Computer Tips -Tech Info

Category: Virtualization

  • Various Notes | Morse Code Ringtones | Java updates | More Pages on the Way

    Sorry for the vague title, but there are various thoughts floating around at the moment. The first is a big thanks to the support at Westhost for recovering my VPS over the last weekend. I had started an automatic upgrade of wordpress in one of the sites hosted in this vps, it hung… so I ssh’ed in and found the vps was essentially ruined – it managed to wipe out quite a bit. I’m not sure if it was a coincidence or if the wordpress upgrade was really the culprit, but it managed to destroy quite a bit. The support at westhost though had things back up within 24 hours. It wasn’t just a matter of the site and database getting deleted, but files in /etc were gone (mail configuration hostname resolution wasn’t working, scp wasn’t working…. it was trashed in a bad way.)

    Anyway, I’ve still been tinkering with the free morse code mp3 ringtones. In particular I’ve been tinkering with the Text to morse code mp3 generator. I’ve been trying to add utf support. The backend generator does interpret morse for utf characters, I’ve managed to get a way to decode the url encoding if they’re placed in the text box, my big challange at the moment is the file name. I have to truncate the filename so that it’s not too long, but most everything I’ve tried to truncate counts bits instead of characters. Some, even if I tell it to count characters will assume that 1 character=1bit and I wind up with some of the utf characters cut short which gives unusual filename results. In the testing version of the script I’ve just decided to sanitize things by replacing an extended character with an x….

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  • Custom livecd’s, virtualbox, seamlessrdp and sata dvd burners…

    I thought this writeup was interesting on the idea of using a web interface to customize a livecd. I’ve built a couple livecd’s (that I still use) for tech support, but I’m always thinking of one more tool that I’d like to have. After looking through their wizard it seems a bit limited in the granularity of what can be chosen (at least for what I’m thinking of.) But… it might introduce a new interest in the use of livecds.

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  • Vmware server install on Ubuntu Dapper

    I thought I had already posted this, but I looked the other day and didn’t find the article, so I’m posting it now… if it’s a duplicate, sorry… I’m still using Ubuntu’s Dapper Drake 6.06(.1) as a base install for many things… the Long term support idea fo rthe server “stuff” is somewhat reassuring and I don’t want to be chasing minor revision upgrades every 6 months. But, there is another reason, a lot of the installs I’ve done have been a base for VMWare server and there are some very good (and clear) how-to’s in that arena….howtoforge has a good walkthrough that I’ve used as a starting point….

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  • Virtualbox virtualization open source availability

    This last week virtualbox announced that they have released a version of their virtualization software as open source. There is a pay version as well with more features. (*read on for features available in the full version.)

    While I appreciate them making the core virtualization open source and currently they are likely the most advanced open source virtualization software out there… it is a bit disappointing to see some of the really juicy features in the non-open source version. However, it should be noted that the full version is free for personal use or evaluation.

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  • VMware guest unable to access USB devices

    I ran into this some time back and found the solution a few months later and was reminded today to document it here…. The situation is this… Linux host for VMWare server, the guest machine has usb support and in vmware, you can go to VM, Removable devices and in spite of the fact you have usb devices on the system, nothing is listed as available to use in the VM. Well, it seems this is not an isolated problem. First you need to be sure the usb device is not in use by the host system. But, there’s something else that you need. VMWare uses usbfs to keep track of usb devices and a few distributions ( Ubuntu Linux 6.06 SUSE Linux 10.1, SUSE Enterprise Linux Server 10, Mandriva Linux 2006, SLES9 SP3 64 bit) don’t enable it by default. ( mount -t usbfs none /proc/bus/usb ) should do the trick (as root) or you could set it in fstab usbfs /proc/bus/usb usbfs auto 0 0 (and now I’m thinking I may have already posted this once…. )

  • Vmware Server web interface tricks…

    I haven’t been overwhelmed with VMware server’s web interface. You can start a virtual machine, or see statistics, but you can’t create virtual machines. Well, from the VMWare forums I did find a couple interesting “hidden” features. First, is a file manager at https://youriphere:8333/fm-properties and second is a GSX interface (which gives the ability to create a NEW virtual machine) at https://youriphere:8333/overview (the direct link to creating a new vm is https://yourip:8333/vmcfg-gsx )….

  • Live filesystem “capture” into a virtual disk image

    ah… the joys of *nix utilities…. I’ve just successfully tested a “capture” of a live, running system into a virtual disk image. No, I don’t mean that I booted up with an imaging utility. I took a live, booted and logged in system and imaged the primary hard drive that it was living on, into a file on another machine. (Yeah, I know, there are probably a few people reading this and saying they’ve done that and most people that would need to do this already know how…. sorry I missed the memo.) Not too long ago, VMWare released a tool to do something like this (that tool is for windows…) This should work on any platform that supports dd and netcat (although I’m not sure if piping output from one program to another works with a dos command shell – maybe cygwin would be a good environment to accomplish this with.) Anyway… here are the details.

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  • Virtual Machine of a real hard drive

    This incidents.org article the other day caught my eye. It talked of a utility calledliveview that could take a hard drive (or image of a drive) and make it into a virtual machine for use in vmware (saving all changes to a temporary file so the original structure of the disk/drive image is not touched.) It looks like you need to have Windows as your base platform, but it looks as though it would be a useful tool. Windows Incident Response possibly saw the same note on Incidents.org.

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  • Vmware coming to Mac soon…

    It looks as though VMWare is looking to test some of their software for the Mac. Unlike Parallels desktop, Vmware’s offering will be geared more towards a corporate environment.

  • VMWare server 1.0 final release

    I’ve been keeping an install of Vmware virtual Server through their beta and Release Candidate phase and have seen several places that they’ve released the 1.0 version today. This release is free (as in no charge.) Although support is available….

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