Red Hat LINUX VIRTUAL SERVER 4.7 - ADMINISTRATION Guia de Instalação descarregar pdf (Página 47)

Warning

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. T he default is Weighted

least-connection. For more information on scheduling algorithms, see Section 1.3.1,

“Scheduling Algorithms”.

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 1.5,

“Persistence and Firewall Marks”.

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.

Warning

Remember to click the ACCEPT button after making any changes in this panel. T o make sure you

do not lose changes when selecting a new panel.

4.6.2. REAL SERVER Subsection

Clicking on the REAL SERVER subsection link at the top of the panel displays the EDIT REAL SERVER

Red Hat Enterprise Linux 4 Virtual Server Administration

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Red Hat LINUX VIRTUAL SERVER 4.7 - ADMINISTRATION Guia de Instalação Página 47