= Apache Access Log Analysis =

**Summary**: This is a small howto on how to analyze the amount of data requests for a webserver using the access log. \\
**Date**: Around 2017 \\
**Refactor**: 20 February 2025: Checked links and formatting. \\
{{tag>apache}}

= Location Access Log =

<code bash>
/var/log/apache2
</code>

= Preparing Access Logs =
If you need older logs as well, you'll need to unpack them. They are zipped using bzip. Uncompressing them is done like this:

<code bash>
bunzip2 access_log-20101226.bz2
</code>

= Analyzing The Log =

This is the command to get the requests per minute from the access log. The last sorts on the amount of requests per minute:
<code bash>
cat access_log | awk '{gsub("\\[",""); split($4,a,":");printf("%s:%s:%s %s\n",a[1],a[2],a[3] ,$1)}' | sort | uniq -c | sort -nk1,1
</code>