Apache 404 Error Log
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Apache Logs Are There Too Many Errors? What is Causing 404s? Site Loading Too Slowly? Too Much Load From One Source? Unusual Traffic Patterns? ↑ 0 Troubleshoot with Apache Logs Here are common questions people want to answer using the Apache logs: Are There Too Many Errors? What’s Causing 404s? Problems With
Apache Not Logging 404 Errors
A Browser or User Agent? Site Loading Too Slowly? Too Much Load From One Source? Unusual apache tomcat 404 error Traffic Patterns? Are There Too Many Errors? Apache logs have errors from two sources: the error log and error status codes in the access log. apache 404 error page HTTP status codes that are errors are 400 or above (see the overview in the What To Log In Apache section). Most often people want to see the count of errors, especially in proportion to the overall traffic. If the proportion
Apache 404 Error On A File That Exists
of errors is too high, you know that something is wrong. First, you have to centralize the logs from all relevant hosts. Then if you are using Unix tools, you can run this type of command to parse out the status code, count them, and then sort them descending by count. $ cat access.log | cut -d ' ' -f 9 | sort | uniq -c | sort -nr 941 200 292 500 290 404 50 401 20 400 123456 $ cat access.log
Apache 404 Error But File Exists
| cut -d ' ' -f 9 | sort | uniq -c | sort -nr 941 200 292 500 290 404 50 401 20 400 Log management systems can give you these counts in a single click so you dont have to worry about parsing and counting them yourself. Instead of the above work, it should give you get quick summaries and visualizations of the error counts in many different formats such as table or pie chart. These screenshots were generated from Loggly's trend view. Here you can quickly see 40% of responses are 400 or higher, which is too many errors. What is Causing 404s? A 404 error is defined as a missing file or resource. Looking at the request URI will tell you which one it is. You can then check your deployment to make sure a file hasn’t accidentally been deleted or removed. If it has, you can add it back in and redeploy the site. If you're using unix command line tools, you can use grep to find the 404s, then cut to extract the URL, then uniq and sort to summarize the list. $ grep " 404 " access.log | cut -d ' ' -f 7 | sort | uniq -c | sort -nr 17 /manager/html 3 /robots.txt 3 /phpMyAdmin/scripts/setup.php 3 //myadmin/scripts/setup.php 3 /favicon.ico 123456 $ grep " 404 " access.log | cut -d ' ' -f 7 | sort | uniq -c | sort -nr 17 /manager/html3 /robots.txt3 /phpMyAdmin/scripts/setup.php3 //myadmin/scripts/setup.php3 /favic
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Apache Set 404 Page
or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and apache 403 error 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 https://www.loggly.com/ultimate-guide/troubleshoot-with-apache-logs/ and rise to the top How can I prevent Apache from logging 404 errors? up vote 4 down vote favorite 2 So, whenever a user tries to fetch a file on my Apache server that doesn't exist I get a 404 line in the Access log: [29/Sep/2010:12:14:45 +0200] "GET /asdf HTTP/1.1" 404 And I also get this in the Error log: [Wed Sep 29 12:14:45 2010] [error] [client] http://serverfault.com/questions/185747/how-can-i-prevent-apache-from-logging-404-errors File does not exist: /www/site/asdf Is there a way to suppress 404 erros from showing up in the error log- only in the access log? apache-2.2 http-status-code-404 logging share|improve this question edited Nov 8 '11 at 18:56 cwd 1,13672137 asked Sep 29 '10 at 10:23 Sandman 2041211 add a comment| 4 Answers 4 active oldest votes up vote 1 down vote ErrogLog(http://httpd.apache.org/docs/2.2/mod/core.html#errorlog) have not conditional. You can send the logs to syslog or script and filter it. share|improve this answer answered Sep 29 '10 at 10:31 bindbn 3,91721622 add a comment| up vote 0 down vote Yes, you can suppress them from the error log, but still have them in the access log. Just add these lines to .htaccess: # Don't log missing files RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(content\asdf)$ - [R=404,L] It uses mod_rewrite. RewriteCond is there to make sure that file indeed doesn't exist. Files that do exist will be served as usual. R=404 says to send 404 Not Found status code when client accesses any files that contain "asdf". You need to modify the expression in parenthesis, on the last line, to suit your needs. This answer is also found here. share|improve this answer answered Jun 4 '14 at
giving 404 errors on your apache2 setup. Set this up as a shell alias to get easy http://mfitzp.io/article/find-top-404-error-pages-apache/ access at anytime. This one liner breaks down asfollows: cut splits the input (the logfile) by -d delimiter and returning only the fields given by`-f" https://httpd.apache.org/docs/2.4/custom-error.html Output is piped into awk which searches for lines where field 4 = 404, returning these as a line containing 404 URL These are then 404 error sorted (so duplicates can be counted) with sort uniq -c counts the duplicates chucks them away and appends a number to the beginning of each row that isleft The resulting output is then sorted numerically -g and -r reverse (highest first - remove this to get the top ones at apache 404 error the bottom of thelist) Method From the Linux command lineenter: cut -d'"' -f2,3 /var/log/apache/access.log | awk '$4=404{print $4" "$2}' | sort | uniq -c | sort -rg Substitute the path /var/log/apache/access.log for the path to your own apache setup. On web hosts this may be under `~/logs/apache' orelsewhere. This method is based, with permission, on an original protocol available here. Find top 404 Error pages(Apache) was published in web dev on November 07, 2011 and tagged shell, apache, 404, logs, apache2, web-dev, computing Enjoy this? Follow me for more of the same in your Inbox. Follow Related posts Django ThreadedComments Syntax highlighting with Django andMarkdown Display external RSS feeds on your WordPressblog Debug GNOMEShell Use screen to manage persistentsessions ©2016 Martin Fitzpatrick. Licensed GPLv3 & BSD. Powered by Pelican using heavily modified Minimal Mistakes theme. Please enable JavaScript to view the comments powered by Disqus. comments powered by Disqus
generic error responses in the event of 4xx or 5xx HTTP status codes, these responses are rather stark, uninformative, and can be intimidating to site users. You may wish to provide custom error responses which are either friendlier, or in some language other than English, or perhaps which are styled more in line with your site layout. Customized error responses can be defined for any HTTP status code designated as an error condition - that is, any 4xx or 5xx status. Additionally, a set of values are provided, so that the error document can be customized further based on the values of these variables, using Server Side Includes. Or, you can have error conditions handled by a cgi program, or other dynamic handler (PHP, mod_perl, etc) which makes use of these variables. Configuration Available Variables Customizing Error Responses Multi Language Custom Error Documents See alsoComments Configuration Custom error documents are configured using the ErrorDocument directive, which may be used in global, virtualhost, or directory context. It may be used in .htaccess files if AllowOverride is set to FileInfo. ErrorDocument 500 "Sorry, our script crashed. Oh dear" ErrorDocument 500 /cgi-bin/crash-recover ErrorDocument 500 http://error.example.com/server_error.html ErrorDocument 404 /errors/not_found.html ErrorDocument 401 /subscription/how_to_subscribe.html The syntax of the ErrorDocument directive is: ErrorDocument <3-digit-code>
REDIRECT_HTTP_USER_AGENT=Mozilla/5.0 Fedor