What configuration option enables an OpenLDAP server to act as a syncrepl provider?

To enable an OpenLDAP server to act as a syncrepl provider, the correct configuration option is to use the overlay syncprov. The syncrepl mechanism in OpenLDAP is designed to support replication of entries between LDAP databases, particularly to facilitate the synchronization of data with other LDAP servers.

The overlay syncprov is specifically designed for this purpose. When configured, it allows the OpenLDAP server to provide synchronization to consumers, making it possible for other servers to stay updated with changes that occur on the provider server.

Setting this overlay typically involves adding the syncprov statement to the slapd configuration file, which then enables the OpenLDAP server to share information effectively and manage replica synchronization. This feature is crucial for environments that require high availability through data replication.

Choosing the overlay syncprov option reflects an understanding of how OpenLDAP handles synchronization in a replication setup, thus enabling efficient data management in distributed environments.