OS or EFI version? OS version: 10.6.8 / EFI version: latest (check

Cannot change permissions of folders within vagrant home folder

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When I ssh in to my vagrant vm, I can change permissions of files and folders above and outside the vagrant user folder, and for files within the vagrant user folder. But cannot change permissions for folders under the vagrant user folder. I have the same problem whether logged in as the vagrant user and root. Is there some sort of restriction on changing permissions in the vagrant user's folder? The vagrant user folder is not shared with the host OS, but the capistrano deploy folder and the docRoot are. Guest is CentOS 6, Host is OS X 10.7. Vagrant is 1.0.5. Virtualbox is 4.2.1. Greg Elin The

Unable to start Docker Service in Ubuntu 16.04

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问题 I've been trying to use Docker (1.10) on Ubuntu 16.04 but installation fails because Docker Service doesn't start . I've already tried to install docker by docker.io , docker-engine apt packages and curl -sSL https://get.docker.com/ | sh but it doesn't work. My Host info is: Linux Xenial 4.5.3-040503-generic #201605041831 SMP Wed May 4 22:33:50 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux Here is systemctl status docker.service : ● docker.service - Docker Application Container Engine Loaded:

C#: Create a virtual drive in Computer

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问题 Is there any way to create a virtual drive in "(My) Computer" and manipulate it, somewhat like JungleDisk does it? It probably does something like: override OnRead(object sender, Event e) { ShowFilesFromAmazon(); } Are there any API:s for this? Maybe to write to an XML-file or a database, instead of a real drive. The Dokan Library seems to be the answer that mostly corresponds with my question, even though System.IO.IsolatedStorage seems to be the most standardized and most Microsoft

Determine when running in a virtual machine

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问题 Is there an official way for an application to determine if it is running in VMWare or Virtual PC (or whatever Microsoft is calling it now)? The code I have seen is usually a hack that took advantage of some odd behavioral side effect in a specific version of VMWare or Virtual PC. Ideally Delphi code, but if you can link to an official explanation then I am sure I can convert it. 回答1: I wrote a series of articles last year on this, with source code. VMware and Wine detection are here. Virtual

Secure way to run other people code (sandbox) on my server?

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I want to make a web service that run other people code locally... Naturally, I want to limit their code access to certain "sandbox" directory, and that they wont be able to connect to other parts of my server (DB, main webserver, etc) Whats the best way to do it? Run VMware/Virtualbox: (+) I guess it's as secure as it gets.. even if someone manage to "hack".. they only hack the guest machine (+) can limit the cpu & memory the process uses (+) easy to setup.. just create the VM (-) harder to "connect" the sandbox directory from the host to the guest (-) wasting extra memory and cpu for

WPF DataGrid Virtualization with Grouping

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I'm using the WPF DataGrid from CodePlex and I need to get Virtualization to work with grouping. This question is on topic and points to an MSDN Example but it only covers ListControls with with simple (i.e. single 'column') DataTemplates. Grouping and Virtualization seems like a pretty common use case for a Grid. Is there a standard/recommended/simple way of getting this going? I realize I'm late to the party here... but I ran into this problem recently (using the DataGrid built into .NET 4). Unfortunately, there still is no virtualization of the rows once Grouping is used on the DataGrid...

What is meant by shared kernel in Docker?

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问题 In Docker ,guest OS share same kernel as Host OS have . Can someone elaborate more on it. Let I have centos os which have some kernel version ,when we pull ubuntu image then it have different kernel ,then how can we say that they have same kernel? 回答1: when we pull ubuntu image then it have different kernel No it does not: it does not have the kernel part: it relies on the kernel of the host (the one running docker engine) for all system calls . As mentioned in "Docker vs Virtualization":

How to detect if my application is running in a virtual machine?

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How can I detect (.NET or Win32) if my application is running in a virtual machine? According to Virtual PC Guy 's blog post " Detecting Microsoft virtual machines ", you can use WMI to check the manufacturer of the motherboard. In PowerShell: (gwmi Win32_BaseBoard).Manufacturer -eq "Microsoft Corporation" This is what I use: using (var searcher = new System.Management.ManagementObjectSearcher("Select * from Win32_ComputerSystem")) { using (var items = searcher.Get()) { foreach (var item in items) { string manufacturer = item["Manufacturer"].ToString().ToLower(); if ((manufacturer ==

Is GPU pass-through possible with docker for Windows?

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问题 I am trying to run an application inside a docker container in Windows 10. But I am not able to get the GPU working inside docker. I read that it needs "GPU Pass-through." How should I get around this? 回答1: GPU access from within a Docker container currently isn't supported on Windows. You need nvidia-docker , but that is currently only supported on Linux platforms. GPU passthrough with Hyper-v would require Discrete Device Assignment (DDA), which is currently only in Windows Server, and (at