Red Hat ENTERPRISE LINUX AS 2.1 Installation Manual page 143

Section 9.6:
VIRTUAL SERVERS
Enter the name of the network device to which you want the floating IP address defined the
Virtual IP Address
You should alias the public floating IP address to the Ethernet interface connected to the public
network. In this example, the public network is on the eth0 interface, so eth0:1 should be
entered as the device name.
Re-entry Time
Enter an integer value which defines the length of time, in seconds, before the active LVS router
attempts to bring a real server back into the cluster after a failure.
Service Timeout
Enter an integer value which defines the length of time, in seconds, before a real server is con-
sidered dead and removed from the cluster.
Quiesce server
When the
Quiesce server
the least-connections table is reset to zero so the active LVS router routes requests as if all the real
servers were freshly added to the cluster. This option prevents the a new server from becoming
bogged down with a high number of connections upon entering the cluster.
Load monitoring tool
The LVS router can monitor the load on the various real servers by using either rup or rup-
time. If you select rup from the drop-down menu, each real server must run the rstatd
service. If you select ruptime, each real server must run the rwhod service.
Load monitoring is not the same as load balancing and can result in
hard to predict scheduling behavior when combined with weighted
scheduling algorithms. Also, if you use load monitoring, the real
servers in the cluster must be Linux machines.
Scheduling
Select your preferred scheduling algorithm from the drop-down menu.
Weighted least-connection. For more information on scheduling algorithms, see
Section 6.3.1, Scheduling Algorithms.
Persistence
field to bind.
radio button is selected, anytime a new real server node comes online,
CAUTION
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The default is