Posts tagged virtualization

Ruby Rails - Could not find a JavaScript runtime

April 21, 2012, 1:22 p.m. JavaScript , Ruby , virtualization

I recently had a series of posts on learing Ruby in less than 48 hours. I managed to do so in spite of running into considerable issues with installation of Ruby or various Gems. But those issues are nothing in comparison to the stumbling blocks and pitfalls the RoR trail.  In the end what worked wa ...

Android 4 on VirtualBox

Feb. 23, 2012, 12:29 p.m. Android , virtualization

Yesterday's attempt to install Ice Cream Sandwich as a guest OS on VirtualBox didn't quite work out. I kept digging and came across a a post on that's geeky where the blogger had attempted to build a VM starting with the Android sources. Well apparently that blogger's day job doesn't involve compute ...

Ice Cream Sandwich on VirtualBox

Feb. 22, 2012, 1:28 p.m. Android , virtualization

My netbook has a really ancient version of Android (rarely used) so I thought to download and try out Ice Cream Sandwich on it, but first let's try running it on VirtualBox because it's always less painfull than countless reboots associated with installing a new OS. And predictably I ran into troubl ...

Who is the victim?

Sept. 30, 2011, 10:14 a.m. cloud , virtualization

So The Site With the LAMP had three outages in three days. Did I say three in three? But my previous post mentioned only two? Sorry about that. There was another one immediately after that was publish.  In all three occasions downtime was caused by a surge in demand for Amazon EC2 spot instances.  E ...

Adobe Air on 64bit systems

Jan. 15, 2011, 7:22 a.m. air , RIA , Ubuntu , virtualization

What's the most god damned piece of software that you might have to install on a 64 bit linux system? It's either Adobe Air or Adobe Flash. Of course there are free alternatives to adobe flash like gnash, but they are much worse. My solution for flash is to live without it, but unfortunately I need ...

Have we been misled about cloud hosting?

June 12, 2010, 4:31 p.m. JavaScript , virtualization

Amazon recently announced that S3 support has been enabled in the AWS management console. Sounds great. Except that it doesn't work. Once you click on the S3 tab in the console the process seems to hang. The reason amazon and other cloud hosting companies want us to switch over to the cloud is becau ...

Encrypted filesystem on linux

June 10, 2010, 1 p.m. Centos , fuse , security , steganography , virtualization

Six years ago, I had a post with this exact same title. At the time it was about making a crypto loop. Cryptoloop allows you to create a large file, ecrypt it and then mount it with the help of a loop back device as a file system. The contents cannot be seen without the proper password. Truecrypt is ...

Cloud Hosting : Making sense of the pricing

April 17, 2010, 11:07 a.m. cloud , virtualization

With many companies entering the cloud hosting market, competition is hotting up. So much so that the most recognizable name in the game, Amazon EC2 has had to reduce their prices several times and recently introduced a cut rate spot pricing model. Competition specially for the entry level packages ...

Centos 5.4 , PHP 5.3 and Harvard Referencing.

March 1, 2010, 11:45 a.m. Centos , cloud , deadinedue , virtualization

A couple of days back, we did an update to Deadlinedue, the Harvard reference generator, the moment the database was updated and the new code was put in place, PHP started segfaulting. It was time to decide whether to roll back or press forward. I chose the latter and it resulted in the site been of ...

Fedora 11 on amazon ec2

Feb. 1, 2010, 7:14 a.m. virtualization

Amazon has been offering cloud hosting services for longer than most unfortuntely they don't seem to have updated their Amazon Machine Images since they started operation. Well, it's not exactly accurate, they have reasonably upto date images for some linux distributions and for windows. However man ...

Cloud hosting

Oct. 21, 2009, 11:33 a.m. virtualization

If you believe everything that cloud hosting companies tell you, thanks to them, small businesses, startups or someone trying out an online venture no longer needs to invest a fortune on servers. In actual fact, the credit for that should go to the thousands of small web hosting companies that made ...

Go Grid vs Amazon EC2

March 13, 2009, 6:47 a.m. virtualization

Go Grid is an alternative to Amazon EC2 and if you go purely by the explanation on the Go Grid website it's cheaper and better than EC2.  Certainly there are some areas in which Go Grid is miles ahead of EC2. Their web based control panel is one example. Even a die hard geek can be put off by the EC ...

Amazing speed of Amazon virtual drives

March 7, 2009, 5:04 a.m. virtualization

Though people are always coughing up large sums of money, the real bottleneck in both servers and desktop computers is the hard drive. Hard drives find it hard to deliver data as fast as they can be processed. With servers you sometimes find that your network capacity is also used up well before the ...

Video Howto : Fedora 10 Installation

Dec. 5, 2008, 1:19 a.m. video , virtualization

I am ashamed to say this but some of my best friends and even my own mother still uses windows. Even those friends and relatives who are fed up with Windows are strangely reluctant to switch. They are asking whether it's possible to dual boot windows and linux. Dual boot is the stone age way of doi ...

Old dogs can learn new tricks

Nov. 29, 2008, 1:57 a.m. virtualization

Yep, you live and you learn. For years I thought you can invoke fdisk only on a physical hard drive. How wrong I was! You can invoke it even on a file (you will then have to manually set cylinders etc etc). This is very usefull when working with Qemu images.I didn't know that dd had a 'sparse' optio ...

Virtual Box on My Media Server

Nov. 27, 2008, 1:33 p.m. virtualization

After using VirtualBox on my desktop for a while I wanted to try it out on my file server. The desktop has a an Intel E6400 CPU but the imagess actually reside on my file server rather than on the desktop itself (I have gigabit ether). I wanted to install VirtualBox on the file server which has an I ...

Kernel Error After VirtualBox Wakes up

Nov. 26, 2008, 3:51 p.m. virtualization

Things go haywire with VirtualBox when the host system wakes up from sleep. Message from [email protected] at Nov 17 15:10:33 ... kernel: Code: c0 0f 30 58 8e d8 58 8e c0 5b 41 5c 41 5d 41 5e 41 5f b8 5b f0 ff ff e9 e9 fe ff ff cc cc cc cc b8 ff ff ff ff 48 21 c7 48 31 c0 <0f> 79 fe 73 06 b8 ...

Four Crashes in a Day

Nov. 23, 2008, 4:19 p.m. bootstrap , green , virtualization , X11

The last time my computer crashed (that is totally froze up) was back in May. Today I have had four freezes with in hours of each other and I am pointing the finger at Fedora 10.Twice the machine crashed when it went to sleep. If the computer sleeps, it doesn't wake up again. The screen gets garbled ...

Samba SWAT

Nov. 23, 2008, 2:38 a.m. virtualization

I have mentioned here and there that I am using usmb to mount remote folders. It was only after a little bit of head scratching that I manged to figure it out though. Samba server is one of those things that I never really learned to setup/use. So I decided to take the easy way out and to install t ...

Fedora 10 Live Update vs Jigdo Download.

Nov. 20, 2008, 3:14 p.m. broadband , virtualization

The other day, I spoke about upgrading from Fedora 9 to 10 using YUM. The reason that I chose this approach was because I wasn't keen to watch while Azureus or Jigdo painstakingly downloaded the DVD bit by bit. The DVD contains a lot of useful software and it also contains loads of software which I ...

Fedora 9 to Fedora 10 (with Yum)

Nov. 18, 2008, 12:53 a.m. virtualization , X11

The last time I tried to use Yum to upgrade from one version of Fedora to another it didn't exactly work out. This time I thought I would try it out first in a virtual machine. If something goes wrong just delete the VM. When trying something like this,  you should make sure that the keepcache sett ...

From Qemu to VirtualBox?

Nov. 17, 2008, 10:36 a.m. bootstrap , virtualization , X11

While trying out VirtualBox I wanted to use the existing Qemu images to save me the trouble of having to carry out new guest OS installations. Sadly, qmeu images will not work out of the box with VirtualBox. Though it's not possible to directly convert them to VirtualBox (vdi) images with Qemu, can ...

VirtualBox.

Nov. 17, 2008, 2:40 a.m. virtualization

After having a spot of bother with Qemu and on the recommendation of a fellow geek, I considered switching to Virtual box. The 64 bit version of VirtualBox is labeled as being for AMD processors. Therefore I opted for the 32 bit version. When I tried to install it with 'yum localinstall VirtualBox- ...

Qemu and Lost Mouse Pointers

Nov. 16, 2008, 9:49 a.m. virtualization

Recently, I installed DSL - Damned Small Linux on as a guest operating system under Qemu and found that the mouse and the keyboard wouldn't respond after the boot up process had been completed. At the time I concluded that it is a quirk in DSL and gave up on it. ...

Boot Up Time and Overclocking.

Nov. 14, 2008, 1:05 a.m. bootstrap , virtualization

In my opinion overclocking is just a waste of time and a sure way of reducing the life time of your CPU and possibly even your VGA card and RAM. The real bottleneck in modern computers is the hard drive and RAM. Memory is so cheap now it's crazy  to spend a load of money on a more expensive processo ...

Improving Fedora boot up time

Nov. 11, 2008, 2:35 p.m. bootstrap , virtualization

Looking at the boot up time of my Fedora 9 Desktop, I found it to be a rather disappointing 59 seconds. I managed to reduce that somewhat by optimizing the firewall startup script and killing off a few services that I don't like don't want.Optimizing boot up time is a tedious process and I hate to r ...

NTFS on Linux

Nov. 9, 2008, 3:06 a.m. virtualization

It's been a long long time since I last created an NTFS partition.  Just created one - but windows is no where in site. The partition was created with cfdisk as usually and formatted with mkfs.ntfs - how easy things have become. I remember struggling a long time ago to mount NTFS partitions while us ...

Fedora Lame Virtualization?

Nov. 8, 2008, 1:36 a.m. virtualization

First time I used virtualization was long long ago when I was in fact on windows and booted linux inside it. Then I switched completely over to linux and had trouble doing the reverse - running windows inside linux. Sure wine was around at that time but it's not exactly a virtualization system and i ...

Lame Virtualization messes up grub.

Oct. 28, 2008, 11:12 p.m. virtualization

I tried to setup Xen virtualization on my media server and ended up with a messed up boot loader. There isn't a Fedora 9 xen installation guide, so I followed the instructions for Fedora 8. Part of those instructions include setting up the Xen kernel. So I did that and it updated my grub.conf file. ...

Qemu on OS X.

Dec. 5, 2006, 3:02 a.m. Macbook , virtualization

Tried to install Qemu on OS X. Apparently it's unavailable. There is a link from the qemu site to a OS X port at free os zoo unfortunately that throws up a 404 error. Then I came across Q [kju], another port.As with everything else on OS X installation is straightforward, I even managed to copy am i ...

Ubuntu Take 2.

July 6, 2006, 10:40 p.m. religion , virtualization

The Ubuntu installation I was spoke about in a recent post was actually on a friend's computer. He wanted me to install linux for him and I thought I would experiment at his expense :) The experiment was short lived. Ubuntu was uninstalled and trusty old Fedora Core was installed over it.Not many p ...

The Fedora Core 5 Experience.

April 9, 2006, 10:51 a.m. virtualization

I have been using Fedora Core 5 for a few days now. Things didn't get off to a good start with the first boot ending up in failrure Finally when the login screen appeared it did look heaps better than the previus version but beauty is only skin deep.Having logged on for the first time, I didn't exac ...

Qemu and Tun/Tap mystery

Feb. 9, 2006, 8:09 a.m. toast , virtualization

The domino effect from the DriveReady SeekComplete Error continues. First I had to repartition the two 'good' hard drives and make some space to move the stuff from the dud hard disk onto them. Then several CDs backups were also made. This was followed by upgrading the kernel, which naturally result ...

Bad Sectors, Pear, Qemu and Darwin

Feb. 7, 2006, 4:48 a.m. toast , virtualization

I obviously have a faulty hard disk on my hands, the log files say this is a kernel bug, reiserfs faq says it's a hardware fault. The latter is most definitely the case, but hope springs eternal in the human heart so it's tempting to upgrade the kernel and hope it will go away. Well it did go away a ...

Looking Glass

Oct. 3, 2005, 4:42 a.m. virtualization

Looking Glass is a very interesting idea by a developer at Sun. I can't wait till it's mature enough for day to day usage, so tried the live cd.Tried to start Looking Glass as a guest of Qemu. Unfortunately it didn't meet with much success. The system would boot, it would go into what appears to be ...

more FC4 woes

Aug. 20, 2005, 8:52 p.m. virtualization

Fedora Core 4 does not install the kernel sources as it should. It' probably time to switch to Debian but in the short term I need to make qemu work but that looks like a lot of hard work.As for compiling a new version of the kernel from scratch, I have done enough of that in the to be thoroughly si ...

Qemu on FC4

Aug. 13, 2005, 3:35 a.m. virtualization

Since upgrading to FC4 kqemu the, accelerator could not be used (since it's not compatible with the new kernel). That effectively means Qemu cannot be used at all because with out the accelerator the emulator is too painfully slow.Unfortunately attempting to recompile again did not work out because ...

FC4: Hey where is my menu

Aug. 9, 2005, 8:19 p.m. virtualization , X11

After overcoming several pitfalls I successfully managed to boot up my Fedora Core 4 installation. Unfortunately it seems the worst is still to come.My first reaction after KDE started up was "Hey what have you done with the menu?". All the menu items have gone missing. As usuall google was of no us ...

Qemu and networking

May 25, 2005, 8:38 a.m. virtualization

It is said that a qemu guest operating system can talk to it's host operating system through the network with the help something called tun/tap, something which I am ashamed to say I have never heard of before.Configuring network cards, ppp or routing tables has never been my strong point, so TUN/TA ...

Qemu

May 21, 2005, 10:33 a.m. virtualization

Just downloaded 0.7.0 of qemu. Looks like there have been two releases since the last time I tried it out. Improvements include a step towards Mac OS X support.Last time around I didn't have much success with it partly due to a lack of patience on my part. The documentation being very cryptic didn't ...

opendarwin on pearpc

Dec. 19, 2004, 8:30 p.m. virtualization

Having installed PearPc a couple of days ago, I decided to have a go at installing opendarwin as a guest operating system. It turned out to be a much more pleasent experience than installation of opendarwin as a OS that stands on it's own feet.PearPC is a PowerPC emulator for linux. You can install ...