slapd - Stand-alone LDAP Daemon


       /usr/sbin/in.slapd          [-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.


       -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
              option  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-leveli at
              the syslog(3) severity debug-level DEBUG, on the unit  specified
              with -l.

       -n service-name
              Specifies  the  service  name  for  logging  and other purposes.
              Defaults 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

       -F slapd-config-directory
              Specifies  the  slapd  configuration  directory.  The default is
              /etc/openldap/slapd.d.  If both -f and  -F  are  specified,  the
              config  file will be read and converted to config directory for-
              mat 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.

       -h URLlist
              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 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, LDAPS, or
              LDAPI schemes, and generally without  a  DN  or  other  optional
              parameters (excepting as discussed below).  Support for the lat-
              ter 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 389 and the default ldaps:// port is 636.

              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/lib/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
              applies to search and compare),  write  operations  ("w",  which
              applies  to  add, delete, modify and modrdn), and execute opera-
              tions ("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,
              unless the -g option is used to override.  Note when  used  with
              -r, slapd will use the user database in the change root environ-

              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-master/mirror-mode configuration.  csn is the commit
              sequence number received by a previous synchronization and  rep-
              resents the state of the consumer replica content which the syn-
              crepl engine will synchronize to the current  provider  content.
              In  case  of  mirror-mode or multi-master replication agreement,
              multiple csn values, semicolon separated, can appear.  Use  only
              the rid part to force a full reload.

       -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-
                     attrs  that  must  be  an  SLP  attribute list definition
                     according 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 to
                     specifically query the SLP DAs for LDAP  servers  holding
                     the production tree 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


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

            /usr/sbin/in.slapd -f /var/tmp/slapd.conf -d 255

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

            /usr/sbin/in.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 Univer-
       sity of Michigan LDAP 3.3 Release.

OpenLDAP 2.4.36                   2013/08/17                         SLAPD(8C)

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