Section (8) slapd
slapd — Stand-alone LDAP Daemon
−6 ] [
−T acl | a [dd] | auth | c [at] | d
[n] | i [ndex] | p [asswd] | s [chema] | t [est] ] [
−d debug−level ] [
slapd−config−file ] [
−h URLs ] [
−n service−name ] [
−s syslog−level ] [
syslog−local−user ] [
−o option[= value] ] [
−r directory ] [
−u user ] [
−g group ] [
−c cookie ]
Slapd is the
stand-alone LDAP daemon. It listens for LDAP connections on
any number of ports (default
389), responding to the LDAP operations it
receives over these connections. slapd is typically invoked
at boot time, usually out of
/etc/rc.local. Upon startup, slapd normally forks and
disassociates itself from the invoking tty. If configured in
the config file (or config directory), the slapd process will print
its process ID (see getpid(2)) to a
.pid file, as well as the
command line options during invocation to an
.args file (see slapd.conf(5)). If the
−d flag is given, even with
a zero argument, slapd will not fork and
disassociate from the invoking tty.
See the OpenLDAP Administrator_zsingle_quotesz_s Guide for more details on slapd.
Listen on IPv4 addresses only.
Listen on IPv6 addresses only.
Run in Tool mode. The
toolargument selects whether to run as slapadd, slapcat, slapdn, slapindex, slappasswd, slapschema, or slaptest (slapacl and slapauth need the entire
authoption value to be spelled out, as
ais reserved to slapadd). This option should be the first option specified when it is used; any remaining options will be interpreted by the corresponding slap tool program, according to the respective man pages. Note that these tool programs will usually be symbolic links to slapd. This option is provided for situations where symbolic links are not provided or not usable.
Turn on debugging as defined by
debug-level. If this option is specified, even with a zero argument, slapd will not fork or disassociate from the invoking terminal. Some general operation and status messages are printed for any value of
debug-levelis taken as a bit string, with each bit corresponding to a different kind of debugging information. See <ldap_log.h> for details. Comma-separated arrays of friendly names can be specified to select debugging output of the corresponding debugging information. All the names recognized by the
logleveldirective described in slapd.conf(5) are supported. If
?, a list of installed debug-levels is printed, and slapd exits.
Remember that if you turn on packet logging, packets containing bind passwords will be output, so if you redirect the log to a logfile, that file should be read-protected.
This option tells slapd at what debug-level debugging statements should be logged to the syslog(8) facility. The value
syslog-levelcan be set to any value or combination allowed by the
−dswitch. Slapd logs all messages selected by
syslog-levelat the syslog(3) severity debug-level
DEBUG, on the unit specified with
Specifies the service name for logging and other purposes. Defaults to basename of argv, i.e.: slapd.
Selects the local user of the syslog(8) facility. Value can be
LOCAL7, as well as
DAEMON. The default is
LOCAL4. However, this option is only permitted on systems that support local users with the syslog(8) facility. Logging to syslog(8) occurs at the DEBUG severity debug-level.
Specifies the slapd configuration file. The default is
Specifies the slapd configuration directory. The default is
ETCDIR/slapd.d. If both
−Fare specified, the config file will be read and converted to config directory format and written to the specified directory. If neither option is specified, slapd will attempt to read the default config directory before trying to use the default config file. If a valid config directory exists then the default config file is ignored. All of the slap tools that use the config options observe this same behavior.
slapd will by default serve
ldap:///(LDAP over TCP on all interfaces on default LDAP port). That is, it will bind using INADDR_ANY and port
−hoption may be used to specify LDAP (and other scheme) URLs to serve. For example, if slapd is given
−h ldap://127.0.0.1:9009/ ldaps:/// ldapi:///, it will listen on 127.0.0.1:9009 for LDAP, 0.0.0.0:636 for LDAP over TLS, and LDAP over IPC (Unix domain sockets). Host 0.0.0.0 represents INADDR_ANY (any interface). A space separated list of URLs is expected. The URLs should be of the LDAP, LDAPS, or LDAPI schemes, and generally without a DN or other optional parameters (excepting as discussed below). Support for the latter two schemes depends on selected configuration options. Hosts may be specified by name or IPv4 and IPv6 address formats. Ports, if specified, must be numeric. The default ldap:// port is
389and the default ldaps:// port is
For LDAP over IPC,
nameis the name of the socket, and no
portis required, nor allowed; note that directory separators must be URL-encoded, like any other characters that are special to URLs; so the socket
must be specified as
The default location for the IPC socket is LOCALSTATEDIR/run/ldapi
The listener permissions are indicated by x−mod=−rwxrwxrwx, x−mod=0777 or x−mod=777, where any of the rwx can be − to suppress the related permission, while any of the 7 can be any legal octal digit, according to chmod(1). The listeners can take advantage of the x−mod extension to apply rough limitations to operations, e.g. allow read operations (r, which applies to search and compare), write operations (w, which applies to add, delete, modify and modrdn), and execute operations (x, which means bind is required). User permissions apply to authenticated users, while other apply to anonymous users; group permissions are ignored. For example, ldap:///????x−mod=−rw−−−−−−− means that read and write is only allowed for authenticated connections, and bind is required for all operations. This feature is experimental, and requires to be manually enabled at configure time.
Specifies a directory to become the root directory. slapd will change the current working directory to this directory and then chroot(2) to this directory. This is done after opening listeners but before reading any configuration file or initializing any backend. When used as a security mechanism, it should be used in conjunction with
slapd will run slapd with the specified user name or id, and that user_zsingle_quotesz_s supplementary group access list as set with initgroups(3). The group ID is also changed to this user_zsingle_quotesz_s gid, unless the
−goption is used to override. Note when used with
−r, slapd will use the user database in the change root environment.
Note that on some systems, running as a non-privileged user will prevent passwd back-ends from accessing the encrypted passwords. Note also that any shell back-ends will run as the specified non-privileged user.
slapd will run with the specified group name or id. Note when used with
−r, slapd will use the group database in the change root environment.
This option provides a cookie for the syncrepl replication consumer. The cookie is a comma separated list of
name=valuepairs. Currently supported syncrepl cookie fields are rid, sid, and csn.
rididentifies a replication thread within the consumer server and is used to find the syncrepl specification in slapd.conf(5) or slapd-config(5) having the matching replication identifier in its definition. The
ridmust be provided in order for any other specified values to be used.
sidis the server id in a multi-master/mirror-mode configuration.
csnis the commit sequence number received by a previous synchronization and represents the state of the consumer replica content which the syncrepl engine will synchronize to the current provider content. In case of
multi-masterreplication agreement, multiple
csnvalues, semicolon separated, can appear. Use only the
ridpart to force a full reload.
This option provides a generic means to specify options without the need to reserve a separate letter for them.
It supports the following options:
When SLP support is compiled into slapd, disable it (off), enable it by registering at SLP DAs without specific SLP attributes (on), or with specific SLP attributes
slp-attrsthat must be an SLP attribute list definition according to the SLP standard.
slp=(tree=production),(server-type=OpenLDAP),(server−version=2.4.15)registers at SLP DAs with the three SLP attributes tree, server-type and server-version that have the values given above. This allows one to specifically query the SLP DAs for LDAP servers holding the
productiontree in case multiple trees are available.
To start slapd and have it fork and detach from the terminal and start serving the LDAP databases defined in the default config file, just type:
To start slapd with an alternate configuration file, and turn on voluminous debugging which will be printed on standard error, type:
LIBEXECDIR/slapd −f /var/tmp/slapd.conf −d 255
To test whether the configuration file is correct or not, type:
OpenLDAP Administrator_zsingle_quotesz_s Guide (http://www.OpenLDAP.org/doc/admin/)