Comments on How to install KVM on Ubuntu 14.04

Wow, logged in to see if you have a HOWTO for KVM on Ubuntu 14.04 and you posted one today!

What I could really use, though, is instructions on managment from CLI. I rent a dedicated server that I would like to use it with

 

A few tips:

* ALWAYS manually create a bridge and use that instead of the built-in bridge created by libvirt

* virt-manager can be installed on any Linux workstation on the network. It can manage a VM-host from anywhere in the world, provided ssh access is working.

* Some of the defaults for new machines aren't clear - for most Linux distros, use virtio drivers for networking and disk controllers for the best performance and lower resource use.  TinyCore doesn't know virtio drivers, so treat it like Windows and go with SATA and E1000 drivers.

* If using file local storage for the VM "virtual disks", disable buffering. Also, manually creating empty qcow2 storage before creating the VM provides efficient storage use and very fast performance. qemu-img create -f qcow2 is the start of the command for this.

do you have any instructions of bridging the network.  

* WHY always manually create a bridge? Please ALWAYS explain things with a reason, helps to understand if people do not want to simply obey, but want to understand.

Thanks!

@Spam. Thanks for this tips!

 

Also, I was getting some permission errors and KVM failed to initalized error. To fix this:

edit /etc/libvirt/qemu.conf change #group = "root" to group = "kvm"

Thanks for posting this! Really appreciate it.

Hello, Nice artical, However where did you install virt-manager? On a Desktop client or the server?

 

Thanks,

Michael

Here ya go Ron, I am sure you already got your answer but i have done this so many times it's in my memory now.

nano -c /etc/network/interfaces

You should see something like the following:

# This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 192.168.0.100 netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.0.255 gateway 192.168.0.1 dns-nameservers 8.8.8.8 8.8.4.4Change it to the following: # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet manual auto br0 iface br0 inet static address 192.168.0.100 network 192.168.0.0 netmask 255.255.255.0 broadcast 192.168.0.255 gateway 192.168.0.1 dns-nameservers 8.8.8.8 8.8.4.4 bridge_ports eth0 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp offThen reboot and your system should be ready to go.I hope this helps.

Has this (and other) article been scrubbed of all date info? When was this first published? Ever updated? Is this "date scrubbing" behavior normal for this WWW site?

The exact software version that an article is written for is mentioned in the title. This article is for Ubuntu 14.04. Excurse on Ubuntu naming schemes: Ubuntu encodes the date in it's name, so 14.04 means that this article has been written and tested for the Ubuntu version that got released in April (04) in the year 2014 (14). Ubuntu and other Linux vendors do not change the way a software gets configured within one version, so this article works for the named ubuntu version today in the exact same way that it worked in 2014 when it was written and it will work the same way for that Ubuntu version in 10 years. As you can see, it makes much more sense to name the exact software version a guide is written for as it is done here than writing a date, because someone can correct a typo today in an Ubuntu 12.04 guide so it ets an updated date from today and that article would still not work with Ubuntu 16.10. So when you seek for a tutorial, then seek for one that is written for the OS version that you use instead of looking at a updated date which says nothing about compatibility with your OS.