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Man Pages


Manual Reference Pages  -  SASL (6)

NAME

sasl - The SASL application

CONTENTS

Description

DESCRIPTION

The SASL application provides the following services:

* alarm_handler
* overload (deprecated)
* rb
* release_handler
* systools

The SASL application also includes error_logger event handlers for formatting SASL error and crash reports.

Note:
The SASL application in OTP has nothing to do with "Simple Authentication and Security Layer" (RFC 4422).

ERROR LOGGER EVENT HANDLERS

The following error logger event handlers are used by the SASL application.

sasl_report_tty_h: Formats and writes supervisor reports, crash reports, and progress reports to stdio. This error logger event handler uses error_logger_format_depth in the Kernel application to limit how much detail is printed in crash and supervisor reports.
sasl_report_file_h: Formats and writes supervisor reports, crash report, and progress report to a single file. This error logger event handler uses error_logger_format_depth in the Kernel application to limit the details printed in crash and supervisor reports.
log_mf_h: This error logger writes all events sent to the error logger to disk. Multiple files and log rotation are used. For efficiency reasons, each event is written as a binary. For more information about this handler, see the STDLIB Reference Manual.

To activate this event handler, three SASL configuration parameters must be set, error_logger_mf_dir, error_logger_mf_maxbytes, and error_logger_mf_maxfiles. The next section provides more information about the configuration parameters.

CONFIGURATION

The following configuration parameters are defined for the SASL application. For more information about configuration parameters, see app(4) in Kernel.

All configuration parameters are optional.

sasl_error_logger = Value : Value is one of the following:
tty: Installs sasl_report_tty_h in the error logger. This is the default option.
{file,FileName}: Installs sasl_report_file_h in the error logger. All reports go to file FileName, which is a string.
{file,FileName,Modes}: Same as {file,FileName}, except that Modes allows you to specify the modes used for opening the FileName given to the file:open/2 call. When not specified, Modes defaults to [write]. Use [append] to have the FileName open in append mode. FileName is a string.
false: No SASL error logger handler is installed.
errlog_type = error | progress | all : Restricts the error logging performed by the specified sasl_error_logger to error reports or progress reports, or both. Default is all.
error_logger_mf_dir = string() | false : Specifies in which directory log_mf_h is to store its files. If this parameter is undefined or false, the log_mf_h handler is not installed.
error_logger_mf_maxbytes = integer() : Specifies the maximum size of each individual file written by log_mf_h. If this parameter is undefined, the log_mf_h handler is not installed.
error_logger_mf_maxfiles = 0<integer()<256 : Specifies the number of files used by log_mf_h. If this parameter is undefined, the log_mf_h handler is not installed.
overload_max_intensity = float() > 0 : Specifies the maximum intensity for overload. Default is 0.8.

Note that the overload module is deprected and will be removed in a future release.

overload_weight = float() > 0 : Specifies the overload weight. Default is 0.1.

Note that the overload module is deprected and will be removed in a future release.

start_prg = string() : Specifies the program to be used when restarting the system during release installation. Default is $OTP_ROOT/bin/start.
masters = [atom()] : Specifies the nodes used by this node to read/write release information. This parameter is ignored if parameter client_directory is not set.
client_directory = string() : This parameter specifies the client directory at the master nodes. For details, see Release Handling in OTP Design Principles. This parameter is ignored if parameter masters is not set.
static_emulator = true | false : Indicates if the Erlang emulator is statically installed. A node with a static emulator cannot switch dynamically to a new emulator, as the executable files are written into memory statically. This parameter is ignored if parameters masters and client_directory are not set.
releases_dir = string() : Indicates where the releases directory is located. The release handler writes all its files to this directory. If this parameter is not set, the OS environment parameter RELDIR is used. By default, this is $OTP_ROOT/releases.
utc_log = true | false : If set to true, all dates in textual log outputs are displayed in Universal Coordinated Time with the string UTC appended.

SEE ALSO

alarm_handler(3), error_logger(3), log_mf_h(3), overload(3), rb(3), release_handler(3), systools(3)

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Ericsson AB SASL (7) sasl 2.7

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