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→Networking: Added Ubuntu 18 instructions
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This guide assumes you have a working Ubuntu Server with one physical NIC that will used for networking to the host server, and also for a bridged network for guest virtual machines. | This guide assumes you have a working Ubuntu Server with one physical NIC that will used for networking to the host server, and also for a bridged network for guest virtual machines. | ||
Ensure your server has CPU's that support hardware virtualisation, you should get one output of flags per CPU (which will include either <code>svm</code> or <code>vmx</code>) | Ensure your server has CPU's that support hardware virtualisation, you should get one output of flags per CPU (which will include either <code>svm</code> or <code>vmx</code>). If you don't, reboot the server into BIOS and see if there is an option to enable CPU Virtualisation features or VT, if you don't your hardware may too old to support virtualisation. If your hardware is recent, it should, so consult your vendors documentation (either for the server, or for the server's motherboard). | ||
egrep '(vmx|svm)' /proc/cpuinfo | egrep '(vmx|svm)' /proc/cpuinfo | ||
Ensure your server can run KVM hardware acceleration. Install <code>cpu-checker</code> and run as follows... | |||
apt install cpu-checker | |||
kvm-ok | |||
...which should return... | |||
INFO: /dev/kvm exists | |||
KVM acceleration can be used | |||
== Installation == | == Installation == | ||
Install using the following command | Install using the following command | ||
apt | apt install qemu qemu-kvm libvirt-bin bridge-utils virt-manager | ||
Once completed, ensure libvirtd is running | |||
systemctl status libvirtd | |||
== Networking == | == Networking == | ||
By default, you'll end up with a new <code>virbr0</code> interface, on which all virtual machines will be deployed to. These will not be accessible to the outside world, which is sometimes fine for a private lab environment, but otherwise fairly useless. In order to all your VMs to be accessible, you need to create a new bridge interface, and move your server's IP address onto that. Once done, VMs can also be provisioned onto the same interface, and will be as accessible as your KVM server. | |||
=== Ubuntu 18.04 === | |||
Network config is achieved via Netplan, for an existing config such as show... | |||
<pre> | |||
root@kvm-svr:~# cat /etc/netplan/50-cloud-init.yaml.orig | |||
# This file is generated from information provided by the datasource. Changes | |||
# to it will not persist across an instance reboot. To disable cloud-init's | |||
# network configuration capabilities, write a file | |||
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following: | |||
# network: {config: disabled} | |||
network: | |||
ethernets: | |||
eno1: | |||
addresses: | |||
- 192.168.1.50/24 | |||
gateway4: 192.168.10.1 | |||
nameservers: | |||
addresses: | |||
- 192.168.1.1 | |||
- 8.8.8.8 | |||
- 8.8.4.4 | |||
search: | |||
- vwiki.co.uk | |||
version: 2 | |||
</pre> | |||
...add a new bridge network and move most of the config over... | |||
<pre> | |||
root@media-svr:~# cat /etc/netplan/50-cloud-init.yaml | |||
# This file is generated from information provided by the datasource. Changes | |||
# to it will not persist across an instance reboot. To disable cloud-init's | |||
# network configuration capabilities, write a file | |||
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following: | |||
# network: {config: disabled} | |||
network: | |||
version: 2 | |||
ethernets: | |||
eno1: | |||
dhcp4: no | |||
dhcp6: no | |||
bridges: | |||
br0: | |||
interfaces: | |||
- eno1 | |||
dhcp4: no | |||
addresses: | |||
- 192.168.1.50/24 | |||
gateway4: 192.168.1.1 | |||
nameservers: | |||
addresses: | |||
- 192.168.1.1 | |||
- 8.8.8.8 | |||
- 8.8.4.4 | |||
search: | |||
- vwiki.co.uk | |||
</pre> | |||
...and apply using... | |||
netplan apply | |||
== Configuration == | == Configuration == | ||