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• Guacamole on KVM

  - by Siem Hermans

  I currently run a deployment where I provide virtual machines to circa 25 users through ESXi over the VMWare WSX web portal. This works, no doubt about it, it is fast, stable and reliable enough for the end users. However I stumbled across the Guacamole project (Link: http://guac-dev.org/) and the KVM project (Link: http://www.linux-kvm.org/). I must say I am no genius when it comes to Linux but I am interested in replacing the ESXi and WSX combination with a Guacamole and KVM deployment. I have seen people across the internet use ESXi in combination with Guacamole (mostly prior to the release of WSX), but I have yet to see someone use it in conjunction with KVM. Considering my amount of knowledge on Linux in general I would like to ask: Is it possible at all to combine the two?

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• What type of VPS stats should I look for?

  - by Dave

  I have a few websites that average a total of 10,000 uniques a day across my network. I also have a few mobile apps that pull xml data maybe 5,000 calls a day. My sites aren't anything major just a few wallpaper websites and few other small sites, nothing real database intensive. I currently own a dedicated server and I feel like it's overkill for my network. I'm looking into getting a Virtual Private Server (VPS). I was just wondering what kind of stats I should be looking for to support my network of sites. Thanks

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• Cisco FC SAN switch decision

  - by Chopper3

  I've got to buy a bunch of FC SAN switches in the next week or so, I have to, and want to, buy Cisco MDSs. Servers are HP BL490c G6's in C7000 chassis with Virtual-Connect Flex-10 ethernet interconnects and VC FC interconnects (Emulex HBAs btw), all running ESX 3.5U4 (for now). I think I've only really got two choices; MDS 9509's with dual-supervisors with a single 48-port 4Gb FC card MDS 9222i's with single supervisor and the built-in 18-FC-port/4-GigE-FCIP-port option Both have the same functionality (I think, buying the enterprise licence btw), both have plenty enough performance and adequate ports for now and the next three years. The 9222i's are about 55% the price of the 9509's - logic says get the 'i's but will I really miss the dual-supervisors? I've got lots of 9509's with dual-supervisors that I'm very happy with but I'm not sure I've every benefitted from the dual-sups in the past and they are nearly twice the price - but if I don't buy them and miss them I can't retrofit them later. What are your thoughts?

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• CheckPoint SecuRemote / SecureClient on Vista 64

  - by cliff.meyers

  According to this page, CheckPoint's SecuRemote client is not supported on Vista 64: https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit%5FdoGoviewsolutiondetails=&solutionid=sk36681 Unfortunately in working with the systems team they will not confirm if the other two clients (SSL Network Extender or Endpoint Connect) are supported by their environment. Does anyone know if it would be possible to do the following? Install VMware Workstation on my Vista 64 system (host) install a Vista 32-bit OS in a virtual machine (guest) Install SecuRemote VPN client within the guest (Vista 32) Get my Vista 64 machine (host) to use the VPN connection from the guest Any other ideas are more than welcome.

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• startx doesnt run gives an error xauth unable to link authority files

  - by Sandeep

  I have installed windows xp on VPC and have installed cygwin-x on that virtual machine. When i run startx command. I get the following error: xauth: creating new authority file /home/Administrator/.serverauth.1480 xauth: unable to link authority file /home/Administrator/.serverauth.1480, use /home/Administrator/.serverauth.1480-n xauth: creating new authority file /home/Administrator/.Xauthority xauth: creating new authority file /home/Administrator/.Xauthority xauth: unable to link authority file /home/Administrator/.Xauthority, use /home /Administrator/.Xauthority-n xauth: creating new authority file /home/Administrator/.Xauthority xauth: creating new authority file /home/Administrator/.Xauthority xauth: unable to link authority file /home/Administrator/.Xauthority, use /home /Administrator/.Xauthority-n giving up. xinit: No such file or directory (errno 2): unable to connect to X server xinit: No such process (errno 3): Server error. xauth: creating new authority file /home/Administrator/.Xauthority

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• startx doesnt run gives an error xauth unable to link authority files

  - by Sandeep

  I have installed windows xp on VPC and have installed cygwin-x on that virtual machine. When i run startx command. I get the following error: xauth: creating new authority file /home/Administrator/.serverauth.1480 xauth: unable to link authority file /home/Administrator/.serverauth.1480, use /home/Administrator/.serverauth.1480-n xauth: creating new authority file /home/Administrator/.Xauthority xauth: creating new authority file /home/Administrator/.Xauthority xauth: unable to link authority file /home/Administrator/.Xauthority, use /home /Administrator/.Xauthority-n xauth: creating new authority file /home/Administrator/.Xauthority xauth: creating new authority file /home/Administrator/.Xauthority xauth: unable to link authority file /home/Administrator/.Xauthority, use /home /Administrator/.Xauthority-n giving up. xinit: No such file or directory (errno 2): unable to connect to X server xinit: No such process (errno 3): Server error. xauth: creating new authority file /home/Administrator/.Xauthority

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• Make cloudera-vm work on Oracle VM VirtualBox

  - by ????? ????????

  I downloaded this and the instructions say: Important: You must enable the I/O APIC in order to use 64-bit mode. (See http://www.virtualbox.org/manual/ch03.html.) On newer versions of VirtualBox, it may default to using SATA as the disk interface. This can cause a kernel panic in the VM. Switching to the IDE driver solves this problem. I am running this on Red Hat 64-bit mode (I've also tried on Ubuntu 64-bit with the same result). I pointed to the cloudera-vm image as a startup disk for the VM. I am getting this message: Failed to open a session for the virtual machine ClouderaDevelopment. VT-x features locked or unavailable in MSR. (VERR_VMX_MSR_LOCKED_OR_DISABLED). Result Code: E_FAIL (0x80004005) Component: Console Interface: IConsole {1968b7d3-e3bf-4ceb-99e0-cb7c913317bb} Does anyone know what I am doing wrong?

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• Accessing a website's directory in IIS from File Zilla

  - by Cdeez

  I have my Asp.net website deployed in my IIS's Virtual directory. Usually a FTP software like File Zilla is used to upload files to a website's directory from a remote system. File Zilla asks for a Host name, Username, password to connect to the remote server. Now all I want is my users in LAN should be able to access this directory from their system using FTP software like FileZilla. So how can I provide the Host name, username and password to my website's directory. I tried to find it on google but no help. Detailed steps please. Its IIS 5.1 version.

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• Manual Duplex for Mac (and/or Linux)

  - by chris_l

  Hi, my printers don't support automatic duplex printing. I'm looking for a solution for my Mac (BTW, also for Linux) that I've seen with most Windows printer drivers: Check "Manual duplex" in the printer screen Printer starts printing one side A dialog appears, asking me to flip the pages Printer prints the other side. One thing I can do, is "print odd pages", then reopen the dialog and "print even pages", but this is very inconvenient, especially when I only want to print a certain page range of the document (the Mac dialog forgets my previous page range every time). It gets even more inconvenient, when printing 2-up double sided, or when changing additional settings for this one printout. So is there maybe some tool, that can do this? Or maybe a "virtual printer driver" that can sit somewhere between the dialog and the actual printer driver, which manages these steps? (The Windows tool http://en.wikipedia.org/wiki/FinePrint can do something like that, but I don't need all of its features - and I need it on Mac/Linux) Thanks, Chris

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• Compiling the Linux kernel, how much size is needed?

  - by ant2009

  I have downloaded the newest most stable Linux kernel, 2.6.33.2. I thought I would test this using VirtualBox. So I create a dynamically sized harddisk of 4 GB. And installed CentOS 5.3 with just the minimum packages. I setup the make menuconfig with just the default settings. After that I ran make and got the following error: net/bluetooth/hci_sysfs.o: final close failed: No space left on device make[2]: *** [net/bluetooth/hci_sysfs.o] Error 1 make[1]: *** [net/bluetooth] Error 2 make: *** [net] Error 2 The amount of space I have left is: # df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 3.3G 3.3G 0 100% / /dev/hda1 99M 12M 82M 13% /boot tmpfs 125M 0 125M 0% /dev/shm My virtual size is 4 GB, but the actual size is 3.5 GB. $ ls -hl total 7.5G -rw-------. 1 root root 3.5G 2010-04-13 14:08 LFS.vdi How much size should I give when compiling and installing a Linux kernel? Are there any guidelines to follow when doing this? This is my first time, so just experimenting with this.

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• pam_ecryptfs: Error getting passwd (ProFTPD)

  - by Olirav

  proftpd: pam_ecryptfs: Error getting passwd info for user [USERNAME] I am getting this error in the syslog nearly every time any user connects via FTP, the user is able to connect and the session seems to continue without a hitch. ProFTPD.log shows no error, this warning only show in the syslog. My VPS is running Ubuntu 11.10 and Proftpd 1.3.4rc2 from the Ubuntu Repo, I have made only a few changes to the config (no weird auth methods). This has been going on for quite a while but I can't quite find the cause. Anyone got any ideas? EDIT: been looking around but all I can find with this error is the source code for the program itself; it appears to be and error in ecryptfs-utils that only proftpd is triggering.

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• Loggon to Internet Hotspot from within Linux Terminal

  - by Saif Bechan

  For internet I use a local Hotspot service. I have internet when I start my browser and fill in my username and password. This stays as long as I do not shut down my PC for a while. I run some virtual machines, centos, debian, from the command line. I run these just for small test purposes, nothing special, and security is not an issue for me at all. I want to have these VM's connect directly to the hotspot if this is possible. So they each have there own IP. I have enough hotspot accounts to do so. I can do this with a bridged connection in VMware which works find with a GUI. But I run these OS's from the command line. I only need to know a way how to get the hotspot to validate my credentials. Is there a way of doing this without having a gui.

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• Is Hyper-V Server 2008 working on Intel's Atom platform

  - by Josip Medved

  Did anybody try to install Hyper-V on Intel Atom platform? Hyper-V requires: x64 compatible processor with Intel VT or AMD-V technology enabled Hardware Data Execution Prevention (DEP) It seems that both requirements are satisfied with Atom as processor. However, I wonder whether there is some blocking issue (e.g. BIOS that does not support it) since all Atom motherboards I checked had quite old north/south-bridge. My intentions are to run two low-requirements virtual machines (embedded Linux), so performance should not be an issue.

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• CentOS and Snapshots

  - by Jonathan Sampson

  I'm planning on purchasing a virtual-dedicated server today and would like to pass a quick question by the community here before I do. I'm likely going to be getting CentOS, as that seems to be a pretty stable, and popular distro from what I can tell. One of the companies I contacted (MediaTemple) mentioned they provide snapshots just incase I start doing something that could potentially cripple my server - I could always restore the last snapshot. Another company (GoDaddy) said they would provide routine snapshots once a day, week, or month and back it up to a remote FTP for me to download. My question is this, is the "snapshot" capability provided in the OS itself? I'm not super-confident in my abilities yet to manage a server, so this functionality would be very attractive. Or, do I need to pick a host that provides this as an extra addon to the already rendered services?

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• Mac OS X: pushing all traffic through a VMWare VM [closed]

  - by bj99

  I want to set up an Astaro (Sophos) UTM in a Virtual Machine. The Setup should be at the end the following: Cable Modem (one IP adress) | [Ethernet] Sophos UTM (running as VM [VMWare Fusion 5] on the MacMini) | [WIFI] Airport Express v2 (for sharing Local Network to wireless and wired clients) 1)| [WIFI] 2)| [Ethernet over Thunderbolt Ethernet Adapter]* Clients MacMini (Local File Server) *To have the Mini also protected behind the UTM So the setup process for the UTM works fine, but then the problems start: I just have one external IP (from my cable modem provider)== So if I put the VM in briged mode my Internet connection drops, because the MacMini also has its IP adress. If I put the VM to NAT mode the Mini itself is not protected by the UTM So: is there a way to hide the en0 interface(Ethernet) and the en1 interface (Wifi) from the MacMini, so that they not even appear in System Preferences Network section but are available to the VM? That way the Mini must connect to the en2 interface (Thunderbolt adapter) to make any Internet/LAN connection and I just use the given single IP from the Cable Modem. Thaks for any suggestions... Sebastian

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• What does it mean to setup Postfix as "SMTP only"? [closed]

  - by BryanWheelock

  Possible Duplicate: What does it mean to setup Postfix as “SMTP only”? I am trying to setup Postfix a few different domains on a virtual host. I need to have email setup just to send out registration confirmations and new password requests. No one will have a mailbox on this server. It seems this means that I want to setup Postfix as SMTP only. I've also read about configuring Postfix null clients for simular needs. What is the difference between Postfix null client and SMTP only?

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• Cloud Computing - Multiple Physical Computers, One Logical Computer

  - by Koobz

  I know that you can set up multiple virtual machines per physical computer. I'm wondering if it's possible to make multiple physical computers behave as one logical unit? Fundamentally the way I imagine it working is that you can throw 10 computers into a facility one day. You've got one client that requires the equivalent of two computers worth, and 100 others that eat up the remaining 8. As demands change you're just reallocating logical resources, maybe the 2 computer client now requires a third physical system. You just add it to the cloud, and don't worry about sharding the database, or migrating data over to a new server. Can it work this way? If yes, why would anyone ever do things like partition their database servers anymore? Just add more computing resources. You scale horizontally with the hardware, but your server appears to scale vertically. There's no need to modify your application's infrastructure to support multiple databases etc.

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• Cloud Computing - Multiple Physical Computers, One Logical Computer

  - by bundini

  I know that you can set up multiple virtual machines per physical computer. I'm wondering if it's possible to make multiple physical computers behave as one logical unit? Fundamentally the way I imagine it working is that you can throw 10 computers into a facility one day. You've got one client that requires the equivalent of two computers worth, and 100 others that eat up the remaining 8. As demands change you're just reallocating logical resources, maybe the 2 computer client now requires a third physical system. You just add it to the cloud, and don't worry about sharding the database, or migrating data over to a new server. Can it work this way? If yes, why would anyone ever do things like hand partition their database servers anymore? Just add more computing resources. You scale horizontally with the hardware, but your server appears to scale vertically. There's no need to modify your application's supporting infrastructure to support multiple databases etc.

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• How does bridged networking work?

  - by agz

  How does bridged networking work? I have looked through the virtualbox manuals but nothing extremely technical came up (It was just a generic gloss over of the topic) How does it assign a different ip to the virtual machine but uses the same network card? Why does this different ip (I found using ip addr under linux) not show up under the "attached devices section" of my router but I can port forward to it? How come if I connect to a password protected wifi network, it does not require me to enter my password? Is this multihoming?

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• Remotely managing Hyper-V VMs from Windows 8 Client

  - by Vazgen

  Currently, I have a core Hyper-V Server hosting VMs for a domain controller and several domain-joined VDI infrastructure servers. The VMs are connected in that domain environment, but the remote management of the physical Hyper-V Server is set up using the same WORKGROUP (as the Windows 8 client I'm managing from) This makes it cumbersome to manage the VMs hosted on the physical server from my remote management Windows 8 client because I can only connect to the physical Hyper-V server and not the individual VMs hosted inside. Can I make my set up more flexible by hosting a second domain controller in a VM hosted on my Windows 8 machine and switching my remote management set up to use the same domain through? Meaning ALL physical and virtual machines including the VDI infrastructure under the same domain? I'm new to this just looking for some suggestions.

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• Unable to create context rendering error when run OpenGL application

  - by Rodnower

  Hello, I try to run Mesa gears example and I get following error: freeglut (./gears): Unable to create direct context rendering for window 'Gears' This may hurt performance. though the application runs successfully, but I guess that in future I will have much problems with productivity. I run Linux CentOS 5 on WMvare 7. Mesa's version is 6.5 Relevant output of lspci -v gives: 00:0f.0 VGA compatible controller: VMware SVGA II Adapter (prog-if 00 [VGA controller]) Subsystem: VMware SVGA II Adapter Flags: bus master, medium devsel, latency 64, IRQ 9 I/O ports at 10d0 [size=16] Memory at d0000000 (32-bit, non-prefetchable) [size=128M] Memory at d8000000 (32-bit, non-prefetchable) [size=8M] [virtual] Expansion ROM at 30000000 [disabled] [size=32K] Capabilities: [40] Vendor Specific Information Any one have idea? There is driver of vmvare for CentOS? Thank you for ahead.

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• Transferring Windows XP Mode VM to Another Machine?

  - by Omar Kooheji

  I've been running Windows XP mode on my Windows 7 Laptop for a while now and I've got my VM set up just how I like it. I am switchign laptops due to an intermittent hardware failure. Is it possible to transfer my Windows XP mode VM to my new laptop? I know it's just a Windows Virtual PC VM, how would I go about transferring it if this is possible? Will the Fact that I'm moving from Windows 7 Ultimate to Windows 7 Pro make a difference? AFAIK they both support Windows XP Mode.

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• Virtualbox PXE Boot Failing with a Windows Server 2008 R2 Server

  - by Vbitz

  Some fast help on this would be good, I have been on this problem for 14 hours. In a Virtualbox test environment I have 2 virtual machines networked together using a internal network (no traffic runs though the host, it is all at a software level). One is a fresh client with 512mb of ram and a dual core set-up, the other is the server with 1.5GB of ram and running server 2008 r2. The server is configured as a dns server, dchp server, domain controller and also serves PXE booting though WDS (Windows Deployment Services). Both machines can see each other and I am able to start a network boot. The issue comes at the second to last stage of the pre windows PE install. On TFTP download of boot.sdi it starts it but stops during the boot process.

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• Webkit based browsers on Mac refuse to load certain websites or resources, other browsers work fine from the same machine

  - by BergQuester

  OK, this one has really been puzzling me. Certain websites (such as instapaper.com ) or certain resources (such as the CSS and images for icanhazcheezeburger.com sites) refuse to load at all in Safari or Chrome on any of my Mac machines. Rebooting the machine doesn't fix it. If I use another browser, such as Firefox or a browser on my iPhone or in my Windows virtual machine, the pages load just fine. When the whole page errors out, Safari displays an error: "WebKit encountered an internal error" WebKitErrorDomain:300 This is all from within my home network. Any ideas what could possibly be causing such bizarre behavior?

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• smartctl or hddtemp for xvda [on hold]

  - by HST

  I'm trying to check the state of the drives on a remote server running Debian wheezy. I'm using a software RAID10 on top of, I guess, xen, since the entries in /dev are /dev/xvda and /dev/xvdb But it I try smartctl -a /dev/xvda I get /dev/xvda: Unable to detect device type Smartctl: please specify device type with the -d option. I've tried various device type guesses, none work Similar problem with hddtemp, which reports ERROR: /dev/xvda: can't determine bus type (or this bus type is unknown) I've searched the smartmontools documentation, but can't find any discussion of virtual disks. . . How do I get behind the virtualisation to something smart tools or hddtemp can work with?

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