Installation guide

Figure 4 .3. T he GLOBAL SETT INGS Panel
The top half of this panel sets up the primary LVS router's public and private network interfaces. These
are the interfaces already configured in Section 3.1.1,Configuring Network Interfaces for LVS with NAT.
Prim ary server public IP
In this field, enter the publicly routable real IP address for the primary LVS node.
Prim ary server private IP
Enter the real IP address for an alternative network interface on the primary LVS node. T his
address is used solely as an alternative heartbeat channel for the backup router and does not
have to correlate to the real private IP address assigned in Section 3.1.1, Configuring Network
Interfaces for LVS with NAT. You may leave this field blank, but doing so will mean there is no
alternate heartbeat channel for the backup LVS router to use and therefore will create a single
point of failure.
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.
Red Hat Enterprise Linux 4 Virtual Server Administration
38