Redundancy - Red Hat ENTERPRISE LINUX 4 - VIRTUAL SERVER ADMINISTRATION Manual

Note
The private IP address is not needed for Direct Routing configurations, as all real
servers as well as the LVS directors share the same virtual IP addresses and should
have the same IP route configuration.
Note
The primary LVS router's private IP can be configured on any interface that accepts
TCP/IP, whether it be an Ethernet adapter or a serial port.
Use network type
Click the NAT button to select NAT routing.
Click the Direct Routing button to select direct routing.
The next three fields deal specifically with the NAT router's virtual network interface connecting the
private network with the real servers. These fields do not apply to the direct routing network type.
NAT Router IP
Enter the private floating IP in this text field. This floating IP should be used as the gateway for the
real servers.
NAT Router netmask
If the NAT router's floating IP needs a particular netmask, select it from drop-down list.
NAT Router device
Use this text field to define the device name of the network interface for the floating IP address,
such as eth1:1.
Note
You should alias the NAT floating IP address to the Ethernet interface connected to
the private network. In this example, the private network is on the eth1 interface, so
eth1:1 is the floating IP address.
Warning
After completing this page, click the ACCEPT button to make sure you do not lose any
changes when selecting a new panel.

4.5. REDUNDANCY

The REDUNDANCY panel allows you to configure of the backup LVS router node and set various
heartbeat monitoring options.
REDUNDANCY
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