Configuration

Configure Network

By default, libvirt configures a default network, 'default'.
The 'default' network is attached to a private network, which provides NAT routing through the node's physical interfaces.
If you wish to use bridging, the default network can be removed by performing the following:
```
mcvirt network delete default
```

Networks provide bridges between physical/bridge interfaces and virtual machines.
To create a bridge network on the node, an additional network interface will need to be created on the node
This will generally be placed in /etc/network/interfaces

The following example should help with creating this interface:

auto vmbr0
iface vmbr0 inet manual
  bridge_ports <Physical interface>
  bridge_stp off
  bridge_fd 0

Where <Physical interface> is the name of the interface that the bridge should be bridged with, e.g. 'eth0'

To create a network on the node, perform the following as a superuser:
```
mcvirt network create <Network name> --interface <Bridge interface>
```
Assuming that there are not any VMs connected to a network, they can be removed using:
```
mcvirt network delete <Network name>
```

The first time MCVirt is run, it creates a configuration file for itself, found in /var/lib/mcvirt/<Hostname>/config.json.
The volume group, in which VM data will be stored as logical volumes, must be setup using:
```
mcvirt node --set-vm-vg <Volume Group>
```
The cluster IP address must be configured if the node will be used in a cluster (See the Cluster documentation):
```
mcvirt node --set-ip-address <Cluster IP Address>
```
In order for the MCVirt client to connect to the daemon, the hosts file at /etc/hosts must edited by changing the line:
```
127.0.0.1    <hostname>
```
to:
```
<Cluster IP Address>    <hostname>
```