Network node

To configure networking:

Configure the first interface as the management interface:
IP address: 10.0.0.21
Network mask: 255.255.255.0 (or /24)
Default gateway: 10.0.0.1
Configure the second interface as the instance tunnels interface:
IP address: 10.0.1.21
Network mask: 255.255.255.0 (or /24)
The external interface uses a special configuration without an IP address assigned to it. Configure the third interface as the external interface:
Replace INTERFACE_NAME with the actual interface name. For example, eth2 or ens256.
1. Edit the /etc/sysconfig/network-scripts/ifcfg-INTERFACE_NAME file to contain the following:
  Do not change the HWADDR and UUID keys.
```
DEVICE=INTERFACE_NAME
TYPE=Ethernet
ONBOOT="yes"
BOOTPROTO="none"
```
Restart networking:
```
# service network restart
```

To configure name resolution:

Edit the /etc/hosts file to contain the following:

# network
10.0.0.21       network

# controller
10.0.0.11       controller

# compute1
10.0.0.31       compute1