Fedora Directory Server

This page provides configuration notes for Fedora Directory Server (Fedora DS). This page is related to Configuring an LDAP Directory Connector.

Crowd supports read-only connections to Fedora DS using the Posix/NIS schema RFC 2307.

Crowd's Fedora DS support is read-only

You cannot add or update user details or group details in a Crowd-connected Fedora Directory server. Users will not be able to change their passwords from Crowd or from Crowd-connected applications.

Screenshot: Connector — Fedora DS

Attribute	Description
Connector	The directory connector to use when communicating with the directory server.
URL	The connection URL to use when connecting to the directory server, e.g.: `ldap://localhost:389`, or port `639` for SSL.
Secure SSL	Specifies whether the connection to the directory server is an SSL connection.
Use Node Referrals	Specifies whether to use the JNDI lookup `java.naming.referral` option.
Use the User Membership Attribute	Put a tick in the checkbox if your directory supports the group membership attribute on the user. (By default, this is the 'memberOf' attribute.) For instructions on enabling this feature in your directory, please refer to the OpenLDAP documentation. If this checkbox is ticked, Crowd will use the group membership attribute on the user when retrieving the members of a given group. This will result in a more efficient retrieval. If this checkbox is not ticked, Crowd will use the members attribute on the group ('member' by default) for the search.
Use Paged Results	Specifies whether to use the LDAP control extension for simple paged results option. Retrieves chunks of data rather than all of the results at once.
Use Naive DN Matching	This setting determines how Crowd will compare DNs to determine if they are equal. See Using Naive DN Matching. If this checkbox is ticked, Crowd will do a direct, case-insensitive, string comparison. This is the default and recommended setting for Fedora DS. Using relaxed DN standardisation will result in a significant performance improvement. If this checkbox is not ticked, Crowd will parse the DN and then check the parsed version.
Polling Interval	Crowd will send a request to LDAP every x minutes, where 'x' is the number specified here. Please read the full instructions: Configuring Caching for an LDAP Directory.
Read Timeout	Time in seconds to wait for a response to be received. If there is no response within the specified time period, the read attempt will be aborted. A value of 0 (zero) means there is no limit.
Search Timeout	Time in seconds to wait for a response from a search operation. A value of 0 (zero) means there is no limit.
Connection Timeout	Timeout in seconds when opening new server connections. If not specified, the TCP network timeout will be used, which may be several minutes.
Base DN	The root distinguished name to use when running queries against the directory server, e.g.: `o=acmecorp,c=com`.
User DN	The distinguished name of the user that Crowd will use when connecting to the directory server.
Password	The password of the user specified above.

Note: You can also configure site-wide LDAP connection pool settings. See Configuring the LDAP Connection Pool.

Group Relationships

Crowd will check both the gidNumber and the memberUid attributes to determine if a user is a member of a group. The name of the gidNumber attribute is not configurable — Crowd will always use this attribute to determine membership.

The RFC 2307 schema does not support nesting of groups, so Crowd does not support nested groups in Fedora DS.

Next Step

Go back to Configuring an LDAP Directory Connector.

Child pages

Group Relationships

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