GoAccess

What is it?

GoAccess is an open source, real-time web log analyzer and interactive viewer that runs in a terminal on *nix systems or directly in your browser. Designed with system administrators, DevOps engineers, and security professionals in mind, it delivers fast, actionable HTTP statistics and visual server reports on the fly. GoAccess parses your web server logs in real time and presents the data directly in the terminal or via a live HTML dashboard, making it easy to monitor traffic, detect anomalies, and troubleshoot issues instantly.

More info at: https://goaccess.io.

Features

GoAccess parses the specified web log file and outputs the data to the X terminal. Features include:

• Completely Real Time

All panels and metrics are timed to be updated every 200 ms on the terminal output and every second on the HTML output.

• Minimal Configuration needed

You can just run it against your access log file, pick the log format and let GoAccess parse the access log and show you the stats.

• Track Application Response Time

Track the time taken to serve the request. Extremely useful if you want to track pages that are slowing down your site.

• WebSocket Authentication:

GoAccess offers enhanced WebSocket authentication, supporting local and external JWT verification, with secure token refresh capabilities and seamless integration with external authentication systems.

• Nearly All Web Log Formats

GoAccess allows any custom log format string. Predefined options include, Apache, Nginx, Amazon S3, Elastic Load Balancing, CloudFront, etc.

• Incremental Log Processing

Need data persistence? GoAccess has the ability to process logs incrementally through the on-disk persistence options.

• Only one dependency

GoAccess is written in C. To run it, you only need ncurses as a dependency. That's it. It even features its own Web Socket server — http://gwsocket.io/.

• Visitors

Determine the amount of hits, visitors, bandwidth, and metrics for slowest running requests by the hour, or date.

• Metrics per Virtual Host

Have multiple Virtual Hosts (Server Blocks)? It features a panel that displays which virtual host is consuming most of the web server resources.

• ASN (Autonomous System Number mapping)

Great for detecting malicious traffic patterns and block them accordingly.

• Color Scheme Customizable

Tailor GoAccess to suit your own color taste/schemes. Either through the terminal, or by simply applying the stylesheet on the HTML output.

• Support for Large Datasets

GoAccess features the ability to parse large logs due to its optimized in-memory hash tables. It has very good memory usage and pretty good performance. This storage has support for on-disk persistence as well.

• Docker Support

Ability to build GoAccess' Docker image from upstream. You can still fully configure it, by using Volume mapping and editing goaccess.conf. See Docker section below. There is also documentation how to use docker-compose.

Nearly all web log formats...

GoAccess allows any custom log format string. Predefined options include, but not limited to:

• Amazon CloudFront (Download Distribution).
• Amazon Simple Storage Service (S3)
• AWS Elastic Load Balancing
• Combined Log Format (XLF/ELF) Apache | Nginx
• Common Log Format (CLF) Apache
• Google Cloud Storage.
• Apache virtual hosts
• Squid Native Format.
• W3C format (IIS).
• Caddy's JSON Structured format.
• Traefik's CLF flavor

Why GoAccess?

GoAccess was designed to be a fast, terminal-based log analyzer. Its core idea is to quickly analyze and view web server statistics in real time without needing to use your browser (great if you want to do a quick analysis of your access log via SSH, or if you simply love working in the terminal).

It also serves as a practical tool for security monitoring, making it easy to spot suspicious activity, unusual traffic patterns, brute-force attempts, scanners, bots, and anomalous requests directly from your logs.

While the terminal output is the default output, it has the capability to generate a complete, self-contained, real-time HTML report, as well as a JSON, and CSV report.

You can see it more of a monitor command tool than anything else.

Installation

Build from release

GoAccess can be compiled and used on *nix systems.

Download, extract and compile GoAccess with:

$ wget https://tar.goaccess.io/goaccess-1.10.2.tar.gz
$ tar -xzvf goaccess-1.10.2.tar.gz
$ cd goaccess-1.10.2/
$ ./configure --enable-utf8 --enable-geoip=mmdb --with-zlib
$ make
# make install

Build from GitHub (Development)

$ git clone https://github.com/allinurl/goaccess.git
$ cd goaccess
$ autoreconf -fiv
$ ./configure --enable-utf8 --enable-geoip=mmdb
$ make
# make install

Distributions

It is easiest to install GoAccess on GNU+Linux using the preferred package manager of your GNU+Linux distribution. Please note that not all distributions will have the latest version of GoAccess available.

Debian/Ubuntu

# apt-get install goaccess

Note: It is likely this will install an outdated version of GoAccess. To make sure that you're running the latest stable version of GoAccess see alternative option below.

Official GoAccess Debian & Ubuntu repository

$ wget -O - https://deb.goaccess.io/gnugpg.key | gpg --dearmor | sudo tee /usr/share/keyrings/goaccess.gpg >/dev/null
$ echo "deb [signed-by=/usr/share/keyrings/goaccess.gpg arch=$(dpkg --print-architecture)] https://deb.goaccess.io/ $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/goaccess.list
$ sudo apt-get update
$ sudo apt-get install goaccess

Note: * .deb packages in the official repo are available through HTTPS as well. You may need to install apt-transport-https.

Fedora

# yum install goaccess

Arch

# pacman -S goaccess

Gentoo

# emerge net-analyzer/goaccess

OS X / Homebrew

# brew install goaccess

FreeBSD

# cd /usr/ports/sysutils/goaccess/ && make install clean
# pkg install sysutils/goaccess

OpenBSD

# cd /usr/ports/www/goaccess && make install clean
# pkg_add goaccess

openSUSE

# zypper ar -f obs://server:http http
# zypper in goaccess

OpenIndiana

# pkg install goaccess

pkgsrc (NetBSD, Solaris, SmartOS, ...)

# pkgin install goaccess

Windows

GoAccess can be used in Windows through Cygwin. See Cygwin's packages. Or through the GNU+Linux Subsystem on Windows 10.

Docker

A Docker image has been updated, capable of directing output from an access log. If you only want to output a report, you can pipe a log from the external environment to a Docker-based process:

touch report.html
cat access.log | docker run --rm -i -v ./report.html:/report.html -e LANG=$LANG allinurl/goaccess -a -o report.html --log-format COMBINED -

OR real-time

tail -F access.log | docker run -p 7890:7890 --rm -i -e LANG=$LANG allinurl/goaccess -a -o report.html --log-format COMBINED --real-time-html -

There is also documentation how to use docker-compose.

Build in isolated container

You can also build the binary for Debian based systems in an isolated container environment to prevent cluttering your local system with the development libraries:

$ curl -L "https://github.com/allinurl/goaccess/archive/refs/heads/master.tar.gz" | tar -xz && cd goaccess-master
$ docker build -t goaccess/build.debian-12 -f Dockerfile.debian-12 .
$ docker run -i --rm -v $PWD:/goaccess goaccess/build.debian-12 > goaccess

You can read more about using the docker image in DOCKER.md.

Distribution Packages

GoAccess has minimal requirements, it's written in C and requires only ncurses. However, below is a table of some optional dependencies in some distros to build GoAccess from source.

Distro	NCurses	GeoIP (opt)	GeoIP2 (opt)	OpenSSL (opt)
Ubuntu/Debian	libncurses-dev	libgeoip-dev	libmaxminddb-dev	libssl-dev
RHEL/CentOS	ncurses-devel	geoip-devel	libmaxminddb-devel	openssl-devel
Arch	ncurses	geoip	libmaxminddb	openssl
Gentoo	sys-libs/ncurses	dev-libs/geoip	dev-libs/libmaxminddb	dev-libs/openssl
Slackware	ncurses	GeoIP	libmaxminddb	openssl

Note: You may need to install build tools like gcc, autoconf, gettext, autopoint etc. for compiling/building software from source. e.g., base-devel, build-essential, "Development Tools".

Storage

Default Hash Tables

In-memory storage provides better performance at the cost of limiting the dataset size to the amount of available physical memory. GoAccess uses in-memory hash tables. It has very good memory usage and pretty good performance. This storage has support for on-disk persistence as well.

Command Line / Config Options

See options that can be supplied to the command or specified in the configuration file. If specified in the configuration file, long options need to be used without prepending --.

Usage / Examples

Note: Piping data into GoAccess won't prompt a log/date/time configuration dialog, you will need to previously define it in your configuration file or in the command line.

Getting Started

To output to a terminal and generate an interactive report:

# goaccess access.log

To generate an HTML report:

# goaccess access.log -a > report.html

To generate a JSON report file:

# goaccess access.log -a -d -o report.json

To generate a CSV report to stdout:

# goaccess access.log --no-csv-summary -o csv

GoAccess also allows great flexibility for real-time filtering and parsing. For instance, to quickly diagnose issues by monitoring logs since goaccess was started:

# tail -f access.log | goaccess -

And even better, to filter while maintaining opened a pipe to preserve real-time analysis, we can make use of tail -f and a matching pattern tool such as grep, awk, sed, etc.:

# tail -f access.log | grep -i --line-buffered 'firefox' | goaccess --log-format=COMBINED -

or to parse from the beginning of the file while maintaining the pipe opened and applying a filter

# tail -f -n +0 access.log | grep -i --line-buffered 'firefox' | goaccess -o report.html --real-time-html -

Multiple Log files

There are several ways to parse multiple logs with GoAccess. The simplest is to pass multiple log files to the command line:

# goaccess access.log access.log.1

It's even possible to parse files from a pipe while reading regular files:

# cat access.log.2 | goaccess access.log access.log.1 -

Note: the single dash is appended to the command line to let GoAccess know that it should read from the pipe.

Now if we want to add more flexibility to GoAccess, we can use zcat --force to read compressed and uncompressed files. For instance, if we would like to process all log files access.log*, we can do:

# zcat --force access.log* | goaccess -

Note: On Mac OS X, use gunzip -c instead of zcat.

Multi-thread Support

Use --jobs=<count> (or -j) to enable multi-thread parsing. For example:

# goaccess access.log -o report.html -j 4

And use --chunk-size=<256-32768> to adjust chunk size, the default chunk size is 1024. For example:

# goaccess access.log -o report.html -j 4 --chunk-size=8192

Real-time HTML outputs

GoAccess has the ability the output real-time data in the HTML report. You can even email the HTML file since it is composed of a single file with no external file dependencies, how neat is that!

The process of generating a real-time HTML report is very similar to the process of creating a static report. Only --real-time-html is needed to make it real-time.

# goaccess access.log -o /usr/share/nginx/html/your_site/report.html --real-time-html

To view the report you can navigate to http://your_site/report.html.

By default, GoAccess will use the host name of the generated report. Optionally, you can specify the URL to which the client's browser will connect to. See FAQ for a more detailed example.

# goaccess access.log -o report.html --real-time-html --ws-url=goaccess.io

By default, GoAccess listens on port 7890, to use a