nsdb-remove-nci man page

nsdb-remove-nci — remove NSDB container information from an LDAP server

Synopsis

nsdb-remove-nci [-?d] [-D binddn] [-e nce] [-l nsdbname] [-r nsdbport]

Introduction

RFC 5716 introduces the Federated File System (FedFS, for short). FedFS is an extensible standardized mechanism by which system administrators construct a coherent namespace across multiple file servers using file system referrals. For further details, see fedfs(7).

The bulk of FedFS junction information in a FedFS domain is stored on one or more LDAP servers. These servers are known as namespace databases, or NSDBs, for short.

FedFS-enabled file servers and clients access the information stored on NSDBs via standard LDAP queries. FedFS-enabled file servers use these queries to resolve FedFS junctions. FedFS administrators use them to manage information about file sets contained in a FedFS domain name space.

Description

The nsdb-remove-nci(8) command is part of a collection of low-level single-use programs that are intended for testing the NSDB protocol or for use in scripts. This command is a convenient way to remove NSDB features from an LDAP server by removing NSDB container information from the server's Directory Information Tree (or DIT, for short).

The top of the DIT on an LDAP server has one or more naming contexts. Some LDAP server implementations call these contexts root suffixes. All LDAP entries on that server are contained under naming contexts.

The LDAP object under which FedFS-related entries reside is known as the NSDB Container Entry (or NCE). The NCE can be a naming context object, or it can be located somewhere below the naming context. Both the naming context and the NCE must be world-readable for FedFS-enabled clients and servers to access the NSDB.

The nsdb-remove-nci(8) command demotes an NCE to an unremarkable LDAP entry so that NSDB clients cannot discover it. It performs the opposite action from nsdb-update-nci(8). The target NCE object must exist before this operation can complete successfully.

Options

-d, --debug
Specifies that debugging messages be produced during operation.
-?, --help
Prints an nsdb-remove-nci(8) version and usage message on stderr, then exits.
-D, --binddn=bind-distinguished-name
Specifies a distinguished name of an entity used to bind to the LDAP server where the NSDB resides. If the --binddn option is not specified, the value of the FEDFS_NSDB_ADMIN environment variable is consulted. If this variable is not set, the NSDB connection parameter database is searched for this DN. If none of these is specified, or if this entity does not have permission to modify this area of the server's DIT, the nsdb-remove-nci(8) command fails.
-e, --nce=NSDB-container-entry-distinguished-name
Specifies the distinguished name of the doomed NSDB Container Entry. If the --nce option is not specified, the value of the FEDFS_NSDB_NCE environment variable is consulted. If this variable is not set, then the NSDB connection parameter database is searched for this DN. If none of these is specified, the nsdb-remove-nci(8) command fails.
-l, --nsdbname=NSDB-hostname
Specifies the hostname of the NSDB where the NSDB Container Entry resides. If the --nsdbname option is not specified, the value of the FEDFS_NSDB_HOST environment variable is consulted. If the variable is not set and the --nsdbname option is not specified, the nsdb-remove-nci(8) command fails.
-r, --nsdbport=NSDB-port
Specifies the IP port of the NSDB where the NSDB Container Entry resides. If the --nsdbport option is not specified, the value of the FEDFS_NSDB_PORT environment variable is consulted. The default value if the variable is not set is 389.

Exit Codes

The NSDB returns a value that reflects the success of the requested operation.

FEDFS_OK
The LDAP modify request succeeded.
FEDFS_ERR_ACCESS
The bound entity does not have permission to perform the requested operation.
FEDFS_ERR_INVAL
One of the arguments was not valid.
FEDFS_ERR_SVRFAULT
An unanticipated non-protocol error occurred.
FEDFS_ERR_NSDB_ROUTE
The nsdb-remove-nci(8) command was unable to find a route to the specified NSDB.
FEDFS_ERR_NSDB_DOWN
The nsdb-remove-nci(8) command determined that the specified NSDB was down.
FEDFS_ERR_NSDB_CONN
The nsdb-remove-nci(8) command was unable to establish a connection with the specified NSDB.
FEDFS_ERR_NSDB_AUTH
The nsdb-remove-nci(8) command was unable to authenticate and establish a secure connection with the specified NSDB.
FEDFS_ERR_NSDB_LDAP
A non-specific LDAP error occurred on the connection between the nsdb-remove-nci(8) command and specified NSDB.
FEDFS_ERR_NSDB_LDAP_VAL
An LDAP error occurred on the connection between the nsdb-remove-nci(8) command and specified NSDB. The specific error may be displayed on the command line.
FEDFS_ERR_NSDB_RESPONSE
The nsdb-remove-nci(8) command received a malformed response from the specified NSDB.
FEDFS_ERR_NSDB_FAULT
An unanticipated error related to the specified NSDB occurred.
FEDFS_ERR_NSDB_PARAMS
The local NSDB connection parameter database does not have any connection parameters on record for the specified NSDB.
FEDFS_ERR_NSDB_LDAP_REFERRAL
The nsdb-remove-nci(8) command received an LDAP referral that it was unable to follow.
FEDFS_ERR_NSDB_LDAP_REFERRAL_VAL
The nsdb-remove-nci(8) command received an LDAP referral that it was unable to follow. A specific error may be displayed on the command line.
FEDFS_ERR_NSDB_LDAP_REFERRAL_NOTFOLLOWED
The nsdb-remove-nci(8) command received an LDAP referral that it chose not to follow, either because the local implementation does not support following LDAP referrals or LDAP referral following is disabled.
FEDFS_ERR_NSDB_PARAMS_LDAP_REFERRAL
The nsdb-remove-nci(8) command received an LDAP referral that it chose not to follow because the local NSDB connection parameter database had no connection parameters for the NSDB targeted by the LDAP referral.

Examples

Suppose you are the FedFS administrator of the example.net FedFS domain and that you want to disable the NCE o=fedfs on the NSDB nsdb.example.net.

$ nsdb-remove-nci -l nsdb.example.net -D cn=Manager -e o=fedfs
Enter NSDB password:
Successfully removed NCI

This action does not remove any FedFS records. It simply removes the pointer to the records.

Security

An entity with appropriate authority, such as an administrator entity, must be used to modify LDAP entries. The nsdb-remove-nci(8) command must bind as such an entity to perform this operation. The nsdb-remove-nci(8) command asks for a password on stdin. Standard password blanking techniques are used to obscure the password on the user's terminal.

The target LDAP server must be registered in the local NSDB connection parameter database. The connection security mode listed in the NSDB connection parameter database for the target LDAP server is used during this operation. See nsdbparams(8) for details on how to register an NSDB in the local NSDB connection parameter database.

See Also

fedfs(7), nsdb-nces(8), nsdb-update-nci(8), nsdbparams(8)

RFC 5716 for FedFS requirements and overview

RFC 4510 for an introduction to LDAP

Colophon

This page is part of the fedfs-utils package. A description of the project and information about reporting bugs can be found at http://wiki.linux-nfs.org/wiki/index.ph….

Author

Chuck Lever <chuck.lever@oracle.com>

Referenced By

fedfs(7), nsdb-delete-nsdb(8).

3 February 2014