You will need to adjust the IPs and subnet mask for this to fit your subnet.Ī IPv4 netmask cheat sheet can be found here. Run the following command to create the network.xml file. So if we were using the subnet 139.178.66.144/29 which has 8 total IPs, the IP allocation would be as follows.ġ39.178.66.145 - Gateway for the VMs / KVM host bridge addressġ39.178.66.146-150 - Range of usable IPs for VMs (5 in the case of a /29) The order in which we add our IPs matters! So have a look at the screenshot above to see which IP goes where in the configuration.įor subnets of size /30 or greater, there are 3 IPs that cannot be used for your VMs, the network address (first IP), the gateway (this is the host bridge), and the broadcast address (last IP). xml file called network.xml in our root directory. The configuration needs to be in XML for this example, we're creating a. We'll be using the net-define command to configure the virtual machine. In your Equinix Metal dashboard click on your KVM's host name, select Network on the left hand menu and then select the + Assign New Elastic button on the right. But we're not doing that here! We want our virtual machines to have their own public IPs so we will define our own network in an XML file. It will usually assign .x IPs to the virtual machines you create. By default, libvirt comes with a preconfigured NATed network. With either configuration, you'll need to create a bridge network. In Route mode, each virtual machine gets their own public IP. In NAT mode, each virtual machine gets a private IP and communicates with the public internet via the host's public IP. When configuring the network for your virtual machines you can choose to run in NAT mode or in Route mode. Once you're done you can verify the install is successful by running kvm-ok. $ apt install bridge-utils qemu-kvm virtinst libvirt-daemon virt-manager -y libvirt: The system daemon managing your VMs for you.bridge-utils: used to create and manage bridge networks.virtinst: a suite of command line tools for installing and managing virtual machines with the operating system of your choosing.Once you're SSH'd into your server as root you'll need to install several packages to create and properly manage virtual machines. The elastic IPs are entire reserved for the virtualization layer. The server will automatically be assigned one public IPv4 and one public IPv6 address which we'll use as the management addresses for the KVM host itself. Do not add the /29 IPv4 block to the server at this point, we will assign it later on. Once you're logged into your Equinix Metal Dashboard navigate to deploy a new c3.small.x86 server in the region that suits you best. Deploying The Server and Installing Virtualization Software You can request the IP block from our portal. Also, you will need a public /29 IPv4 block assigned to your account if you plan to route public traffic to your virtual machine. Note: This installation is completed entirely using the command line (no GUI!). We'll also show you how to expose your virtual machine to the public internet with an elastic IP.Īll of Equinix Metal's hardware can be virtualized but for this guide, we'll be deploying an Entry Level & All-Arounder server with Ubuntu 20.04 installed. Turns out booting virtual machines from scratch using the KVM hypervisor with the virtualization manager Libvirt has some gotchas! We'll dispel any of that with this guide.
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