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SLAPD(8C)							     SLAPD(8C)

       slapd - Stand-alone LDAP	Daemon

       /usr/local/libexec/slapd	 [-V[V[V]]  [-4|-6] [-T	{acl|a[dd]|auth|c[at]|
       d[n]|i[ndex]|p[asswd]|s[chema]|t[est]}] [-d debug-level]	[-f slapd-con-
       fig-file]   [-F slapd-config-directory]	 [-h URLs]   [-n service-name]
       [-s syslog-level] [-l syslog-local-user]	[-o option[=value]] [-r	direc-
       tory] [-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's Guide"	for more details on slapd.

	      Print version info and proceed with startup.  If -VV  is	given,
	      exit  after  providing version info. If -VVV is given, addition-
	      ally provide information on static overlays and backends.

       -4     Listen on	IPv4 addresses only.

       -6     Listen on	IPv6 addresses only.

       -T tool
	      Run in Tool mode.	The tool argument selects whether  to  run  as
	      slapadd,	slapcat, slapdn, slapindex, slappasswd,	slapschema, or
	      slaptest (slapacl	and slapauth need the entire acl and auth  op-
	      tion  value  to  be  spelled  out, as a is reserved to slapadd).
	      This option should be the	first  option  specified  when	it  is
	      used;  any  remaining  options will be interpreted by the	corre-
	      sponding 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.

       -d debug-level
	      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-level.
	      debug-level  is taken as a bit string, with each bit correspond-
	      ing  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	corre-
	      sponding debugging information.  All the names recognized	by the
	      loglevel directive described in slapd.conf(5) are	supported.  If
	      debug-level  is  ?, 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.

       -s syslog-level
	      This option tells	slapd at what debug-level debugging statements
	      should  be  logged to the	syslog(8) facility.  The value syslog-
	      level can	be set to any value or combination allowed by  the  -d
	      switch.  Slapd logs all messages selected	by syslog-level	at the
	      syslog(3)	severity debug-level DEBUG, on the unit	specified with

       -n service-name
	      Specifies	 the service name for logging and other	purposes.  De-
	      faults to	basename of argv[0], i.e.: "slapd".

       -l syslog-local-user
	      Selects the local	user of	the syslog(8) facility.	Value  can  be
	      LOCAL0, through LOCAL7, as well as USER and 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.

       -f slapd-config-file
	      Specifies	the slapd configuration	file. The default is  /usr/lo-

       -F slapd-config-directory
	      Specifies	 the  slapd  configuration  directory.	The default is
	      /usr/local/etc/openldap/slapd.d.	If both	-f and -F  are	speci-
	      fied,  the  config file will be read and converted to config di-
	      rectory format and written to the	specified directory.  If  nei-
	      ther 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.

       -h URLlist
	      slapd  will  by default serve ldap:/// (LDAP over	TCP on all in-
	      terfaces on default LDAP port).  That is,	it will	bind using IN-
	      ADDR_ANY	and  port  389.	  The -h option	may be used to specify
	      LDAP (and	other scheme) URLs to serve.  For example, if slapd is
	      given  -h	 "ldap:// ldaps:/// ldapi:///", it will
	      listen on for LDAP,  for  LDAP  over
	      TLS, and LDAP over IPC (Unix domain sockets).  Host rep-
	      resents INADDR_ANY (any interface).  A space separated  list  of
	      URLs is expected.	 The URLs should be of the LDAP, PLDAP,	LDAPS,
	      PLDAPS, or LDAPI schemes,	and generally without a	 DN  or	 other
	      optional parameters (excepting as	discussed below).  Support for
	      the latter three schemes depends on selected  configuration  op-
	      tions.  Hosts  may be specified by name or IPv4 and IPv6 address
	      formats.	Ports, if specified, must  be  numeric.	  The  default
	      ldap://  port  is	389 and	the default ldaps:// port is 636, same
	      for the proxy enabled variants.

	      The PLDAP	and PLDAPS URL schemes provide support for the HAProxy
	      proxy  protocol version 2, which allows a	load balancer or proxy
	      server to	provide	the remote client IP address to	 slapd	to  be
	      used  for	 access	control	or logging. Ports configured for PLDAP
	      or PLDAPS	will only accept connections that include  the	neces-
	      sary proxy protocol header. Connections to these ports should be
	      restricted at the	network	level to only trusted  load  balancers
	      or  proxies  to  avoid  spoofing of client IP addresses by third

	      For LDAP over IPC, name is the name of the socket, and  no  port
	      is 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 /var/db/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 limita-
	      tions to operations, e.g.	allow read operations ("r", which  ap-
	      plies  to	 search	and compare), write operations ("w", which ap-
	      plies 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.

       -r directory
	      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 listen-
	      ers but before reading any configuration	file  or  initializing
	      any  backend.   When  used as a security mechanism, it should be
	      used in conjunction with -u and -g options.

       -u user
	      slapd will run slapd with	the specified user  name  or  id,  and
	      that  user's  supplementary  group access	list as	set with init-
	      groups(3).  The group ID is also changed to this user's gid, un-
	      less the -g option 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.

       -g group
	      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.

       -c cookie
	      This  option provides a cookie for the syncrepl replication con-
	      sumer.  The cookie is  a	comma  separated  list	of  name=value
	      pairs.  Currently	supported syncrepl cookie fields are rid, sid,
	      and csn.	rid identifies a replication thread  within  the  con-
	      sumer  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 rid must be provided in order
	      for any other specified values to	be used.  sid is the server id
	      in  a  multi-provider configuration.  csn	is the commit sequence
	      number received by a previous synchronization and	represents the
	      state  of	 the  consumer	content	which the syncrepl engine will
	      synchronize to the current provider content.  In case of	multi-
	      provider	replication  agreement,	multiple csn values, semicolon
	      separated, can appear.  Use only the rid part to	force  a  full

       -o option[=value]
	      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
		      enable it	by registering at SLP DAs without specific SLP
		     attributes	(on), or with specific SLP attributes  slp-at-
		     trs that must be an SLP attribute list definition accord-
		     ing to the	SLP standard.

		     For  example,  "slp=(tree=production),(server-type=OpenL-
		     DAP),(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  production  tree in case multiple trees are

       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


       To start	slapd with an alternate	configuration file, and	turn on	 volu-
       minous debugging	which will be printed on standard error, type:

	    /usr/local/libexec/slapd -f	/var/tmp/slapd.conf -d 255

       To test whether the configuration file is correct or not, type:

	    /usr/local/libexec/slapd -Tt

       ldap(3),	 slapd.conf(5),	 slapd-config(5), slapd.access(5), slapacl(8),
       slapadd(8), slapauth(8),	 slapcat(8),  slapdn(8),  slapindex(8),	 slap-
       passwd(8), slapschema(8), slaptest(8).

       "OpenLDAP Administrator's Guide"	(


       OpenLDAP	 Software  is developed	and maintained by The OpenLDAP Project
       <>.  OpenLDAP Software is derived from the Uni-
       versity of Michigan LDAP	3.3 Release.

OpenLDAP 2.6.1			  2022/01/20			     SLAPD(8C)


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