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Apache Log live replicator

Project description

Apache Replay is a command line tool that reads Apache log files and replays it on a remote server in real time. It’s goal it’s to load test HTTP/HTTPS servers with the same traffic that is received on another server.

This tool is written in Python and it uses apache-log-parser, requests and gevent libraries.

Main Features

  • Real time replay load testing

  • Accept any Apache log format

  • Support Basic Authentication

  • URL match and ignore filters


On Linux, first install python development and libevent packages using system package manager:

# Debian-based distributions (eg Ubuntu, ...):
$ sudo apt-get install python-dev libevent-dev

# RPM-based distributions:
$ yum install python-devel libevent-*

Then it can be installed from PyPi using pip :

$ pip install areplay

Basic usage

$ areplay /var/log/apache2/access.log


$ areplay --help

usage: areplay [-h] [-v] [-a AUTH] [-w WORKERS] [-m MATCH] [-i IGNORE]
               [-d] [-f FORMAT] [-sv] [-iu IGNORE_URL]
               server log_file

 positional arguments:

  server                      Remote Server
  log_file                    Apache log file path

 optional arguments:

   -h, --help                           Show this help message and exit
   -v, --version                        Show program's version number and exit
   -a AUTH, --auth AUTH                 Basic authentication user:password
   -w NUM, --workers NUM                Workers pool size
   -d, --dry-run                        Only prints URLs
   -f FORMAT, --format FORMAT           Apache log format
   -i IGNORE, --ignore IGNORE           Ignore matching requests
   -iu URL, --ignore-url URL            URL to hit when URL from log is ignored
   -m MATCH, --match MATCH              Only process matching requests
   -sv, --skip-verify                   Skip SSL certificate verify


Basic auth:

$ areplay -a username:password access.log

URL filtering - ignore js and css - use | (pipe) to separate keywords:

$ areplay -i '.css|.js' access.log

URL filtering - process only js and css - use | (pipe) to separate keywords:

$ areplay -m '.css|.js' access.log

Custom Apache Log format - get LogFormat for Apache configuration file:

$ cat /etc/apache2/apache2.conf | grep LogFormat | grep combined
LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" combined

$ areplay -f "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" access.log

Change Log

Please see CHANGELOG.


Please see LICENSE.


Thank you to the people from Boom! for inspiration and Dinko Korunic for snippet (GeventTail).

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