Red Hat ENTERPRISE LINUX AS 2.1 Installation Manual page 142

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Name
Enter a descriptive name to identify the virtual server. This name is not the hostname for the
machine, so make it descriptive and easily identifiable. You can even reference the protocol
used by the virtual server, such as HTTP.
Application port
Enter the port number through which the service application will listen. Since this example is
for HTTP services, port 80 is used.
Protocol
Choose between UDP and TCP in the drop-down menu. Web servers typically communicate
via the TCP protocol, so this is selected in the example above.
Virtual IP Address
Enter the virtual server's floating IP address in this text field.
Virtual IP Network Mask
Set the netmask for this virtual server with the drop-down menu.
Firewall Mark
Do not enter a firewall mark integer value in this field unless you are bundling multi-port pro-
tocols or creating a multi-port virtual server for separate, but related protocols. In this example,
the above virtual server has a
on port 80 and to HTTPS on port 443 using the firewall mark value of 80. When combined with
persistence, this technique will ensure users accessing both insecure and secure webpages are
routed to the same real server, preserving state.
Device
Chapter 9:Configuring the LVS Routers with Piranha Configuration Tool
Firewall Mark
Entering a firewall mark in this field allows IPVS to recognize that
packets bearing this firewall mark are treated the same, but you
must perform further configuration outside of the Piranha Con-
figuration Tool to actually assign the firewall marks. See Section
8.3, Multi-port Services and LVS Clustering for instructions on cre-
ating multi-port services and Section 8.4, FTP In an LVS Cluster
for creating a highly available FTP virtual server.
of 80 because we are bundling connections to HTTP
WARNING