Apache2 Custom Error Log
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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 about hiring apache2 error log format developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ apache2 error log path 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 where is apache2 error log ubuntu 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 vote favorite I'd like
Apache2 Error Log Location
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 hosts. It's not the same as ubuntu apache2 error log file location 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) ErrorLogFormat "[%t] [%l] %7F: %E: [client\ %a] %M% ,\ referer\ %{Referer}i" Advanced example
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Log Rotation In Apache On An Ubuntu VPS Posted Aug 19, 2013 199k views Apache Logging Server Optimization Ubuntu Introduction The Apache web server can be configured to give the server administrator important information http://serverfault.com/questions/267036/is-it-possible-to-create-custom-error-log-in-apache-2 about how it is functioning and what issues, if any, need to be addressed. The main avenue for providing feedback to the administrator is through the use of log files. Apache has a very configurable logging mechanism that can be used to output messages to different places based on instructions. In this guide, we will look at how to utilize Apache's logging functionality to set up structured, https://www.digitalocean.com/community/tutorials/how-to-configure-logging-and-log-rotation-in-apache-on-an-ubuntu-vps easy-to-parse logs. We will be using a default Apache2 installation on an Ubuntu 12.04 VPS. Other distributions should operate in a similar fashion. Apache Log Levels Apache separates all informational messages into categories depending on how important it considers the information. For instance, for the most important messages, considered emergencies, Apache designates the log level as "emerg". The "info" tag, on the other hand, just shows helpful information that can be useful to look at occasionally. Here are the log levels that Apache recognizes, from most important to least: emerg: Emergency situations where the system is in an unusable state. alert: Severe situation where action is needed promptly. crit: Important problems that need to be addressed. error: An Error has occurred. Something was unsuccessful. warn: Something out of the ordinary happened, but not a cause for concern. notice: Something normal, but worth noting has happened. info: An informational message that might be nice to know. debug: Debugging information that can be useful to pinpoint where a problem is occurring. trace[1-8]: Tracing information of various levels of verbosity that produces a large amount of information. When you specify a log level, you are not choosing to log the messages labeled in th
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 https://www.loggly.com/ultimate-guide/apache-logging-basics/ Apache log is a record of the events that have occurred https://www.sitepoint.com/configuring-web-logs-apache/ on your Apache web server. Apache stores two kinds of logs: Access Log Contains information about requests 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 error log respond. 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 apache2 error log 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
Web Dev @ Microsoft SEO By WooRank Books Courses Screencasts Newsletters Versioning Shop Forums Advertise Contribute Contact Us Our Story 995kSubscribers 132kFollowers 80kFollowers Programming Article Configure Web Logs in Apache By Blane Warrene February 23, 2004 One of the many pieces of the Website puzzle is Web logs. Traffic analysis is central to most Websites, and the key to getting the most out of your traffic analysis revolves around how you configure your Web logs. Apache is one of the most -- if not the most -- powerful open source solutions for Website operations. You will find that Apache's Web logging features are flexible for the single Website or for managing numerous domains requiring Web log analysis. Author's Note: While most of this piece discusses configuration options for any operating system Apache supports, some of the content will be Unix/Linux (*nix) specific, which now includes Macintosh OS X and its underlying Unix kernel. For the single site, Apache is pretty much configured for logging in the default install. The initial httpd.conf file (found in /etc/httpd/conf/httpd.conf in most cases) should have a section on logs that looks similar to this (Apache 2.0.x), with descriptive comments for each item. Your default logs folder will be found in /etc/httpd/logs. This location can be changed when dealing with multiple Websites, as we'll see later. For now, let's review this section of log configuration. ErrorLog logs/error_log
LogLevel warn
LogFormat "%h %l %u %t "%r" %>s %b "%{Referer}i" "%{User-Agent}i"" combined
LogFormat "%h %l %u %t "%r" %>s %b" common
LogFormat "%{Referer}i -> %U" referer
LogFormat "%{User-agent}i" agent
CustomLog logs/access_log combined