diff options
Diffstat (limited to 'lib/kernel/doc/src/kernel_app.xml')
| -rw-r--r-- | lib/kernel/doc/src/kernel_app.xml | 141 |
1 files changed, 36 insertions, 105 deletions
diff --git a/lib/kernel/doc/src/kernel_app.xml b/lib/kernel/doc/src/kernel_app.xml index 7894600c21..ebc7962f29 100644 --- a/lib/kernel/doc/src/kernel_app.xml +++ b/lib/kernel/doc/src/kernel_app.xml @@ -165,78 +165,34 @@ <p>Permissions are described in <seealso marker="application#permit/2"><c>application:permit/2</c></seealso>.</p> </item> - <tag><c>logger_dest = Value</c></tag> + <tag><marker id="logger"/><c>logger = [Config]</c></tag> <item> - <p><c>Value</c> is one of:</p> - <taglist> - <tag><c>tty</c></tag> - <item><p>Installs the standard handler, <seealso marker="logger_std_h"> - <c>logger_std_h(3)</c></seealso>, with <c>type</c> set - to <c>standard_io</c>. This is the default - option.</p></item> - <tag><c>{file, FileName}</c></tag> - <item><p>Installs the standard handler, <seealso marker="logger_std_h"> - <c>logger_std_h(3)</c></seealso>, with <c>type</c> set - to <c>{file, FileName}</c>, where <c>FileName</c> - is a string. The file is opened with encoding UTF-8.</p></item> - <tag><c>{disk_log, FileName}</c></tag> - <item><p>Installs the disk_log handler, <seealso marker="logger_disk_log_h"> - <c>logger_disk_log_h(3)</c></seealso>, with <c>file</c> set - to <c>FileName</c> (a string), and possibly other disk_log - parameters set by the environment variables - <c>logger_disk_log_type</c>, <c>logger_disk_log_maxfiles</c> and - <c>logger_disk_log_maxbytes</c>, - see <seealso marker="#disk_log_vars">below</seealso>. The - file is opened with encoding UTF-8.</p></item> - <tag><c>false</c></tag> - <item> - <p>No standard handler is installed, but - the initial, primitive handler is kept, printing - raw event messages to <c>tty</c>.</p> - </item> - <tag><c>silent</c></tag> - <item> - <p>No standard handler is started, and the initial, - primitive handler is removed.</p> - </item> - </taglist> + <p>Specifies how <seealso marker="logger"><c>logger</c></seealso> should be + configured.</p> + <p>For more details and examples, see the <seealso marker="logger_chapter#logger"> + Configuration</seealso> section in the <seealso marker="logger_chapter"> + Logger User's Guide</seealso>. + </p> </item> - <tag><c>logger_level = Level</c></tag> + <tag><marker id="logger_level"/><c>logger_level = Level</c></tag> <item> - <p><c>Value = emergency | alert | critical | error | warning | + <p><c>Level = emergency | alert | critical | error | warning | notice | info | debug</c></p> <p>This parameter specifies which log levels to log. The specified level, and all levels that are more severe, will be logged.</p> - <p>This configuration parameter is used both for the global - logger level, and for the standard handler started by - the Kernel application (see <c>logger_dest</c> variable above).</p> + <p>It is possible to change this variable at run-time + using <seealso marker="logger:set_logger_config/1"> + <c>logger:set_logger_config(#{ level => error })</c></seealso>. + .</p> <p>The default value is <c>info</c>.</p> </item> - <tag><marker id="disk_log_vars"/> - <c>logger_disk_log_type = halt | wrap</c></tag> - <item/> - <tag><c>logger_disk_log_maxfiles = integer()</c></tag> - <item/> - <tag><c>logger_disk_log_maxbytes = integer()</c></tag> - <item> - <p>If <c>logger_dest</c> is set to {disk_log,File}, then these - parameters specify the configuration to use when opening the - disk log file. They specify the type of disk log, the - maximum number of files (if the type is wrap) and the - maximum size of each file, respectively.</p> - <p>The default values are:</p> - <code> -logger_disk_log_type = wrap -logger_disk_log_maxfiles = 10 -logger_disk_log_maxbytes = 1048576</code> - </item> <tag><marker id="logger_sasl_compatible"/> <c>logger_sasl_compatible = boolean()</c></tag> <item> - <p>If this parameter is set to true, then the logger handler - started by kernel will not log any progress-, crash-, or - supervisor reports. If the SASL application is started, + <p>If this parameter is set to true, then the <c>default</c> logger handler + will not log any progress-, crash-, or supervisor reports. + If the SASL application is started, these log events will be sent to a second handler instance named <c>sasl_h</c>, according to values of the SASL environment variables <c>sasl_error_logger</c> @@ -247,6 +203,8 @@ logger_disk_log_maxbytes = 1048576</code> <p>See chapter <seealso marker="logger_chapter#compatibility">Backwards compatibility with error_logger</seealso> for more information about handling of the so called SASL reports.</p> + <note><p>This configuration option only effects the <c>default</c> + and <c>sasl</c> handler. Any other handlers are uneffected.</p></note> </item> <tag><marker id="logger_log_progress"/> <c>logger_log_progress = boolean()</c></tag> @@ -254,51 +212,13 @@ logger_disk_log_maxbytes = 1048576</code> <p>If <c>logger_sasl_compatible = false</c>, then <c>logger_log_progress</c> specifies if progress reports from <c>supervisor</c> - and <c>application_controller</c> shall be logged or - not.</p> + and <c>application_controller</c> shall be logged by the + default logger.</p> <p>If <c>logger_sasl_compatible = true</c>, then <c>logger_log_progress</c> is ignored.</p> - </item> - <tag><marker id="logger_format_depth"/> - <c>logger_format_depth = Depth</c></tag> - <item> - <p>Can be used to limit the size of the - formatted output from the logger handlers.</p> - - <p><c>Depth</c> is a positive integer representing the maximum - depth to which terms are printed by the logger - handlers included in OTP. This - configuration parameter is used by the default formatter, - <seealso marker="logger_formatter"><c>logger_formatter(3)</c></seealso>, - unless the formatter's <c>depth</c> parameter is explicitly set. - (If you have implemented your own formatter, this configuration - parameter has no effect on that.)</p> - - <p><c>Depth</c> is used as follows: Format strings - received by the formatter are rewritten. - The format controls <c>~p</c> and <c>~w</c> are replaced with - <c>~P</c> and <c>~W</c>, respectively, and <c>Depth</c> is - used as the depth parameter. For details, see - <seealso marker="stdlib:io#format/2"><c>io:format/2</c></seealso> - in STDLIB.</p> - - <note><p>A reasonable starting value for <c>Depth</c> is - <c>30</c>. We recommend to test crashing various processes in your - application, examine the logs from the crashes, and then - increase or decrease the value.</p></note> - </item> - <tag><c>logger_max_size = integer() | unlimited</c></tag> - <item> - <p>This parameter specifies a hard maximum size limit (number - of characters) each log event can have when printed by the - default logger formatter. If the resulting string after - formatting an event is bigger than this, it will be - truncated before printed to the handler's destination.</p> - </item> - <tag><c>logger_utc = boolean()</c></tag> - <item> - <p>If set to <c>true</c>, the default formatter will display - all dates in Universal Coordinated Time.</p> + <p>The default value is <c>false</c></p> + <note><p>This configuration option only effects the <c>default</c> + and <c>sasl</c> handler. Any other handlers are uneffected.</p></note> </item> <tag><c>global_groups = [GroupTuple]</c></tag> <item> @@ -572,9 +492,20 @@ MaxT = TickTime + TickTime / 4</code> variables are not set.</p> <taglist> <tag><c>error_logger</c></tag> - <item>Replaced by <c>logger_dest</c></item> + <item>Replaced by setting the type of the default + <seealso marker="logger_std_h#type"><c>logger_std_h</c></seealso> + to the same value. Example: + <code type="none"> +erl -kernel logger '[{handler,default,logger_std_h,#{logger_std_h=>#{type=>{file,"/tmp/erlang.log"}}}}]' + </code> + </item> <tag><c>error_logger_format_depth</c></tag> - <item>Replaced by <c>logger_format_depth</c></item> + <item>Replaced by setting the <seealso marker="logger_formatter#depth"><c>depth</c></seealso> + parameter of the default handlers formatter. Example: + <code type="none"> +erl -kernel logger '[{handler,default,logger_std_h,#{formatter=>{logger_formatter,#{legacy_header=>true,template=>[{logger_formatter,header},"\n",msg,"\n"],depth=>10}}}]' + </code> + </item> </taglist> <p>See <seealso marker="logger_chapter#compatibility">Backwards compatibility with error_logger</seealso> for more |