# $OpenLDAP$
-# Copyright 1999-2003, The OpenLDAP Foundation, All Rights Reserved.
+# Copyright 1999-2005, The OpenLDAP Foundation, All Rights Reserved.
# COPYING RESTRICTIONS APPLY, see COPYRIGHT.
H1: The slapd Configuration File
Types Description
bdb Berkeley DB transactional backend
dnssrv DNS SRV backend
+hdb Hierarchical variant of bdb backend
ldap Lightweight Directory Access Protocol (Proxy) backend
ldbm Lightweight DBM backend
meta Meta Directory backend
H4: replica
> replica uri=ldap[s]://<hostname>[:<port>] | host=<hostname>[:<port>]
-> [bindmethod={simple|kerberos|sasl}]
+> [bindmethod={simple|sasl}]
> ["binddn=<DN>"]
> [saslmech=<mech>]
> [authcid=<identity>]
> [authzid=<identity>]
> [credentials=<password>]
-> [srvtab=<filename>]
This directive specifies a replication site for this database. The
{{EX:uri=}} parameter specifies a scheme, a host and optionally a port where
URI such as {{EX:ldap://slave.example.com:389}} or
{{EX:ldaps://slave.example.com:636}}.
-The {{EX:binddn=}} parameter gives the DN to bind as for updates to
-the slave slapd. It should be a DN which has read/write
-access to the slave slapd's database, typically given as a
-{{EX:rootdn}} in the slave's config file. It must also match the
-{{EX:updatedn}} directive in the slave slapd's config file. Since DNs are
-likely to contain embedded spaces, the entire {{EX:"binddn=<DN>"}}
-string should be enclosed in double quotes.
-
-The {{EX:bindmethod}} is {{EX:simple}} or {{EX:kerberos}} or {{EX:sasl}},
-depending on whether simple password-based authentication or Kerberos
-authentication or {{TERM:SASL}} authentication is to be used when connecting
-to the slave slapd.
-
-Simple authentication should not be used unless adequate integrity
-and privacy protections are in place (e.g. TLS or IPSEC). Simple
-authentication requires specification of {{EX:binddn}} and
-{{EX:credentials}} parameters.
-
-Kerberos authentication is deprecated in favor of SASL authentication
-mechanisms, in particular the {{EX:KERBEROS_V4}} and {{EX:GSSAPI}}
-mechanisms. Kerberos authentication requires {{EX:binddn}} and
-{{EX:srvtab}} parameters.
+The {{EX:binddn=}} parameter gives the DN to bind as for updates
+to the slave slapd. It should be a DN which has read/write access
+to the slave slapd's database. It must also match the {{EX:updatedn}}
+directive in the slave slapd's config file. Generally, this DN
+{{should not}} be the same as the {{EX:rootdn}} of the master
+database. Since DNs are likely to contain embedded spaces, the
+entire {{EX:"binddn=<DN>"}} string should be enclosed in double
+quotes.
+
+The {{EX:bindmethod}} is {{EX:simple}} or {{EX:sasl}}, depending
+on whether simple password-based authentication or {{TERM:SASL}}
+authentication is to be used when connecting to the slave slapd.
+
+Simple authentication should not be used unless adequate data
+integrity and confidentiality protections are in place (e.g. TLS
+or IPSEC). Simple authentication requires specification of
+{{EX:binddn}} and {{EX:credentials}} parameters.
SASL authentication is generally recommended. SASL authentication
requires specification of a mechanism using the {{EX:saslmech}} parameter.
information on how to use this directive.
-H4: rootdn <dn>
+H4: rootdn <DN>
This directive specifies the DN that is not subject to
access control or administrative limit restrictions for
prefix of another, it must appear after it in the config file.
-H4: updatedn <dn>
-
-This directive is only applicable in a slave slapd. It specifies
-the DN allowed to make changes to the replica. This may be the DN
-{{slurpd}}(8) binds as when making changes to the replica or the DN
-associated with a SASL identity.
-
-Entry-based Example:
-
-> updatedn "cn=Update Daemon,dc=example,dc=com"
-
-SASL-based Example:
-
-> updatedn "uid=slurpd,cn=example.com,cn=digest-md5,cn=auth"
-
-See the {{SECT:Replication with slurpd}} chapter for more information
-on how to use this directive.
-
-H4: updateref <URL>
-
-This directive is only applicable in a slave slapd. It
-specifies the URL to return to clients which submit update
-requests upon the replica.
-If specified multiple times, each {{TERM:URL}} is provided.
-
-\Example:
-
-> updateref ldap://master.example.net
-
-
H4: syncrepl
-> syncrepl id=<replica ID>
+> syncrepl rid=<replica ID>
> provider=ldap[s]://<hostname>[:port]
> [type=refreshOnly|refreshAndPersist]
> [interval=dd:hh:mm:ss]
+> [retry=[<retry interval> <# of retries>]+]
> [searchbase=<base DN>]
> [filter=<filter str>]
> [scope=sub|one|base]
> [sizelimit=<limit>]
> [timelimit=<limit>]
> [schemachecking=on|off]
-> [updatedn=<dn>]
> [bindmethod=simple|sasl]
-> [binddn=<dn>]
+> [binddn=<DN>]
> [saslmech=<mech>]
> [authcid=<identity>]
> [authzid=<identity>]
> [realm=<realm>]
> [secprops=<properties>]
-This directive specifies the current database as a replica of the
-master database at the provider site. The replica database at the
-replication consumer site is kept up-to-date with the master database
-using the LDAP Content Synchronization protocol. See
-{{EX:draft-zeilenga-ldup-sync-xx.txt}} ({{a work in progress}}) for
-more information on the protocol.
-The {{EX:id}} parameter is used for identification of the current
-syncrepl directive in the database, where the three-digit integer
-{{EX:<replica ID>}} uniquely identifies the syncrepl specification
-described by the current syncrepl directive.
+This directive specifies the current database as a replica of the
+master content by establishing the current {{slapd}}(8) as a
+replication consumer site running a syncrepl replication engine.
+The master database is located at the replication provider site
+specified by the {{EX:provider}} parameter. The replica database is
+kept up-to-date with the master content using the LDAP Content
+Synchronization protocol. See {{EX:draft-zeilenga-ldup-sync-xx.txt}}
+({{a work in progress}}) for more information on the protocol.
+
+The {{EX:rid}} parameter is used for identification of the current
+{{EX:syncrepl}} directive within the replication consumer server,
+where {{EX:<replica ID>}} uniquely identifies the syncrepl specification
+described by the current {{EX:syncrepl}} directive. {{EX:<replica ID>}}
+is non-negative and is no more than three decimal digits in length.
The {{EX:provider}} parameter specifies the replication provider site
-containing the master database as an LDAP URI. The {{EX:provider}}
+containing the master content as an LDAP URI. The {{EX:provider}}
parameter specifies a scheme, a host and optionally a port where the
provider slapd instance can be found. Either a domain name or IP
address may be used for <hostname>. Examples are
{{EX:ldap://provider.example.com:389}} or {{EX:ldaps://192.168.1.1:636}}.
If <port> is not given, the standard LDAP port number (389 or 636) is used.
-Note that syncrepl uses a consumer-initiated protocol, and hence its
+Note that the syncrepl uses a consumer-initiated protocol, and hence its
specification is located at the consumer site, whereas the {{EX:replica}}
specification is located at the provider site. {{EX:syncrepl}} and
-{{EX:replica}} are two independent replication mechanisms and they do
-not represent the replication peers of each other.
+{{EX:replica}} directives define two independent replication
+mechanisms. They do not represent the replication peers of each other.
-The content of the {{EX:syncrepl}} replica is defined using a search
-specification as its result set. The consumer {{slapd}}(8) will
+The content of the syncrepl replica is defined using a search
+specification as its result set. The consumer slapd will
send search requests to the provider slapd according to the search
specification. The search specification includes {{EX:searchbase}},
{{EX:scope}}, {{EX:filter}}, {{EX:attrs}}, {{EX:attrsonly}},
{{EX:sizelimit}}, and {{EX:timelimit}} parameters as in the normal
-search specification. The {{EX:syncrepl}} search specification has
+search specification. The syncrepl search specification has
the same value syntax and the same default values as in the
{{ldapsearch}}(1) client search tool.
The LDAP Content Synchronization protocol has two operation
types: {{EX:refreshOnly}} and {{EX:refreshAndPersist}}.
The operation type is specified by the {{EX:type}} parameter.
-In the {{EX:refreshOnly}} mode, the next synchronization search operation
+In the {{EX:refreshOnly}} operation, the next synchronization search operation
is periodically rescheduled at an interval time after each
synchronization operation finishes. The interval is specified
by the {{EX:interval}} parameter. It is set to one day by default.
-In the {{EX:refreshAndPersist}} mode, a synchronization search
+In the {{EX:refreshAndPersist}} operation, a synchronization search
remains persistent in the provider slapd. Further updates to the
-master replica will generate searchResultEntry to the consumer slapd
+master replica will generate {{EX:searchResultEntry}} to the consumer slapd
as the search responses to the persistent synchronization search.
+If an error occurs during replication, the consumer will attempt to reconnect
+according to the retry parameter which is a list of the <retry interval>
+and <# of retries> pairs. For example, retry="60 10 300 3" lets the consumer
+retry every 60 seconds for the first 10 times and then retry every 300 seconds
+for the next three times before stop retrying. + in <# of retries> means
+indefinite number of retries until success.
+
The schema checking can be enforced at the LDAP Sync consumer site
-by turning on the {{EX:schemachecking}} parameter. The default is off.
-
-The {{EX:updatedn}} paramter specifies the DN in the consumer site
-which is allowed to make changes to the replica. This DN is used
-locally by the syncrepl engine when updating the replica with
-the entries received from the provider site by using the
-internal operation mechanism. The update of the replica content
-is subject to the access control privileges of the DN.
-The DN should have read/write access to the replica database.
-It is typically given as a {{EX:rootdn}} in the consumer site's
-config file.
+by turning on the {{EX:schemachecking}} parameter.
+If it is turned on, every replicated entry will be checked for its
+schema as the entry is stored into the replica content.
+Every entry in the replica should contain those attributes
+required by the schema definition.
+If it is turned off, entries will be stored without checking
+schema conformance. The default is off.
The {{EX:binddn}} parameter gives the DN to bind as for the
syncrepl searches to the provider slapd. It should be a DN
{{TERM:SASL}} authentication is to be used when connecting
to the provider slapd.
-Simple authentication should not be used unless adequate integrity
-and privacy protections are in place (e.g. TLS or IPSEC). Simple
-authentication requires specification of {{EX:binddn}} and
-{{EX:credentials}} parameters.
+Simple authentication should not be used unless adequate data
+integrity and confidentiality protections are in place (e.g. TLS
+or IPSEC). Simple authentication requires specification of {{EX:binddn}}
+and {{EX:credentials}} parameters.
SASL authentication is generally recommended. SASL authentication
requires specification of a mechanism using the {{EX:saslmech}} parameter.
for more information on how to use this directive.
-H3: BDB Database Directives
+H4: updatedn <DN>
+
+This directive is only applicable in a slave slapd. It specifies
+the DN allowed to make changes to the replica. This may be the DN
+{{slurpd}}(8) binds as when making changes to the replica or the DN
+associated with a SASL identity.
+
+Entry-based Example:
+
+> updatedn "cn=Update Daemon,dc=example,dc=com"
+
+SASL-based Example:
+
+> updatedn "uid=slurpd,cn=example.com,cn=digest-md5,cn=auth"
-Directives in this category only apply to a {{TERM:BDB}} database.
-That is, they must follow a "database bdb" line and come before any
+See the {{SECT:Replication with slurpd}} chapter for more information
+on how to use this directive.
+
+H4: updateref <URL>
+
+This directive is only applicable in a slave slapd. It
+specifies the URL to return to clients which submit update
+requests upon the replica.
+If specified multiple times, each {{TERM:URL}} is provided.
+
+\Example:
+
+> updateref ldap://master.example.net
+
+
+H3: BDB and HDB Database Directives
+
+Directives in this category only apply to both the {{TERM:BDB}}
+and the {{TERM:HDB}} database.
+That is, they must follow a "database bdb" or "database hdb" line
+and come before any
subsequent "backend" or "database" line. For a complete reference
-of BDB configuration directives, see {{slapd-bdb}}(5).
+of BDB/HDB configuration directives, see {{slapd-bdb}}(5).
H4: directory <directory>
> directory /usr/local/var/openldap-data
-H4: sessionlog <sid> <limit>
-
-This directive specifies a session log store in the provider site
-which contains the information on the entries which has been
-scoped out of the content of the {{EX:<sid>}} replication session.
-The first syncrepl search request having the same sid value in the
-cookie establishes the session log store in the provider site.
-The number of the entries in the session log store is limited
-by {{EX:<limit>}}. Excessive entries are removed from the store
-in the FIFO order. Both {{EX:<sid>}} and {{EX:<limit>}} are integers.
-{{EX:<sid>}} has no more than three digits.
-
-The LDAP Content Synchronization operation of a pre-existing
-session uses the session log store in order to reduce the amount
-of synchronization traffic. If the replica is not so outdated that
-it can be made up-to-date by the information in the session store,
-the provider slapd will send the in-scope entries added to or modified
-within the replication content together with the identities of the
-scoped-out entries to the consumer slapd. If the replica status is
-beyond the coverage of the history store, then the provider slapd will
-send the changed in-scope entries together with the identities of the
-unchanged in-scope entries. The consumer slapd will then remove those
-entries in the replica which is not identified as present in the
-master content.
-
-An access control mechanism is to be further provided to
-make the session joining controllable.
-
-
H3: LDBM Database Directives
Directives in this category only apply to a {{TERM:LDBM}} database.
> [aci=<attrname>]
> <access> ::= [self]{<level>|<priv>}
> <level> ::= none | auth | compare | search | read | write
-> <priv> ::= {=|+|-}{w|r|s|c|x}+
+> <priv> ::= {=|+|-}{w|r|s|c|x|0}+
> <control> ::= [stop | continue | break]
where the <what> part selects the entries and/or attributes to which
commonly selected in two ways: by DN and by filter. The following
qualifiers select entries by DN:
-> by *
-> by dn[.<basic-style>]=<regex>
-> by dn.<scope-style>=<DN>
+> to *
+> to dn[.<basic-style>]=<regex>
+> to dn.<scope-style>=<DN>
The first form is used to select all entries. The second form may
be used to select entries by matching a regular expression against
Entries may also be selected using a filter:
-> by filter=<ldap filter>
+> to filter=<ldap filter>
where <ldap filter> is a string representation of an LDAP
search filter, as described in {{REF:RFC2254}}. For example:
-> by filter=(objectClass=person)
+> to filter=(objectClass=person)
Note that entries may be selected by both DN and filter by
including both qualifiers in the <what> clause.
-> by dn.one="ou=people,o=suffix" filter=(objectClass=person)
+> to dn.one="ou=people,o=suffix" filter=(objectClass=person)
Attributes within an entry are selected by including a comma-separated
list of attribute names in the <what> selector:
!block table; colaligns="LRL"; coltags="EX,EX,N"; align=Center; \
title="Table 5.4: Access Levels"
Level Privileges Description
-none no access
+none =0 no access
auth =x needed to bind
compare =cx needed to compare
search =scx needed to apply search filters
H3: Access Control Examples
-The access control facility described above is quite powerful.
-This section shows some examples of its use. First, some
-simple examples:
+The access control facility described above is quite powerful. This
+section shows some examples of its use for descriptive purposes.
+
+A simple example:
> access to * by * read
client has not establish sufficient security protections, the
implicit {{EX:by * none}} clause would be applied.
-The following example shows the use of a style specifiers
-to select the entries by DN in two access directives where
-ordering is significant.
+The following example shows the use of a style specifiers to select
+the entries by DN in two access directives where ordering is
+significant.
> access to dn.children="dc=example,dc=com"
> by * search
> access to dn.subtree="dc=example,dc=com" attr=homePhone
> by self write
-> by dn.children=dc=example,dc=com" search
-> by peername=IP:10\..+ read
+> by dn.children="dc=example,dc=com" search
+> by peername.regex=IP:10\..+ read
> access to dn.subtree="dc=example,dc=com"
> by self write
> by dn.children="dc=example,dc=com" search
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