Manual:$wgLBFactoryConf

LoadBalancer settings: $wgLBFactoryConf
Load balancer factory configuration.
Introduced in version:	1.13.0 (r32578)
Removed in version:	still in use
Allowed values:	(array)
Default value:	array( 'class' => 'LBFactory_Simple' )

Other settings: Alphabetical | By Function

Details

To set up a multi-master wiki farm, set the class here to something that can return a LoadBalancer with an appropriate master on a call to getMainLB(). The class identified here is responsible for reading $wgDBservers, $wgDBserver, etc., so overriding it may cause those globals to be ignored.

The LBFactory_Multi class is provided for this purpose, the configuration for this class is provided below:

Warning: If you use this class, all previous settings like $wgDBservers, $wgExternalServers, ... will be ignored.

sectionsByDB

A map of database names to section names

sectionLoads

A 2-d map. For each section, gives a map of server names to load ratios. For example: array( 'section1' => array( 'db1' => 100, 'db2' => 100 ) )

serverTemplate

A server info associative array as documented for $wgDBservers. The host, hostName and load entries will be overridden.

groupLoadsBySection

A 3-d map giving server load ratios for each section and group. For example: array( 'section1' => array( 'group1' => array( 'db1' => 100, 'db2' => 100 ) ) )

groupLoadsByDB

A 3-d map giving server load ratios by DB name.

hostsByName

A map of hostname to IP address.

externalLoads

A map of external storage cluster name to server load map

externalTemplate

A server info structure used for external storage servers

templateOverridesByServer

A 2-d map overriding mainTemplate or externalTemplate on a server-by-server basis.

templateOverridesByCluster

A 2-d map overriding externalTemplate by cluster

masterTemplateOverrides

An override array for mainTemplate and externalTemplate for all master servers.

Wikimedia configuration

To see how Wikimedia uses $wgLBFactoryConf to configure its wikis see:

• db.php