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  • LAMP/TURNKEY LINUX/VIRTUAL BOX: Manipulating Files on a Virtual Machine

    - by aeid
    I am running Ubuntu 9.10 and I want to install turnkey linux's LAMP server on my machine to test out my code. I installed Turnkey LAMP via VirtualBox and it seems to be working because I can access the http://localhost. My question is: How do I manipulate files via VirtualBox? For example, if I had installed LAMP on my machine (not on a virtual machine), I could easily add/edit/delete files in the var/WWW folder. Where is the equivalent of "WWW" folder on Virtualbox and how can I interface with it? Thanks,

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  • Virtual Machines List from PowerShell vs PowerShell ISE and PowerGUI

    - by slybloty
    I am confused to why I have different information based on where I try to retrieve it from. I have 3 Windows 2012 servers (G0, G1, and G2) running Hyper-V. The following situation is captured from one server which I use to run scripts and control the others. What I'm trying to do is to get a list of the virtual machines in existence on these 3 machines: Using PowerGUI and PowerShell ISE: PS > Get-VMHost | select name Name ---- G0.nothing.com G2.nothing.com G1.nothing.com PS > Get-VMHost | Get-VM | select name Name ---- VM1628856-4 VM1628856-2 VM1628856-6 VM1628856-3 VM1628856-1 VM1628856-5 Using PowerShell: PS > Get-VMHost | select name Name ---- G0 PS > Get-VM Name State CPUUsage(%) MemoryAssigned(M) Uptime Status ---- ----- ----------- ----------------- ------ ------ VM1107610-1 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1390728-1 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1393540-1 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1393540-10 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1393540-2 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1393540-3 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1393540-4 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1393540-5 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1393540-6 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1393540-7 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1393540-8 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1393540-9 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage VM1833022-1 OffCritical 0 0 00:00:00 Cannot connect to virtual machine configuration storage My main concern is that I don't have reliable information from the 3 tools. The Hyper-V Manager application shows the same list as the PowerShell does. But if I run my scripts from the other two tools, which is what I mostly do, I don't have the same information available, therefore I can't manipulate the same VMs. I've also noticed that the Virtual Machine Manager shows the same list of VMs as the first two tools, PowerGUI and PowerShell ISE. Which information is valid? And how can I retrieve the correct list of VMs? EDIT 1 The $env:psmodulepath value: PS > $env:psmodulepath C:\Users\administrator\Documents\WindowsPowerShell\Modules; C:\Windows\system32\WindowsPowerShell\v1.0\Modules\; C:\Program Files (x86)\Microsoft SQL Server\110\Tools\PowerShell\Modules\; C:\Program Files\Microsoft System Center 2012\Virtual Machine Manager\bin\Configuration Providers\; C:\Program Files\Microsoft System Center 2012\Virtual Machine Manager\bin\psModules\; C:\Program Files (x86)\QLogic Corporation\QInstaller\Modules EDIT 2 PowerShell is using this Hyper-V module: C:\Windows\Microsoft.Net\assembly\GAC_MSIL\Microsoft.HyperV.PowerShell\v4.0_6.3.0.0__31bf3856ad364e35\Microsoft.HyperV.PowerShell.dll And PowerGUI is using this one: C:\Windows\System32\WindowsPowerShell\v1.0\Modules\Hyper-V\Hyper-V.psd1 If I try to load the module used by PowerShell onto PowerGUI I still get the same different results. How can I receive the correct information listed under Hyper-V using PowerGUI or PowerShell ISE?

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  • Sandboxie or VHD for virtual environment?

    - by lucian.jp
    I am looking for advices about creating virtual development environment. Is it better to have a base VHD file with differential VHD for stable development environment and another differential VHD file for beta development environment or should I install Sandboxie 64-bit and install both environment in different sandbox? I am concern about windows services and shortcuts with the sandbox. Current OS : Windows 7 64-bit

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  • National Geographic Channel’s Live Augmented Reality–Awesome Video

    - by Gopinath
    Augmented reality blurs the line between what is real and what is computer generated by enhancing what we see, hear, feel and smell(know more). Appshaker recently launched a live Augmented reality campaign that lets you immerse with the scenes of National Geographic Channel – play with leopards, experience space landing, feel the dinosaurs, splash water along with dolphins and more.  Check the video for yourself to see the awesomeness. 1000s of Hungarians who had chance to feel and experience the above documented Augmented reality would have been few of the luckiest. This article titled,National Geographic Channel’s Live Augmented Reality–Awesome Video, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • Two virtual computers using one laptop?

    - by JP19
    Hi, I have a laptop and an external display. I am able to use the external display either as extended desktop OR duplicate desktop. I also use a separate keyboard and mouse. So effectively, the laptop acts just as a box without display. I want to know is it possible to use the laptop as 2 virtual PCs. (with separate control). I.E., one person uses the laptop as a laptop, and other person can simultaneously connect a keyboard and mouse and the external display and effectively get a second PC. OS I am using - windows (thought solution for other OSes are welcome). Laptop is a Dell Precision M6300. thanks JP

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  • To Virtual or Not to Virtual

    - by Kevin Shyr
    I recently made a comment "I hate everything virtual" while responding to a SQL server performance question.  I then promptly fired up my Hyper-V development environment to do my proof of concept stuff, and realized that I made the cardinal sin of making a generalized comment about something, instead of saying "It depends". The bottom line is if the virtual environment gives the throughput that the server needs, then it is not that big of a deal.  I just have seen so many environment set up with SQL server sitting in virtual environment sitting in a SAN, so on top of having to plan for loss data, I now have to plan for my virtual environment failing for so many different reasons, thought SQL 2012 High Availability Group should make that easier.  To me, a virtual environment makes sense for a stateless application with big scalibility requirement, but doesn't give much benefit to an application where performance and data integrity are both important.  If security is not a concern, I would just build servers with multiple instances on them to balance the workload. Maybe this is also too generalized a comment, and I'll confess that I'm not a DBA by trade.  I'd love to hear the pros and cons of virtualizing a SQL server, or other examples where virtualization makes total sense (not just money, but recovery, rollback, etc.)

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  • virtual memory commited

    - by vinu
    After a server bounce happens, and after around 40-45 days time period, we receive continuous “Committed Virtual Memory” alerts which indicates the usage of swap space in the magnitude of 4GB This also causes the application to perform very slowly and experience a number of stalled transactions. Server Setup: 4 Tomcat Servers (version 7.0.22) that are load balanced (not clustered) by 2 Apache Servers. And the Apache servers themselves supply static content and routing to these 4 tomcat servers. Java Runtime Version: java version "1.6.0_30" Java(TM) SE Runtime Environment (build 1.6.0_30-b12) Java HotSpot(TM) 64-Bit Server VM (build 20.5-b03, mixed mode Memory Startup Parameters: MEMORY_OPTIONS="-Xms1024m -Xmx1024m -Xss192k -XX:MaxGCPauseMillis=500 -XX:+HeapDumpOnOutOfMemoryError -XX:MaxPermSize=256m -XX:+CMSClassUnloadingEnabled" Monitoring – Wily monitoring is available in all the production servers that monitors key server parameters and sends out configurable alert emails based on pre defined settings. Note: Each of the servers also has two other separate tomcat domains that run different applications Investigated area: There is no Heap Memory Leak and the GC is running fine without any issues over any period of time The current busy thread count corresponds directly to the application usage – weekends and nights have lesser no. of threads compared to business hours ThreadLocal uses a WeakReference internally. If the ThreadLocal is not strongly referenced, it will be garbage-collected, even though various threads have values stored via that ThreadLocal. Additionally, ThreadLocal values are actually stored in the Thread; if a thread dies, all of the values associated with that thread through a ThreadLocal are collected. If you have a ThreadLocal as a final class member, that's a strong reference, and it cannot be collected until the class is unloaded. But this is how any class member works, and isn't considered a memory leak. The cited problem only comes into play when the value stored in a ThreadLocal strongly references that ThreadLocal—sort of a circular reference. In this case, the value (a SimpleDateFormat), has no backwards reference to the ThreadLocal. There's no memory leak in this code. Can anyone please let me know what could be the cause of this and what to be monitored?

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  • Resources for Virtual Machine programming

    - by good_computer
    I am a beginner (a little more than that) programmer of C. I am really interested in the field of Virtual Machines. When I read about the Python VM, the PyPy project, the advancements in JVM technology, Google V8, the Erlang VM, I really get excited about these amazing pieces of technology, and really want to get my hands dirty building them or contributing to one of these projects. I need to know.. what are the things (language, concepts, algorithms, math, etc?) I need to know/learn to be able to build a virtual machine any books or other resources that will be helpful career prospects for a virtual machine engineer (but this is least important for me for now) (one more side question: somewhere I'd read something like JVM is on the cutting edge of virtual machine technology -- that it is the most advanced VM so far -- is that true?) Please give me a LONG answer detailing all that you know.

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  • How to begin with augmented reality?

    - by Terri
    I'm currently an undergrad in computer science and I'll be entering my final year next year. Augmented reality is something I find to be a really interesting topic, but I have no idea where to start learning about it. Where do you start learning about this topic and what libraries are available?

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  • How to begin with augmented reality/compvision?

    - by Terri
    I'm currently an undergrad in computer science and I'll be entering my final year next year. Augmented reality is something I find to be a really interesting topic, but I have no idea where to start learning about it. Where do you start learning about this topic and what libraries are available?

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  • Cloudstack virtual machines can't communicate with virtual routers when they are on different hosts

    - by Jorge Suárez de Lis
    I'm using Cloudstack 2.2.14 on a Ubuntu 10.04 set of hosts, and I have a problem on my setup. I have two hosts running. When a virtual router is created on host 1 and a virtual machine using that virtual router is created on host 2, or vice versa, I have no connectivity at all on the virtual machine. First of all, I have to setup the network manually on that virtual machine -usually DHCP is working, but not here-. Then, I can't ping to the virtual router from the virtual machine or vice versa. When both virtual router and virtual machine are created on the same host, everything works! Maybe those packages are being filtered somehow? I have no clue on how to proceed. Both hosts can communicate directly outside the virtualization.

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  • C++ vtable resolving with virtual inheritance

    - by Tomas Cokis
    I was curious about C++ and virtual inheritance - in particular, the way that vtable conflicts are resolved between bass and child classes. I won't pretend to understand the specifics on how they work, but what I've gleamed so far is that their is a small delay caused by using virtual functions due to that resolution. My question then is if the base class is blank - ie, its virtual functions are defined as: virtual void doStuff() = 0; Does this mean that the resolution is not necessary, because there's only one set of functions to pick from? Forgive me if this is an stupid question - as I said, I don't understand how vtables work so I don't really know any better.

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  • Use a Free Utility to Create Multiple Virtual Desktops in Windows

    - by Lori Kaufman
    If you’ve used Linux, you’re probably familiar with the virtual desktop feature. It provides a convenient way to organize programs and folders open on your desktop. You can switch among multiple desktops and have different programs and folders open on each one. However, virtual desktops is a feature missing in Windows. There are many third-party options for adding virtual desktops to Windows, including one called Dexpot, which we have covered previously. Dexpot is free, but only for private use. Companies, public institutions, non-profit organizations, and even freelancers and self-employed people must buy the program. We found another virtual desktop tool that is completely free for everyone to use, called mDesktop. It’s a lightweight, open source program that allows you to switch among multiple desktops using hot keys and specify open programs or folders to be active on all desktops. You can use mDesktop to group related programs or to work on different projects on separate desktops. mDesktop is portable and does not need to be installed. Simply extract the .zip file you downloaded (see the link at the end of this article) and double-click the mDesktop.exe file. How To Boot Your Android Phone or Tablet Into Safe Mode HTG Explains: Does Your Android Phone Need an Antivirus? How To Use USB Drives With the Nexus 7 and Other Android Devices

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  • A simple augmented reality application in C#

    - by Ian
    Hi All, I would like to start a personal project that will give me a lot of new concept to learn and understand. After some thought, I figured that an Augmented Reality related project will be the most beneficial for me because of the following reasons: I haven't tried interfacing a program with a live video/camera feed I haven't done any "image processing" project I haven't done any "graphics rendering" ever With that said, you can assume that I will totally suck at AR. So I'm here to ask for some advice regarding the best way to go through this. st milestone project that I am thinking of is to take a cheap webcam and read some Data Matrix using C#. nd milestone project will render some text-overlay on the feed when presented with a certain Data Matrix. rd milestone project will actually render some 3D shapes. I've searched all-around and found some nice yet advanced materials for AR: http://sites.google.com/site/augmentedrealitytestingsite/ http://soldeveloper.com/ http://www.mperfect.net/wpfAugReal/ So I came here to ask the following: Do you think my milestone is reasonable given my "deficiencies"? In order to start Milestone 1, can you give some materials that I can study? I prefer online materials. Thanks!

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  • How can I fix my Virtual PC 2007 network configuration

    - by DanJ
    Hi, I have installed Windows Virtual PC 2007 on my Windows 2003 R2 Server. I have installed a virtual Windows XP. I have configured the virtual PC to use Shared Networking (NAT) I have disabled the firewall on the virtual windows XP The problem: I am unable to PING from Windows 2003 (the host) to the Windows XP (virtual) I do have normal traffic from the virtual to the internet Could this problem be related to routing? How I can I fix this network configuration to allow for the following traffic: 1. From Virtual to Internet 2. From Host to Virtual 3. If possible, from Internet to Virtual on pre-defined ports (port forwarding?) Thanks

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  • Using a GoDaddy SSL certificate with Virtualmin (Webmin)

    - by Kevin
    A client of mine decided to go ahead and move from a self-signed certificate to a commercial one ("GoDaddy Standard SSL"). The first service I wanted to move to the commercial SSL cert was Webmin/Usermin... However, upon migrating to the new SSL cert and restarting Webmin, I got the following error: [21/Oct/2012:13:12:47 -0400] Restarting Failed to open SSL cert /etc/webmin/miniserv.cert at /usr/share/webmin/miniserv.pl line 4229. Error: Webmin server did not write new PID file And that's all it says. Here's Webmin's config file (/etc/webmin/miniserv.conf): port=10000 root=/usr/share/webmin mimetypes=/usr/share/webmin/mime.types addtype_cgi=internal/cgi realm=Webmin Server logfile=/var/webmin/miniserv.log errorlog=/var/webmin/miniserv.error pidfile=/var/webmin/miniserv.pid logtime=168 ppath= ssl=0 env_WEBMIN_CONFIG=/etc/webmin env_WEBMIN_VAR=/var/webmin atboot=1 logout=/etc/webmin/logout-flag listen=10000 denyfile=\.pl$ log=1 blockhost_failures=5 blockhost_time=60 syslog=1 session=1 server=MiniServ/1.600 userfile=/etc/webmin/miniserv.users keyfile=/etc/webmin/miniserv.pem passwd_file=/etc/shadow passwd_uindex=0 passwd_pindex=1 passwd_cindex=2 passwd_mindex=4 passwd_mode=0 preroot=virtual-server-theme passdelay=1 sudo=1 sessiononly=/virtual-server/remote.cgi preload=virtual-server=virtual-server/virtual-server-lib-funcs.pl virtual-server=virtual-server/feature-unix.pl virtual-server=virtual-server/feature-dir.pl virtual-server=virtual-server/feature-dns.pl virtual-server=virtual-server/feature-mail.pl virtual-server=virtual-server/feature-web.pl virtual-server=virtual-server/feature-webalizer.pl virtual-server=virtual-server/feature-ssl.pl virtual-server=virtual-server/feature-logrotate.pl virtual-server=virtual-server/feature-mysql.pl virtual-server=virtual-server/feature-postgres.pl virtual-server=virtual-server/feature-ftp.pl virtual-server=virtual-server/feature-spam.pl virtual-server=virtual-server/feature-virus.pl virtual-server=virtual-server/feature-webmin.pl virtual-server=virtual-server/feature-virt.pl virtual-server=virtual-server/feature-virt6.pl anonymous=/virtualmin-mailman/unauthenticated=anonymous premodules=WebminCore logouttimes= extracas=/etc/webmin/miniserv.chain certfile=/etc/webmin/miniserv.cert ssl_redirect=0 Here is a screen shot of the Webmin SSL config screen as well, for what it's worth: http://postimage.org/image/r472go7tf/ Edited Mon Oct 22 10:45:24 CDT 2012: When running the command openssl x509 -noout -text -in /etc/webmin/miniserv.cert as Falcon Momot suggested, I get the following error: unable to load certificate 139760808240800:error:0906D06C:PEM routines:PEM_read_bio:no start line:pem_lib.c:696:Expecting: TRUSTED CERTIFICATE

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  • VSS Post Backup failures for Virtual Server 2005 R2 SP1 virtual machines

    - by califguy4christ
    We've been seeing strange errors with Volume Shadow Copy services on our Virtual Server 2005 R2 SP1 host. It appears to be failing on a strange mountpoint in the C:\WINDOWS\Temp\ folders, which I believe is used by VSS to mount a writeable image file. To summarize: The Microsoft Virtual Server 2005 Writer continually goes into a failed retryable state The Virtual Server log reports errors during the Post Backup phase VSS reports errors backing up a mount point of unknown origins The mount point causes NTFS and ftdisk errors The host is x86 Windows Server 2003 Standard, SP2. The virtual machine is the same. Both use basic disks. Here is the writer state: Writer name: 'Microsoft Virtual Server 2005 Writer' Writer Id: {76afb926-87ad-4a20-a50f-cdc69412ddfc} Writer Instance Id: {78df98e2-bf19-4804-890b-15865efef3bd} State: [11] Failed Last error: Retryable error From the Virtual Server log: Virtual Server - Vss Writer - Event ID: 1035: The VSS writer for Virtual Server failed during the PostBackup phase. The guest shadow copies did not get exposed on the host machine, after mounting all the virtual hard disks of the virtual machine VMACHINE. From the Application log: VSS - None - Event ID: 12290: Volume Shadow Copy Service warning: GetVolumeInformationW( \\?\Volume{fb84bae7-87f5-11dd-9832-001cc4961ca6}\,NULL,0, NULL,NULL,[0x00000000], , 260) == 0x0000045d. hr = 0x00000000. From the System log: Ntfs - Disk - Event ID: 55: The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume C:\WINDOWS\Temp\ {fb84bae7-87f5-11dd-9832-001cc49.... My current theory is that VSS creates a mount point for an image file of the VHD, then the software panics for some reason, leaving everything in an inconsistent state. Removing the mount point doesn't resolve the problem. All of the other disks check out fine with CHKDSK. There's no exclusion option for VHDs or to turn off online backups. Has anyone seen this kind of thing before or point me in the right direction for getting more information about the mount point and it's origins? I haven't been able to trace what application is creating that mount point.

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  • Move "XP Mode" from Windows Virtual PC to VirtualBox?

    - by JoelFan
    I installed "XP Mode" in Windows 7 (which uses Windows Virtual PC to host XP). I have now discovered that VirtualBox, which I have installed on the same Windows 7 machine, refuses to run at the same time as Windows Virtual PC (it gives me an error about not running multiple visualization programs). Is there any way I can convert the "XP Mode" image so that it will run inside VirtualBox instead of Windows Virtual PC? That way I will be able to run XP as well as other VM's at the same time.

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  • How to talk to a virtual host on a guest OS?

    - by Bernd
    Let's say there is a host OS (Mac OS X) and a virtual machine running Ubuntu as guest OS. The guest OS has the IP 192.186.56.101 and some virtual hosts, e.g. ubuntu.server So, how to really map a request to the virtual host ubuntu.server on the guest OS? I tried: Configure the host OS in /etc/hosts to map ubuntu.server to 192.186.56.101 On the guest OS we have the trouble. It accepts the request for 192.186.56.101 which is not ubuntu.server and therefor the ubuntu.server virtual host will never be requested. Just the localhost on the guest OS. It might surely be possible to simply then use 192.168.56.101. But this would only work for one host per guest OS. Any idea? Or is there a bug in my train of thoughts?

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  • How do I install and use Window Virtual PC in Windows 8?

    - by KronoS
    I really like the integrated Virtual Machine that Windows had built-in with Windows 7 with Windows Virtual PC. I'm looking to install that again. I'd like to be able to install multiple machines as I did before (XP, Ubuntu, Etc,.) but I can't seem to find Windows Virtual PC for Windows 8 any more. Is it still available?, and if not was there something setup in place to replace it? How do I use it?

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  • How to hide a program that is running on a virtual machine?

    - by Femto Trader
    Some softwares contain tests to see if they are running on a virtual machine. It's very unpleasant to see alert messages such as "Sorry, this application cannot run under a Virtual Machine." and have your software stopped! There is a lot of legal reasons to override such tests. Moreover such limitations are (most of the time) not written in User License Agreement. So... how to hide a program that is running on a virtual machine? I'm using a Virtual Private Server (VPS) with Hyper-V... I'm administrator of the Operating System (Windows 2003) installed on this VPS, not administrator of Hyper-V.

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  • Running virtual machines: Linux vs Windows 7

    - by vikp
    Hi, I have tried running windows xp development virtual machine under windows 7 and the performance was dreadful. I'm considering installing Linux and running the virtual machine from the Linux, but I'm not sure whether I can expect any performance gains? It's a 2.4ghz core 2 duo machine with 4gb ram and 5400 rpm hdd. Can somebody please recommend very cut down version of linux that can run VMWare player and isn't resource hungry? Thank you

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