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Special Forums IP Networking Proxy Server Httpd proxy on AIX: failed to connect SSL Post 303042275 by Neo on Friday 20th of December 2019 04:10:01 AM
Code:
Description:	Controls the verbosity of the ErrorLog
Syntax:	LogLevel [module:]level [module:level] ...
Default:	LogLevel warn
Context:	server config, virtual host, directory
Status:	Core
Module:	core
Compatibility:	Per-module and per-directory configuration is available in Apache HTTP Server 2.3.6 and later
LogLevel adjusts the verbosity of the messages recorded in the error logs (see ErrorLog directive). 

The following levels are available, in order of decreasing significance:

Level	Description	Example
emerg	Emergencies - system is unusable.	"Child cannot open lock file. Exiting"
alert	Action must be taken immediately.	"getpwuid: couldn't determine user name from uid"
crit	Critical Conditions.	"socket: Failed to get a socket, exiting child"
error	Error conditions.	"Premature end of script headers"
warn	Warning conditions.	"child process 1234 did not exit, sending another SIGHUP"
notice	Normal but significant condition.	"httpd: caught SIGBUS, attempting to dump core in ..."
info	Informational.	"Server seems busy, (you may need to increase StartServers, or Min/MaxSpareServers)..."
debug	Debug-level messages	"Opening config file ..."
trace1	Trace messages	"proxy: FTP: control connection complete"
trace2	Trace messages	"proxy: CONNECT: sending the CONNECT request to the remote proxy"
trace3	Trace messages	"openssl: Handshake: start"
trace4	Trace messages	"read from buffered SSL brigade, mode 0, 17 bytes"
trace5	Trace messages	"map lookup FAILED: map=rewritemap key=keyname"
trace6	Trace messages	"cache lookup FAILED, forcing new map lookup"
trace7	Trace messages, dumping large amounts of data	"| 0000: 02 23 44 30 13 40 ac 34 df 3d bf 9a 19 49 39 15 |"
trace8	Trace messages, dumping large amounts of data	"| 0000: 02 23 44 30 13 40 ac 34 df 3d bf 9a 19 49 39 15 |"
When a particular level is specified, messages from all other levels of higher significance will be reported as well. 

E.g., when LogLevel info is specified, then messages with log levels of notice and warn will also be posted.

Using a level of at least crit is recommended.

For example:

LogLevel notice
Note
When logging to a regular file, messages of the level notice cannot be suppressed and thus are always logged. However, this doesn't apply when logging is done using syslog.

Specifying a level without a module name will reset the level for all modules to that level. 

Specifying a level with a module name will set the level for that module only. 

It is possible to use the module source file name, the module identifier, or the module identifier with the trailing _module omitted as module specification. 

This means the following three specifications are equivalent:

LogLevel info ssl:warn
LogLevel info mod_ssl.c:warn
LogLevel info ssl_module:warn
It is also possible to change the level per directory:

LogLevel info
<Directory "/usr/local/apache/htdocs/app">
  LogLevel debug
</Directory>
Per directory loglevel configuration only affects messages that are logged after the request has been parsed and that are associated

Reference:

Controls the verbosity of the ErrorLog - Apache HTTP Server Version 2.4
 
Test Your Knowledge in Computers #165
Difficulty: Easy
Tanenbaum originally developed MINIX for compatibility with Apple Computers.
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HTTPD(8)							       httpd								  HTTPD(8)

NAME
httpd - Apache Hypertext Transfer Protocol Server SYNOPSIS
httpd [ -d serverroot ] [ -f config ] [ -C directive ] [ -c directive ] [ -D parameter ] [ -e level ] [ -E file ] [ -k start|restart|grace- ful|stop|graceful-stop ] [ -R directory ] [ -h ] [ -l ] [ -L ] [ -S ] [ -t ] [ -v ] [ -V ] [ -X ] [ -M ] [ -T ] On Windows systems, the following additional arguments are available: httpd [ -k install|config|uninstall ] [ -n name ] [ -w ] SUMMARY
httpd is the Apache HyperText Transfer Protocol (HTTP) server program. It is designed to be run as a standalone daemon process. When used like this it will create a pool of child processes or threads to handle requests. In general, httpd should not be invoked directly, but rather should be invoked via apachectl on Unix-based systems or as a service on Win- dows NT, 2000 and XP and as a console application on Windows 9x and ME. OPTIONS
-d serverroot Set the initial value for the ServerRoot directive to serverroot. This can be overridden by the ServerRoot directive in the configu- ration file. The default is /etc/httpd. -f config Uses the directives in the file config on startup. If config does not begin with a /, then it is taken to be a path relative to the ServerRoot. The default is conf/httpd.conf. -k start|restart|graceful|stop|graceful-stop Signals httpd to start, restart, or stop. See Stopping Apache httpd for more information. -C directive Process the configuration directive before reading config files. -c directive Process the configuration directive after reading config files. -D parameter Sets a configuration parameter which can be used with <IfDefine> sections in the configuration files to conditionally skip or process commands at server startup and restart. Also can be used to set certain less-common startup parameters including -DNO_DETACH (prevent the parent from forking) and -DFOREGROUND (prevent the parent from calling setsid() et al). -e level Sets the LogLevel to level during server startup. This is useful for temporarily increasing the verbosity of the error messages to find problems during startup. -E file Send error messages during server startup to file. -h Output a short summary of available command line options. -l Output a list of modules compiled into the server. This will not list dynamically loaded modules included using the LoadModule directive. -L Output a list of directives provided by static modules, together with expected arguments and places where the directive is valid. Directives provided by shared modules are not listed. -M Dump a list of loaded Static and Shared Modules. -S Show the settings as parsed from the config file (currently only shows the virtualhost settings). -T (Available in 2.3.8 and later) Skip document root check at startup/restart. -t Run syntax tests for configuration files only. The program immediately exits after these syntax parsing tests with either a return code of 0 (Syntax OK) or return code not equal to 0 (Syntax Error). If -D DUMP_VHOSTS is also set, details of the virtual host con- figuration will be printed. If -D DUMP_MODULES is set, all loaded modules will be printed. -v Print the version of httpd, and then exit. -V Print the version and build parameters of httpd, and then exit. -X Run httpd in debug mode. Only one worker will be started and the server will not detach from the console. The following arguments are available only on the Windows platform: -k install|config|uninstall Install Apache httpd as a Windows NT service; change startup options for the Apache httpd service; and uninstall the Apache httpd service. -n name The name of the Apache httpd service to signal. -w Keep the console window open on error so that the error message can be read. Apache HTTP Server 2012-02-10 HTTPD(8)

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