Directory Server, Version 6.1

 

Configuration only mode

The IBM® Tivoli® Directory Server supports LDAP access to the server's configuration settings. An administrator can use LDAP protocol to query and update the configuration for the server. This feature enables remote administration. In order for this access to be more robust and reliable, the server does not depend on successful initialization of the database back ends. It is possible to start the server in configuration only mode with only the cn=configuration suffix active. In other words, as long as the configuration backend is available, the server starts and accepts LDAP requests. Configuration only mode gives an administrator remote access to the server even when errors are encountered during startup.

The following features are supported in configuration only mode:

  • Access to the configuration file and log files.

  • Auditing

  • Event notification

  • Kerberos

  • SASL

  • SSL

The following features are not supported in configuration only mode:

  • Access to the database

  • Changelog

  • Password policy

  • Replication

  • Schema changes

  • Transactions

 

Minimum requirements for configuration only mode

  • The configuration file must be in the correct LDIF format and the server must be able to locate and read the file.

  • The server must be able to read and load the schema according to the configuration file.

  • The server must be able to load the configuration plug-in.

 

How to start in configuration only mode

Any failure during server startup causes the server to start in configuration only mode.

 

Using Web Administration:

If you have not done so already, click Server administration in the Web Administration navigation area and then click Start/Stop/Restart Server in the expanded list. To start the server in configuration only mode, select the Start/Restart in configuration only mode check box.

 

Using the command line:

Specify -a or -A on server startup. 

idsslapd -a -I <instancename>

or 

ibmdirctl -h <hostname> -D <adminDN> -w <adminpw>-p <portnumber> 
  start -- -a

The -n and -N options prevent the server from starting if the server is unable to start with the database backends (not in configuration only mode). See the ibmdirctl command information in the IBM Tivoli Directory Server version 6.1 Command Reference for more information.

 

How to verify that the server is running in configuration only mode

To determine if the server is running in configuration only mode, use one of the following methods.

 

Using Web Administration:

If the server has started in configuration only mode the Configuration only mode icon icon, located between the stop and start icons, is highlighted.

 

Using the command line:

Issue a search of the root DSE for the attribute ibm-slapdisconfigurationmode. If set to true, the server is running in configuration only mode. 

idsldapsearch -s base -b " " objectclass=* ibm-slapdisconfigurationmode




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