Installation guide

which link to the real servers (eth1) will be on the 10.11.12/24 network.

So on the active or primary LVS router node, the public interface's network script,

/etc/sysconfig/network-scripts/ifcfg-eth0, could look something like this:

DEVICE=eth0

BOOTPROTO=static

ONBOOT=yes

IPADDR=192.168.26.9

NETMASK=255.255.255.0

GATEWAY=192.168.26.254

The /etc/sysconfig/network-scripts/ifcfg-eth1 for the private NAT interface on the LVS

router could look something like this:

DEVICE=eth1

BOOTPROTO=static

ONBOOT=yes

IPADDR=10.11.12.9

NETMASK=255.255.255.0

In this example, the VIP for the LVS router's public interface will be 192.168.26.10 and the VIP

for the NAT or private interface will be 10.11.12.10. So, it is essential that the real servers route

requests back to the VIP for the NAT interface.

Important

The sample Ethernet interface configuration settings in this section are for the

real IP addresses of an LVS router and not the floating IP addresses. To

configure the public and private floating IP addresses the administrator should

use the Piranha Configuration Tool, as shown in Section 4, “GLOBAL

SETTINGS” and Section 6.1, “The VIRTUAL SERVER Subsection”.

After configuring the primary LVS router node's network interfaces, configure the backup LVS

router's real network interfaces — taking care that none of the IP address conflict with any other

IP addresses on the network.

Important

Be sure each interface on the backup node services the same network as the

interface on primary node. For instance, if eth0 connects to the public network on

the primary node, it must also connect to the public network on the backup node

as well.

Chapter 3. Setting Up LVS