slapd - Stand-alone LDAP Daemon
/usr/libexec/slapd [-[4|6]] [-d debug-level] [-f slapd-config-file] [-h URLs] [-n service-name] [-s syslog-level] [-l syslog-local-user]
[-r directory] [-u user] [-g group] [-t]
Slapd is the stand-alone LDAP daemon. It listens for LDAP connections on any number of ports (default 389), responding to the LDAP opera-
tions it receives over these connections. slapd is typically invoked at boot time, usually out of /etc/rc.local. Upon startup, slapd nor-
mally forks and disassociates itself from the invoking tty. If configured in /etc/openldap/slapd.conf, 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.
Slapd can be configured to provide replicated service for a database with the help of slurpd, the standalone LDAP update replication dae-
mon. See slurpd(8) for details.
See the "OpenLDAP Administrator's Guide" for more details on slapd.
-4 Listen on IPv4 addresses only.
-6 Listen on IPv6 addresses only.
Turn on debugging as defined by debug-level. If this option is specified, even with a zero argument, slapd will not fork or disas-
sociate 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. See <ldap.h> for
details. 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 level debugging statements should be logged to the syslog(8) facility.
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. Values can be LOCAL0, LOCAL1, and so on, up to LOCAL7. The default is LOCAL4.
However, this option is only permitted on systems that support local users with the syslog(8) facility.
Specifies the slapd configuration file. The default is /etc/openldap/slapd.conf.
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://127.0.0.1:9009/ ldaps:/// ldapi:///" , It will bind 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. A space separated list of URLs is expected. The URLs should be of
LDAP (ldap://) or LDAP over TLS (ldaps://) or LDAP over IPC (ldapi://) scheme without a DN or other optional parameters, except an
experimental extension to indicate the permissions of the underlying socket, on those OSes that honor them. 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
specfied, must be numeric. The default ldap:// port is 389 and the default ldaps:// port is 636. The socket permissions for LDAP
over IPC 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 (note, however, that sockets only honor the "w" permission), while any of the "7" can be any legal octal digit, according
Specifies a chroot "jail" directory. slapd will chdir(2) then chroot(2) to this directory after opening listeners but before read-
ing any configuration file or initializing any backend.
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.
slapd will run with the specified group name or id.
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.
-t slapd will read the configuration file (the default if none is given with the -f switch) and check its syntax, without opening any
listener or database.
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/libexec/slapd -f /var/tmp/slapd.conf -d 255
To test whether the configuration file is correct or not, type:
ldap(3), slapd.conf(5), slapd.access(5), slurpd(8)
"OpenLDAP Administrator's Guide" (http://www.OpenLDAP.org/doc/admin/)
OpenLDAP is developed and maintained by The OpenLDAP Project (http://www.openldap.org/). OpenLDAP is derived from University of Michigan
LDAP 3.3 Release.
OpenLDAP 2.1.X RELEASEDATE SLAPD(8C)