Tag Archive | KVM

Reviewing Ubuntu 17.10

Canonical recently made Ubuntu 17.10 available.  So I downloaded a copy to take a look.  This is the first Ubuntu release since they announced that Ubuntu would switch to the Gnome desktop instead of the Unity desktop that had been the default.  So we can take this as a first look at the new Gnome based Ubuntu.

Overall, I like it in a relative sort of way.  I do prefer it to the Unity desktop.  However, for my own use I will be sticking with openSUSE and KDE.

First looks

I’ll comment on installing below.  Let’s discuss the installed system.

On first glance, it looks similar to the Unity desktop.  There’s a panel on the left (called the “dock”), much as with Unity.  It is for “favorite” applications, etc.  It starts with “favorites” preselected by the Ubuntu team.  But you can add your won and you can remove applications that you don’t want.

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Install Tumbleweed into existing VM

Last month, I created a Tumbleweed Virtual Machine (or VM), using KVM.  Yesterday’s project was to install into that existing VM.  I wanted a clean install, retaining “/home” but reformatting everything else.

Fortunately, that previous install was for UEFI booting.  I’m not sure how easy it would have been to do new install into the same BIOS based virtual machine.

Downloading

I started by downloading the DVD installer for Tumbleweed snapshot 20171007.  As usual, I downloaded the sha256 checksum file with “wget”, and I downloaded the iso itself using “aria2c”.

I then verified the gpg signature on the sha256 checksum file, using gpg.  Then I used “sha256sum -c” to verify the checksum of the download iso file.

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Installing virtualized Tumbleweed

It was time for another Tumbleweed install.

This time, I decided to use KVM and install Tumbleweed into a virtual machine.

Downloading

As is my usual practice, I went to the Tumbleweed download site.  There, I found the latest image for snapshot 20170913.  I downloaded the DVD iso image (64-bit version) using “aria2c”.  And I downloaded the sha256 checksum file using “wget”.

Next, I used “gpg” to verify the signature on the sha256 checksum file.  And then I used “sha256sum -c” to verify the checksum of the DVD iso file.

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Creating a virtual machine

In my previous post, I explained how I setup KVM.  Today, I’ll describe creating virtual machines that run under KVM.

Creating with Yast

The easiest way to do this with openSUSE, is to use Yast.  Click on “Virtualization” and then on “Create virtual machines …”.

In the first step (step 1 of 5), you specify whether the source for the virtual machine is an iso file, a network install, a PXE network boot or an existing disk image.  For me, the iso file is the most suitable source.  On the second screen (step 2 of 5), I can browse for the iso file.

On the third screen, I can specify how much memory to use.  On my system, it defaults to 1G (or 1024M).  For my first install, I took that default.  Since that time, I have been upping it to 2G or 4G.  I can also specify how much CPU to assign.  I have 4-core machine.  This defaults to assigning 1 cpu.  I have been increasing that to 2 cpu.  For my first install, however, I left it at the default of 1 cpu.

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Installing KVM in Leap 42.3

Up until now, I have mainly tested other distros by installing them in a spare partition.  And I still see that as the most thorough way of testing.  So I didn’t bother with virtualization.

That has now changed.  I decided that it was time to give virtualization a try.

Which virtualization?

So where to start.  Many people use “virtualbox” as their way of doing virtualization.  I did consider that.  But I decided that it would be  better to use a method more directly supported by openSUSE.

Of course, “virtualbox” is supported, in the sense that it is in the repos.  So wanting openSUSE support doesn’t completely rule it out.  But it was not my choice.

The other main options are Xen virtualization and KVM virtualization.  There’s actually a useful guide available: Virtualization Guide.

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