Red Hat LINUX VIRTUAL SERVER - FOR ENTERPRISE LINUX 5.2 REV 05-2008 Manual page 58

Chapter 4. Configuring the LVS Routers with Piranha Configuration Tool
Load monitoring tool
The LVS router can monitor the load on the various real servers by using either
. If you select
ruptime
service. If you select
Caution
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 must be Linux
machines.
Scheduling
Select your preferred scheduling algorithm from the drop-down menu. The default is
Weighted least-connection
Section 3.1, "Scheduling
Persistence
If an administrator needs persistent connections to the virtual server during client
transactions, enter the number of seconds of inactivity allowed to lapse before a connection
times out in this text field.
Important
If you entered a value in the Firewall Mark field above, you should enter a value
for persistence as well. Also, be sure that if you use firewall marks and
persistence together, that the amount of persistence is the same for each virtual
server with the firewall mark. For more on persistence and firewall marks, refer to
Section 5, "Persistence and Firewall
Persistence Network Mask
To limit persistence to particular subnet, select the appropriate network mask from the
drop-down menu.
Note
Before the advent of firewall marks, persistence limited by subnet was a crude
way of bundling connections. Now, it is best to use persistence in relation to
firewall marks to achieve the same result.
48
from the drop-down menu, each real server must run the
rup
, each real server must run the
ruptime
. For more information on scheduling algorithms, see
Algorithms".
service.
rwhod
Marks".
or
rup
rstatd