Ubuntu Manpage: sssd - System Security Services Daemon

Provided by: sssd-common_2.9.4-1.1ubuntu6.1_amd64

NAME

       sssd - System Security Services Daemon

SYNOPSIS

       sssd [options]

DESCRIPTION

       SSSD provides a set of daemons to manage access to remote directories and authentication
       mechanisms. It provides an NSS and PAM interface toward the system and a pluggable backend
       system to connect to multiple different account sources as well as D-Bus interface. It is
       also the basis to provide client auditing and policy services for projects like FreeIPA.
       It provides a more robust database to store local users as well as extended user data.

OPTIONS

-d,--debug-level LEVEL
SSSD supports two representations for specifying the debug level. The simplest is to
specify a decimal value from 0-9, which represents enabling that level and all
lower-level debug messages. The more comprehensive option is to specify a hexadecimal
bitmask to enable or disable specific levels (such as if you wish to suppress a
level).

Please note that each SSSD service logs into its own log file. Also please note that
enabling “debug_level” in the “[sssd]” section only enables debugging just for the
sssd process itself, not for the responder or provider processes. The “debug_level”
parameter should be added to all sections that you wish to produce debug logs from.

In addition to changing the log level in the config file using the “debug_level”
parameter, which is persistent, but requires SSSD restart, it is also possible to
change the debug level on the fly using the sss_debuglevel(8) tool.

Currently supported debug levels:

0, 0x0010: Fatal failures. Anything that would prevent SSSD from starting up or causes
it to cease running.

1, 0x0020: Critical failures. An error that doesn't kill SSSD, but one that indicates
that at least one major feature is not going to work properly.

2, 0x0040: Serious failures. An error announcing that a particular request or
operation has failed.

3, 0x0080: Minor failures. These are the errors that would percolate down to cause the
operation failure of 2.

4, 0x0100: Configuration settings.

5, 0x0200: Function data.

6, 0x0400: Trace messages for operation functions.

7, 0x1000: Trace messages for internal control functions.

8, 0x2000: Contents of function-internal variables that may be interesting.

9, 0x4000: Extremely low-level tracing information.

9, 0x20000: Performance and statistical data, please note that due to the way requests
are processed internally the logged execution time of a request might be longer than
it actually was.

10, 0x10000: Even more low-level libldb tracing information. Almost never really
required.

To log required bitmask debug levels, simply add their numbers together as shown in
following examples:

Example: To log fatal failures, critical failures, serious failures and function data
use 0x0270.

Example: To log fatal failures, configuration settings, function data, trace messages
for internal control functions use 0x1310.

Note: The bitmask format of debug levels was introduced in 1.7.0.

Default: 0x0070 (i.e. fatal, critical and serious failures; corresponds to setting 2
in decimal notation)

--debug-timestamps=mode
1: Add a timestamp to the debug messages

0: Disable timestamp in the debug messages

Default: 1

--debug-microseconds=mode
1: Add microseconds to the timestamp in debug messages

0: Disable microseconds in timestamp

Default: 0

--logger=value
Location where SSSD will send log messages.

stderr: Redirect debug messages to standard error output.

files: Redirect debug messages to the log files. By default, the log files are stored
in /var/log/sssd and there are separate log files for every SSSD service and domain.

journald: Redirect debug messages to systemd-journald

Default: not set (fall back to journald if available, otherwise to stderr)

-D,--daemon
Become a daemon after starting up.

-i,--interactive
Run in the foreground, don't become a daemon.

-c,--config
Specify a non-default config file. The default is /etc/sssd/sssd.conf. For reference
on the config file syntax and options, consult the sssd.conf(5) manual page.

-g,--genconf
Do not start the SSSD, but refresh the configuration database from the contents of
/etc/sssd/sssd.conf and exit.

-s,--genconf-section
Similar to “--genconf”, but only refresh a single section from the configuration file.
This option is useful mainly to be called from systemd unit files to allow
socket-activated responders to refresh their configuration without requiring the
administrator to restart the whole SSSD.

-?,--help
Display help message and exit.

--version
Print version number and exit.

SIGNALS

       SIGTERM/SIGINT
           Informs the SSSD to gracefully terminate all of its child processes and then shut down
           the monitor.

       SIGHUP
           Tells the SSSD to stop writing to its current debug file descriptors and to close and
           reopen them. This is meant to facilitate log rolling with programs like logrotate.

       SIGUSR1
           Tells the SSSD to simulate offline operation for the duration of the “offline_timeout”
           parameter. This is useful for testing. The signal can be sent to either the sssd
           process or any sssd_be process directly.

       SIGUSR2
           Tells the SSSD to go online immediately. This is useful for testing. The signal can be
           sent to either the sssd process or any sssd_be process directly.

NOTES

       If the environment variable SSS_NSS_USE_MEMCACHE is set to "NO", client applications will
       not use the fast in-memory cache.

       If the environment variable SSS_LOCKFREE is set to "NO", requests from multiple threads of
       a single application will be serialized.

AUTHORS

       The SSSD upstream - https://github.com/SSSD/sssd/