Provided by: slapd_2.4.42+dfsg-2ubuntu3.13_amd64 bug


       slapd - Stand-alone LDAP Daemon


       /usr/sbin/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-config-file] [-F slapd-config-directory] [-h URLs] [-n service-
       name]    [-s syslog-level]   [-l 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'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 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.

       -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 corresponding to
              a different kind of debugging  information.   Comma-separated  arrays  of  friendly
              names  can  be  specified to select debugging output of the corresponding 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-

       -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 /etc/ldap/slapd.conf.

       -F slapd-config-directory
              Specifies  the slapd configuration directory. The default is /etc/ldap/slapd.d.  If
              both -f and -F are 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.

       -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 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 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/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.

       -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  listeners  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 initgroups(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 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 consumer.  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
              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
              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 represents the state  of
              the  consumer  replica  content  which  the syncrepl 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 (off),
                      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=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 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 type:


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

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

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

            /usr/sbin/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),   slappasswd(8),    slapschema(8),

       "OpenLDAP Administrator's Guide" (




       OpenLDAP    Software    is    developed   and   maintained   by   The   OpenLDAP   Project
       <>.  OpenLDAP Software is derived from University of Michigan LDAP
       3.3 Release.