Apache2 Customlog Error Log
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necessary to get feedback about the activity and performance of apache access log location the server as well as any problems that may be occurring.
Apache Customlog
The Apache HTTP Server provides very comprehensive and flexible logging capabilities. This document describes how to apache error log format configure its logging capabilities, and how to understand what the logs contain. Overview Security Warning Error Log Per-module logging Access Log Log Rotation Piped Logs Virtual Hosts
Apache Access Log Format Response Time
Other Log Files See alsoComments Overview Related ModulesRelated Directivesmod_log_configmod_log_forensicmod_logiomod_cgi The Apache HTTP Server provides a variety of different mechanisms for logging everything that happens on your server, from the initial request, through the URL mapping process, to the final resolution of the connection, including any errors that may have occurred in apache access log example the process. In addition to this, third-party modules may provide logging capabilities, or inject entries into the existing log files, and applications such as CGI programs, or PHP scripts, or other handlers, may send messages to the server error log. In this document we discuss the logging modules that are a standard part of the http server. Security Warning Anyone who can write to the directory where Apache httpd is writing a log file can almost certainly gain access to the uid that the server is started as, which is normally root. Do NOT give people write access to the directory the logs are stored in without being aware of the consequences; see the security tips document for details. In addition, log files may contain information supplied directly by the client, without escaping. Therefore, it is possible for malicious clients to insert control-characters in the log files, so care must be taken in dealing with raw logs. Error Log Related Mo
Basics Access and Error Logs General Configuration Debian/Ubuntu/Linux Mint Configuration Redhat/Fedora/CentOS Configuration OpenSUSE Configuration Applicable Modules ↑ 0 Apache Logging Basics Log Files An
Apache Rotatelogs
Apache log is a record of the events that have occurred
Apache Log Rotation
on your Apache web server. Apache stores two kinds of logs: Access Log Contains information about requests apache loglevel coming in to the web server. This information can include what pages people are viewing, the success status of requests, and how long the request took to respond. https://httpd.apache.org/docs/2.4/logs.html It looks something like this: Apache 10.185.248.71 - - [09/Jan/2015:19:12:06 +0000] 808840 "GET /inventoryService/inventory/purchaseItem?userId=20253471&itemId=23434300 HTTP/1.1" 500 17 "-" "Apache-HttpClient/4.2.6 (java 1.5)" 1 10.185.248.71 - - [09/Jan/2015:19:12:06 +0000] 808840 "GET /inventoryService/inventory/purchaseItem?userId=20253471&itemId=23434300 HTTP/1.1" 500 17 "-" "Apache-HttpClient/4.2.6 (java 1.5)" Error Log Contains information about errors that the web server encountered when processing requests, such as when files https://www.loggly.com/ultimate-guide/apache-logging-basics/ are missing. It looks something like this: [Thu Mar 13 19:04:13 2014] [error] [client 50.0.134.125] File does not exist: /var/www/favicon.ico 1 [Thu Mar 13 19:04:13 2014] [error] [client 50.0.134.125] File does not exist: /var/www/favicon.ico Location Access and error log files are stored on individual web servers. The exact location of your Apache logs depends on your operating system: Debian/Ubuntu/Linux Mint Redhat/Fedora/CentOS Configuration OpenSUSE The following general default logging configuration directives are specified in absence of specific virtual host container configuration. Log Level Directive This specifies log message severity. Default is “warn.” LogLevel warn Table of Level Severities Severity Description Example emerg Emergencies — system is unusable “Child cannot open lock file. Exiting” alert Immediate action required “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 dum
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more http://serverfault.com/questions/267036/is-it-possible-to-create-custom-error-log-in-apache-2 about hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask https://raymii.org/s/snippets/Apache_access_and_error_log_to_syslog.html Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Is it possible to create Custom Error Log in Apache 2? up vote 8 down apache access vote favorite I'd like to prepend the vhost name in my ErrorLog and then pipe it into a program I wrote. Is it possible to write Custom Error log format as it is with Access log? logging httpd apache-2.2 errors share|improve this question edited May 6 '11 at 16:37 Hangin on in quiet desperation 88k9113199 asked May 6 '11 at 15:35 JohnT 55113 Depending on your setup, you can have an ErrorLog for each of your virtual apache access log hosts. It's not the same as a unified parsable logfile, but it's something. –muffinista May 6 '11 at 16:31 add a comment| 4 Answers 4 active oldest votes up vote 7 down vote For piping see the ErrorLog directive and Piped Logs official manual entries which explain it pretty well. Getting a custom error log format is more difficult. You can customize the access log easily with LogFormat but there is nothing built in for modifying the error log format. I did come across CGI::Carp which is a Perl module for outputting to the error log. Finally, there is always modifying the Apache source code directly depending on how badly you want this feature. share|improve this answer answered May 6 '11 at 16:27 uesp 2,9441911 add a comment| up vote 6 down vote In Apache 2.2 you cannot change the format of error_log easily - see http://httpd.apache.org/docs/2.2/logs.html#errorlog. Apache 2.4 adds this support. See http://httpd.apache.org/docs/2.4/logs.html#errorlog. share|improve this answer edited Sep 17 '12 at 14:35 Community♦ 1 answered Sep 13 '12 at 13:59 Yishai 6111 add a comment| up vote 4 down vote With Apache 2.4 you can use the ErrorLogFormat directive. Syntax: ErrorLogFormat [connection|request] format Simple example ErrorLogFormat "[%t] [%l] [pid %P] %F: %E: [client %a] %M" Example (default format for threaded MPMs) ErrorLogFormat "[%{u}t] [%-m:%l] [pid %P:tid %T] %7F: %E: [client\ %a] %M% ,\ referer\ %{Referer}i" Example (similar to the 2.2.x format) ErrorLogF
access/error log to syslog15-12-2013 | Remy van Elst Table of ContentsThis snippet shows you how to redirect the Apache access log to syslog using the Customlog statement, and the Error log to syslog via the ErrorLog statement. Using the double pipe prevents spawning a shell for every hit. Append the below line to a vhost to have everything logged to syslog. CustomLog "||/usr/bin/logger -t apache -i -p local5.notice" combine The error log can be appended to syslog using the following statement: ErrorLog syslog:local6 More info on the Errorlog: http://httpd.apache.org/docs/2.2/mod/core.html#errorlog More info on the Customlog module: http://httpd.apache.org/docs/2.2/mod/modlogconfig.html#customlog Tags: acces-log, apache, error-log, log, logging, syslog, Generated by ingsoc | Cluster Status | About