LDAP server groups are sets of servers where one is a primary server, and the rest are backup servers.

Queries go to the primary server if available, otherwise to the backup server(s). For multiple server groups, the RA balances queries across groups.

You specify all LDAP server groups in a single string, white-space separated; and each server name may optionally contain a port number to use instead of the default LDAP port (389). For example:

Server group configuration What it specifies

1 group of 1 server


2 groups, each with 1 server

server1 server2,server3

2 groups, 1 with a backup server (server2)

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