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  • Performance issue when configuring non HA VM in cluster

    - by laiys
    Hi, I saw this article http://technet.microsoft.com/en-us/library/cc764243.aspx Quote taken from the link “ Important It is recommended that you not deploy virtual machines that are not highly available on your host clusters. Although you can do this by using Hyper-V (VMM does not allow it), the non-highly available virtual machines will consume resources that otherwise would be available to the HAVMs What kind of resources (CPU,memory, NIC, etc) that non HA VM will consume? Just curious as not all VM (in production) not to be in Failover Cluster and Live Migration. If i put the VM into CSV but did not make it as HA, what impact does it make since i allocate same vCPU, vNic and VMemory into the VM. (not to mention that i lost failover feature). Curious to understand more about this. Please advise. Thanks

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  • How to add URL's to wiki (MediaWiki) powered documentation?

    - by Ian Boyd
    We have an internal company wiki. The wiki engine being used is MediaWiki, the wiki engine that runs Wikipedia. Some of it contains IT stuff. One of the things i want want to have are hyperlinks to the various virtual machines. An example of a command, as it needs to run, is: vmrc://solo.avatopia.com:5901/Windows 2000 Server My first thought was to convert the URL into a link: [vmrc://solo.avatopia.com:5901/Windows 2000 Server] But the content renders literally as above: with the square brackets and all. Testing with other URL protocols: [http://solo.avatopia.com] [ftp://solo.avatopia.com] [ldap://solo.avatopia.com] [vmrc://solo.avatopia.com] Only the first two work, and are converted to hyperlinks. The other two remain as liternal text. How can i add URLs to MediaWiki powered documentation? Original Question We have an internal company wiki. The wiki engine being used is MediaWiki, the wiki engine that runs Wikipedia. Some of it contains IT stuff. One of the things i want want to have are hyperlinks to the various virtual machines. An example of a command, as it needs to run, is: \\solo\VMRC Client\vmrc.exe solo.avatopia.com:5901/Windows 2000 Server If launching from a command prompt, you have to quote the spaces: C:\>"\\solo\VMRC Client\vmrc.exe" solo.avatopia.com:5901/"Windows 2000 Server" My first thought in converting the above for use on our wiki-site, is to simply HTML-ify it: file://\\solo\VMRC Client\vmrc.exe solo.avatopia.com:5901/&quot;Windows 2000 Server&quot; but MediaWiki only converts file://\solo\VMRC to a hyperlink, the remainder is text. i've tried other random things, including enclosing the URL in square brackets. What is the correct answer? i don't want to happen to randomly stumble on some format that happens to work today, and breaks in the future.

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  • Any online network topology to study?

    - by Gok Demir
    I want to study network. But I don't have an access to a sample network (routers, DNS, IP4, IP6 windows linux mixed heterogenous system). Do you know any online network to study (Free as possible). Is it possible to simulate network topologies with a sing PC using virtual machine. If so could you guide me?

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  • virtualizing a .net application

    - by vvavepacket
    My professor ask me to create an application and it will be run on a machine without .NET installed. My application utilizes .NET 4.0 (just basic c# necessites but without the LINQ and complicated references) and he only wants executable file. So how can we run this application on his machine without install .NET (like the setup files and stuff)???? I was thinking of virtualizing via VMware ThinApp, but I find it difficult since it requires the application to be installed, yet my professor only wants the application to be in exe format (so thinapp cannot track the changes in my system). Any alternative? suggestions?

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  • Bridging VirtualBox over OpenVPN TAC adapter on Windows

    - by Sean Edwards
    I'm trying to configure a virtual machine (VirtualBox guest running Backtrack 4) with a bridged adapter over a VPN connection. The VPN is is hosted by the cybersecurity club at my university, and connects to a sandboxed LAN designed for penetration testing against various servers that the club has built. My host (Windows 7 Ultimate) connects to the VPN fine and is assigned an IP through DHCP, but for some reason the VM can't do the same thing, and I'm not sure why. It's like OpenVPN is filtering out packets from the MAC address it doesn't recognize. I want the virtual machine to bridge over the VPN connection, because our IT office has very strict policies about what you can and can't do on the network. I want to be able to run active attacks (ARP spoofing, nmap, Nessus scans) in the sandbox environment without risking the traffic accidentally going over the university network and getting my internet access revoked. Bridging over the VPN connection and running all attacks from inside the VM would solve that problem. Any idea why the host can use this interface, but the VM can't?

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  • Can I have a virtual firewall forward packets to another virtual machine on the same server?

    - by cowgod
    I currently have a web server running Apache using iptables for a firewall. What I would like to do is setup a new machine with XenServer and install two virtual machines--one running IPCop and one running Linux with Apache. Then I would configure IPCop to have the external IP address and forward port 80 to an internal IP on the second virtual machine. Is this even possible?

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  • How does the LeftHand SAN perform in a Production environment?

    - by Keith Sirmons
    Howdy, I previously asked this ServerFault question: Does anyone have experience with lefthands VSA SAN The general consensus looks like it does not perform well enough for a production SQL server even at a light load. So the new question is, How does LeftHand's SAN perform on the HP or Dell dedicated Hardware boxes? We are looking at the Starter SAN with 2 HP nodes in a 2-way replication, 2 ESX servers hosting a total of 2 Active Directory server, 1 MS SQL server, 1 File Server, and 1 General Purpose Server for things like Virus Scan (All Microsoft Server 2005 or 2008). The reason I am looking at LeftHand is for the complete software package. I plan to have a DR site and like how the SAN can perform an Async Replication to the offsite location without having to go back to the Vendor for more licenses. I also like the redundancy built into the Network Raid architecture. I have looked at other SANS and found different faults with them. For example, Dell's EqualLogic: Found that although the individual box is very redundant in hardware, the Data once spanned across multiple boxes is not redundant, if a node goes down you have lost the only copy of the data sitting on that hardware (One thing is certain, all hardware fails... When? is the only question.). I have used an XioTech SAN as well.. Well worth the money BTW, but I think it is overkill for the size of the office I am targeting. The cost to get the hardware redundancy in the XioTech makes it a little out of reach for the budget I am working in. Thank you, Keith

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  • How to install service packs onto Thin Apps and other questions

    - by Buzlightyear
    I have a VM that I use to do all my ThinApps, Once I have done my application and its built I copy just the bin folder to a server which has a share, I then create a shortcut to the program exe on users desktops. This all seems to work ok. Firstly is this correct? If so, how then do I apply a service pack to that application after the ThinApp VM has been reverted to a base image, I have corel draw which i have a service pack for but it wont intall it as its saying it cant find the package installed on the computer. I have Thinreg batch file so have included corel into that and the program appears in the program list. I have the sandbox redirected to the server share mentioned earlier into seperate user folders when the user logs in. Obvisouly once i have done a App I revert to a previous snapshop so my thinapp vm is back to base image, so the corel install is lost. Sorry if im missing something very simple. Is its a case if you have an exe/msp you have to reinstall the whole app again and start over, Thanks for any help.

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  • VmWare / Citrix Xen type environment vs Ubuntu Cloud / Amazon EC2 type environment.

    - by Nick Gorbikoff
    Hello. A bit of background. We run a small in house data center: about 20 virtualized servers (Debian Lenny, Windows 2003, Windows xp and Windows 7 machines), in a Citrix Xen pool running on 3 host servers and a SAN, plus a few standalone machines running legacy or specialized software that can't be vritualized. There is a big push everywhere now to move to cloud so we considering Ubuntu Cloud. I was wondering what are the pros / cons of running virtualized pool vs cloud to run all those machines? Thank you

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  • Command line is horribly slow in Ubuntu Server

    - by hekevintran
    I am running Ubuntu Server on VirtualBox. I am not using X Windows, only the command line. It looks like it is redrawing the screen for every line that causes the screen to shift down. In other words if there is empty space on the screen below the current line, it works normally, but if the current line is at the bottom of the screen, when the system moves to the next line it refreshes the whole screen line by line. This causes the system to run very slowly because I have to wait for the whole screen to refresh for every line and it hits the CPU at 90%. I installed Debian Lenny in VirtualBox and it didn't do this. Why does Ubuntu Server redraw the screen for each line? Is there a way to make this behaviour go away?

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  • CD-ROM Cant Be Accessed After Installing VMware Tools on VMware Server 2.0.2

    - by Optimal Solutions
    Using VMware Server 2.02, I set up a new VM (Windows XP Pro) applied all of the updates, added Windows addons from the install CD, etc... I got it to a stable point and up through that point I was able to access the CD-ROM drive (E: on my host). What I never did before was install "VMware Tools" and since it claims to give better mouse and video support, I gave it a shot. What it does is it places the install package in a virtual CD-ROM drive. I ran the install, no errors and it wants a reboot. I log back in after reboot and pop in the install CD for Microsoft Office 2003 and I receive the message "Please Insert A Disc Into Drive D:". Drive D: would be the next logical drive after the C: drive where I chose to install the OS. The message box sits there and if I click "Cancel", to return to Windows Explorer, the status bar seems to blink ever 1/2 second - as if its polling for a CD-ROM drive or something. No bangs or exclamations in the Device Manager for any hardware. I had taken a snapshot prior to the VMware Tools install and upon restoring it, the CD-ROM is back. I made copies of two other VMs, installed the VMware Tools on those VMs and both experienced the same issues: Windows 2003 Server and Windows 7 (32-bit). Has anyone seen this issue and know of a fix for this? It would be nice to have the better graphics and better mouse control AND use my CD-ROM drive as well! Thank you.

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  • Setting up CIFS ISO Repository for Xen

    - by user85610
    I recently started working with Xen, to try to make better use of an extra desktop box for development testing. I'd like to be able to do OS installs on it without having to burn discs, but I'm having some trouble actually being able to get it to boot OS ISOs from a Windows share. My Windows box is running Win 7, and it's on a domain. I created a CIFS ISO SR in Xen, specifying the correct username and password to use. Xen is able to scan the share, and I see the ISOs that are in the folder, and can select them in the list in XenCenter. However, when I try to start the VM, I get "Error: Starting VM 'linxcentos' - INVALID_SOURCE - Unable to access a required file in the specified repository: file:///tmp/cdrom-repo-hIz-H7/isolinux/vmlinuz." I tried booting a different Linux ISO and got the same result. I know that the ISOs are valid because I was able to install them without issue when I tried VMWare ESXi earlier. What am I missing here? It's Xen/XenCenter 6 and I'm trying to install the newest version of Centos. I may end up burning it for now, but I'd like to get this to work, at least just for the principle of not letting mysterious behaviors go unsolved...

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  • Running bridged-networking vmware player on a Linux machine with 2 interfaces

    - by Roman D
    I have got a laptop running Arch Linux with 2 interfaces: wireless (wlan0) and ethernet (eth0). I use wlan0 to access internet (static IP, networking is configured using netcfg), and I connect a second PC to the eth0. Now, whenever I start vmware player (v. 4.0.4), it chooses wlan0 to connect its bridged virtual NIC to, but I need it to connect to eth0 (I want my guest machine to be able to talk to the second physical PC on eth0). So, I disable the wlan0 interface (netcfg -d wireless) and restart vmware. Now, it connects to eth0, and everything works fine; I can ping the host PC from the virtual one, and I can ping the virtual PC from the second physical PC connected to eth0. Then, if I try to reenable the wlan0 interface (netcfg -u wireless), all of the connectivity between the host and the guest (and between the second physical PC and the guest) gets lost, until I disable wlan0 again. Can someone please give me a hint on what's going on?

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  • How to connect to the guest console via SSH without being admin on host?

    - by Sorin Sbarnea
    How can someone connect to a VM console via SSH, without being an admin on VM-host. This means that you should be able to see the guest boot screen and grub menu in a ssh session. That's important because in some cases you may need to fix the VM without having access to the VM-host admin console. Mainly this is about how you can have your own VM-guest which you can fully control but without having access to VM-host.

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  • Virtual Box fails my OSes :(

    - by Kingston Town
    I have a little problem with Virtual Box latest version in which i have installed Mint (also latest version).During creation of a new vdi partition I chose settings as default, that is, I don't create any tiny partitions myself. The installation works. But later while the new OS is running (not in Live mode) I try installing/updating new software available, the system automatically fails, it reports an error of DISKFULL, I close the message box then power off my system. Later on I can't boot it up again anymore. It hangs with a black screen and the PAUSE status. I have no idea why. I have installed 2 OSes and both fail at the same error. I doubt something is not right about the current version of VBox. Thank you . My host OS is Windows7 and my Clients are Mint and CentOS

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  • Sizing a Virtual Server

    - by vdubs
    I would like to replace four aging physical servers with one virtual server. What is the best way to insure the VM server is sized correctly? The requirements of the apps that will be running on the four servers are APPLICATION SERVERS - QTY 3 - These will run the application layer for the web server, Business Objects Business Intelligence app, and various other small client server apps. The three most heavy hitting apps each have the following server requirements. So, if I bought three physical servers, this would be the requirements for each of them Processor - Dual 2.83 GHZ (or faster) Ram - 4 GB Raid 5 - 50-100GB usable space NIC - 1 GB Web Server - this will run one asp.net e-business app that will talk to our dedicated SQL server and the three app servers above. The E-Business software has these requirements for the web server Processor - Quad 2.83 GHZ (or faster) Ram - 8 GB Raid 5 - 50-100GB usable space NIC - 1 GB What is the best tool to determine what I need from a hardware standpoing in a virtual server? I am planning on using VMWare.

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  • Need clear steps on how to convert a Windows 2000 Server to a XenServer VM

    - by Jay
    The source system is not local. The target host running XenServer is not local. The source system is running Windows 2000 Server SP4 and has 1 disk split into 6 partitions, all NTFS: C: 6 GB (boot) D: 15 GB E: 6 GB F: 6 GB G: 5 GB H: 26 GB Most of the partitions are mostly mostly full ( 60%). What is the most straightforward way to do a P2V migration of the server? I can do minor database & data syncs after the P2V is successful & running as a VM within XenServer, it's just getting to that point which is not clear. The option of installing a Windows 2000 Server from scratch is not available, I need to convert the existing physical server as-is into a VM to be hosted within a XenServer environment. I've looked at XenConvert but it maxes out on converting only 4 partitions in one shot, and I'm not certain how to account for the 2 extra partitions. I'm not familiar with XenServer but it's my only option right now to go P2V.

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  • Common and maximum number of virtual machines per server?

    - by Rabarberski
    For a project I am trying to get real-life estimates for the number of virtual machines per server, both typically and maximally. Of course, the maximum number of VMs would be depending on the type of applications (disk intensive, network intensive, ...), and server hardware (like number of cores, memory, ...), but still it would be useful to know if a typical maximum is about 10, 20 or 30 VMs per server. Can anybody give practical numbers?

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  • One bigger Virtual Machine in Cloud

    - by flyer
    I just setup virtual machines on one hardware with Vagrant (this is just a test environment, not production!). I want to use a Puppet to configure them and next try to setup OpenStack. I am not sure If I am understanding how this should look at the end. Is it possible to have below architecture with OpenStack after all where I will run one Virtual Machine with e.g. 12 cores? ------------------------------- | VM (12c) | ------------------------------- | NOVA | NOVA | NOVA | ------------------------------- | OpenStack | ------------------------------- | VM (4c) | VM (4c) | VM (4c) | ------------------------------- | Bare Metal (8c) | ------------------------------- I need this information to have a bigger picture to continue.

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  • RabbitMQ and persistence (blocking writes?)

    - by daharon
    I want to create a RabbitMQ server on a virtual machine (VMware) to be used in production. It will contain persistent queues. I'm wondering if it is a bad idea to store the server on a NAS that's accessed over NFS. Basically my questions are: Will RabbitMQ's writes be blocking? Will the entire queue's operation halt on a write? How much performance degradation should I expect when persisting over NFS?

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  • How to stop/kill a virtual machine that hangs in "Stopping" state?

    - by SvetP
    Hi, I have a virtual machine that constantly hangs in the “Stopping” state. I’ve red several posts suggesting killing the vmwp.exe process of the machine but I’ve never been able to kill this process neither from the Windows Task Manager nor from an administrative command prompt by using prockill /PID xxxx /F where xxxx was the process ID. The only result that I have is that my machine enters in “Stopping-Critical” state. Even worse, from that point (having a virtual machine hung at stopping) I am unable to manage (stop or start) any other virtual machine on the same host. The only “solution” in that case for me is to stop the Virtual Machine Management Service (vmms.exe) and to restart the physical host. Without first stopping the vmms.exe service my physical host also hangs during the restart. Moreover, there is no any error logged in the Event Viewer. I’ve found some other posts complaining about them problem. On all of them the only suggestion was to kill the vmwp.exe process, which obviously doesn’t work for them too. Can somebody help us with this, pls? Thanks

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