Provided by: slapd_2.4.11-0ubuntu6_i386 bug


       slapd - Stand-alone LDAP Daemon


       /usr/sbin/slapd  [-[4|6]]  [-T {acl|add|auth|cat|dn|index|passwd|test}]
       [-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 {a|c|d|i|p|t|acl|auth}
              Run in Tool mode. The additional argument selects whether to run
              as slapadd, slapcat, slapdn, slapindex, slappasswd, 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 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  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 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 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/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.

              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

              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  and
              csn.   rid  identifies  a replication thread within the consumer
              server and  is  used  to  find  the  syncrepl  specification  in
              slapd.conf(5)  having the matching replication identifier in its
              definition. The rid must be provided  in  order  for  any  other
              specified  values to be used.  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.

       -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,    "-o    slp=(tree=production),(server-
                     type=OpenLDAP),(server-version=2.3.20)" 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


       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
       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.access(5),   slapacl(8),   slapadd(8),
       slapauth(8),   slapcat(8),   slapdn(8),   slapindex(8),  slappasswd(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.