Storing Configuration Information in LDAP

In addition to keeping NIS+/LDAP configuration information in the configuration files and on the command line, configuration attributes can also be stored in LDAP. This is useful if the configuration information is shared by many NIS+ servers, and is expected to change on a regular basis.

To enable storing of configuration attributes in LDAP, consult your LDAP server documentation and create the following new attributes and object class. The configuration information is expected to reside at the location specified by the nisplusLDAPconfigDN value (from the rpc.nisd command line, or from /lib/svc/method/nisplus), with a cn equal to the nisplusLDAPbaseDomain value (as it is known to the rpc.nisd daemon before reading any configuration information from LDAP).

LDIF data is suitable for ldapadd(1) (attribute and object class OIDs are examples only).

The defaultSearchBase, preferredServerList, and authenticationMethod attributes derive from a draft “DUA config” schema, which is intended to become an IETF standard. In any case, the following definitions are sufficient for the purposes of NIS+LDAPmapping(4).

dn: cn=schema
changetype: modify
add: attributetypes
attributetypes:    ( 1.3.6.1.4.1.11.1.3.1.1.1 NAME 'defaultSearchBase' \
          DESC 'Default LDAP base DN used by a DUA' \
          EQUALITY distinguishedNameMatch \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.11.1.3.1.1.2 NAME 'preferredServerList' \
          DESC 'Preferred LDAP server host addresses to be used by a DUA' \
          EQUALITY caseIgnoreMatch \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.11.1.3.1.1.6 NAME 'authenticationMethod' \
          DESC 'Identifies the authentication method used to connect to the DSA'\
          EQUALITY caseIgnoreMatch \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE )

NIS+/LDAP configuration attributes are as follows.

dn: cn=schema
changetype: modify
add: attributetypes
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.0 \
          NAME 'nisplusLDAPTLS' \
          DESC 'Transport Layer Security' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.1 \
          NAME 'nisplusLDAPTLSCertificateDBPath' \
          DESC 'Certificate file' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.2 \
          NAME 'nisplusLDAPproxyUser' \
          DESC 'Proxy user for data store/retrieval' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.3 \
          NAME 'nisplusLDAPproxyPassword' \
          DESC 'Password/key/shared secret for proxy user' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.4 \
          NAME 'nisplusLDAPinitialUpdateAction' \
          DESC 'Type of initial update' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.5 \
          NAME 'nisplusLDAPinitialUpdateOnly' \
          DESC 'Exit after update ?' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.6 \
          NAME 'nisplusLDAPretrieveErrorAction' \
          DESC 'Action following an LDAP search error' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.7 \
          NAME 'nisplusLDAPretrieveErrorAttempts' \
          DESC 'Number of times to retry an LDAP search' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.8 \
          NAME 'nisplusLDAPretrieveErrorTimeout' \
          DESC 'Timeout between each search attempt' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.9 \
          NAME 'nisplusLDAPstoreErrorAction' \
          DESC 'Action following an LDAP store error' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.10 \
          NAME 'nisplusLDAPstoreErrorAttempts' \
          DESC 'Number of times to retry an LDAP store' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.11 \
          NAME 'nisplusLDAPstoreErrorTimeout' \
          DESC 'Timeout between each store attempt' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.12 \
          NAME 'nisplusLDAPrefreshErrorAction' \
          DESC 'Action when refresh of NIS+ data from LDAP fails' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.13 \
          NAME 'nisplusLDAPrefreshErrorAttempts' \
          DESC 'Number of times to retry an LDAP refresh' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.14 \
          NAME 'nisplusLDAPrefreshErrorTimeout' \
          DESC 'Timeout between each refresh attempt' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.15 \
          NAME 'nisplusNumberOfServiceThreads' \
          DESC 'Max number of RPC service threads' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.16 \
          NAME 'nisplusThreadCreationErrorAction' \
          DESC 'Action when a non-RPC-service thread creation fails' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.17 \
          NAME 'nisplusThreadCreationErrorAttempts' \
          DESC 'Number of times to retry thread creation' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.18 \
          NAME 'nisplusThreadCreationErrorTimeout' \
          DESC 'Timeout between each thread creation attempt' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.19 \
          NAME 'nisplusDumpErrorAction' \
          DESC 'Action when an NIS+ dump fails' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.20 \
          NAME 'nisplusDumpErrorAttempts' \
          DESC 'Number of times to retry a failed dump' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.21 \
          NAME 'nisplusDumpErrorTimeout' \
          DESC 'Timeout between each dump attempt' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.22 \
          NAME 'nisplusResyncService' \
          DESC 'Service provided during a resync' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.23 \
          NAME 'nisplusUpdateBatching' \
          DESC 'Method for batching updates on master' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.24 \
          NAME 'nisplusUpdateBatchingTimeout' \
          DESC 'Minimum time to wait before pinging replicas' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.25 \
          NAME 'nisplusLDAPmatchFetchAction' \
          DESC 'Should pre-fetch be done ?' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.26 \
          NAME 'nisplusLDAPbaseDomain' \
          DESC 'Default domain name used in NIS+/LDAP mapping' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 SINGLE-VALUE )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.27 \
          NAME 'nisplusLDAPdatabaseIdMapping' \
          DESC 'Defines a database id for an NIS+ object' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.28 \
          NAME 'nisplusLDAPentryTtl' \
          DESC 'TTL for cached objects derived from LDAP' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.29 \
          NAME 'nisplusLDAPobjectDN' \
          DESC 'Location in LDAP tree where NIS+ data is stored' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.30 \
          NAME 'nisplusLDAPcolumnFromAttribute' \
          DESC 'Rules for mapping LDAP attributes to NIS+ columns' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )
attributetypes:    ( 1.3.6.1.4.1.42.2.27.5.42.42.18.31 \
          NAME 'nisplusLDAPattributeFromColumn' \
          DESC 'Rules for mapping NIS+ columns to LDAP attributes' \
          SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )

dn: cn=schema
changetype: modify
add: objectclasses
objectclasses:    ( 1.3.6.1.4.1.42.2.27.5.42.42.19.0 NAME 'nisplusLDAPconfig' \
          DESC 'NIS+/LDAP mapping configuration' \
          SUP top STRUCTURAL MUST ( cn ) \
          MAY ( preferredServerList $ defaultSearchBase $
authenticationMethod $ nisplusLDAPTLS $ nisplusLDAPTLSCertificateDBPate
$ nisplusLDAPproxyUser $ nisplusLDAPproxyPassword $ nisplusLDAPinitialUpdateAction
$ nisplusLDAPinitialUpdateOnly $ nisplusLDAPretrieveErrorAction
$ nisplusLDAPretrieveErrorAttempts $ nisplusLDAPretrieveErrorTimeout
$ nisplusLDAPstoreErrorAction $ nisplusLDAPstoreErrorAttempts
$ nisplusLDAPstoreErrorTimeout $ nisplusLDAPrefreshErrorAction
$ nisplusLDAPrefreshErrorAttempts $ nisplusLDAPrefreshErrorTimeout
$ nisplusNumberOfServiceThreads $nisplusThreadCreationErrorAction
$ nisplusThreadCreationErrorAttempts $ nisplusThreadCreationErrorTimeout
$ nisplusDumpErrorAction $ nisplusDumpErrorAttempts
$ nisplusDumpErrorTimeout $ nisplusResyncService $ nisplusUpdateBatching
$ nisplusUpdateBatchingTimeout $ nisplusLDAPmatchFetchAction
$ nisplusLDAPbaseDomain $ nisplusLDAPdatabaseIdMapping $ nisplusLDAPentryTtl 
$ nisplusLDAPobjectDN $ nisplusLDAPcolumnFromAttribute !
$ nisplusLDAPattributeFromColumn ) )

Create a file containing the following LDIF data (substitute your actual search base for searchBase, and the fully qualified domain name for domain.)

dn: cn=domain,searchBase

cn: domain

objectClass: top objectClass: nisplusLDAPconfig

Use the above file as input to ldapadd(1) to create the NIS+/LDAP configuration entry. Initially, the entry is empty. Use ldapmodify(1) to add configuration attributes. For example, to set the nisplusNumberOfServiceThreads attribute to “32”, create the following file (for input to ldapmodify(1)).

dn: cn=domain, searchBase nisplusNumberOfServiceThreads: 32