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+---
+title: Using GoAccess with Nginx to replace Google Analytics
+permalink: /using-goaccess-with-nginx-to-replace-google-analytics.html
+date: 2021-01-25T12:00:00+02:00
+layout: post
+type: post
+draft: false
+---
+
+## Introduction
+
+I know! You cannot simply replace Google Analytics with parsing access logs and
+displaying a couple of charts. But to be honest, I actually never used Google
+Analytics to the fullest extent and was usually interested in seeing page hits
+and which pages were visited most often.
+
+I recently moved my blog from Firebase to a VPS and also decided to remove
+Google Analytics tracking code from the site since its quite malicious and
+tracks users across other pages also and is creating a profile of a user, and
+I've had it. But I also need some insight of what is happening on a server and
+which content is being read the most etc.
+
+I have looked at many existing solutions like:
+
+- [Umami](https://umami.is/)
+- [Freshlytics](https://github.com/sheshbabu/freshlytics)
+- [Matomo](https://matomo.org/)
+
+But the more I looked at them the more I noticed that I am replacing one evil
+with another one. Don't get me wrong. Some of these solutions are absolutely
+fantastic but would require installation of databases and something like PHP or
+Node. And I was not ready to put those things on my fresh server. Also having
+Docker installed is out of the question.
+
+## Opting for log parsing
+
+So, I defaulted to parsing already existing logs and generating HTML reports
+from this data.
+
+I found this amazing software [GoAccess](https://goaccess.io/) which provides
+all the functionalities I need, and it's a single binary. Written in Go.
+
+GoAccess can be used in two different modes.
+
+![GoAccess Terminal](/assets/posts/goaccess/goaccess-dash-term.png){:loading="lazy"}
+
+*Running in a terminal*
+
+![GoAccess HTML](/assets/posts/goaccess/goaccess-dash-html.png){:loading="lazy"}
+
+*Running in a browser*
+
+I, however, need this to run in a browser. So, the second option is the way to
+go. The Idea is to periodically run cronjob and export this report into a folder
+that gets then server by Nginx behind a Basic authentication.
+
+## Getting Nginx ready
+
+I choose Ubuntu on [DigitalOcean](https://www.digitalocean.com/). First I
+installed [Nginx](https://nginx.org/en/), and
+[Letsencrypt](https://letsencrypt.org/getting-started/) certbot and all the
+necessary dependencies.
+
+```sh
+# log in as root user
+sudo su -
+
+# first let's update the system
+apt update && apt upgrade -y
+
+# let's install
+apt install nginx certbot python3-certbot-nginx apache2-utils
+```
+
+After all this is installed we can create a new configuration for a statistics.
+Stats will be available at `stats.domain.com`.
+
+```sh
+# creates directory where html will be hosted
+mkdir -p /var/www/html/stats.domain.com
+
+cp /etc/nginx/sites-available/default /etc/nginx/sites-available/stats.domain.com
+nano /etc/nginx/sites-available/stats.domain.com
+```
+
+```nginx
+server {
+  root /var/www/html/stats.domain.com;
+  server_name stats.domain.com;
+
+  index index.html;
+  location / {
+    try_files $uri $uri/ =404;
+  }
+}
+```
+
+Now we check if the configuration is ok. We can do this with `nginx -t`. If all
+is ok, we can restart Nginx with `service nginx restart`.
+
+After all that you should add A record for this domain that points to IP of a
+droplet.
+
+Before enabling SSL you should test if DNS records have propagated with `curl
+stats.domain.com`.
+
+Now, it's time to provision TLS certificate. To achieve this, you execute
+command `certbot --nginx`. Follow the wizard and when you are asked about
+redirection always choose 2 (always redirect to HTTPS).
+
+When this is done you can visit https://stats.domain.com and you should get 404
+not found error which is correct.
+
+## Getting GoAccess ready
+
+If you are using Debian like system GoAccess should be available in repository.
+Otherwise refer to the official website.
+
+```sh
+apt install goaccess
+```
+
+To enable Geo location we also need one additiona thing.
+
+```sh
+cd /var/www/html/stats.stats.com
+wget https://github.com/P3TERX/GeoLite.mmdb/raw/download/GeoLite2-City.mmdb
+```
+
+Now we create a shell script that will be executed every 10 minutes.
+
+```sh
+nano /var/www/html/stats.domain.com/generate-stats.sh
+```
+
+Contents of this file should look like this.
+
+```sh
+#!/bin/sh
+
+zcat -f /var/log/nginx/access.log* > /var/log/nginx/access-all.log
+
+goaccess \
+  --log-file=/var/log/nginx/access-all.log \
+  --log-format=COMBINED \
+  --exclude-ip=0.0.0.0 \
+  --geoip-database=/var/www/html/stats.domain.com/GeoLite2-City.mmdb \
+  --ignore-crawlers \
+  --real-os \
+  --output=/var/www/html/stats.domain.com/index.html
+
+rm /var/log/nginx/access-all.log
+```
+
+Because after a while nginx creates multiple files with access logs we use
+[`zcat`](https://linux.die.net/man/1/zcat) to extract Gziped contents and create
+a file that has all the access logs. After this file is used we delete it.
+
+If you want to exclude your home IP's result look at the `--exclude-ip` option
+in script and instead of `0.0.0.0` add your own home IP address. You can find
+your home IP by executing `curl ifconfig.me` from your local machine and NOT
+from the droplet.
+
+Test the script by executing `sh
+/var/www/html/stats.domain.com/generate-stats.sh` and then checking
+`https://stats.domain.com`. If you can see stats instead of 404 than you are
+set.
+
+It's time to add this script to cron with `cron -e`.
+
+```go
+*/10 * * * * sh /var/www/html/stats.domain.com/generate-stats.sh
+```
+
+## Securing with Basic authentication
+
+You probably don't want stats to be publicly available, so we should create a
+user and a password for Basic authentication.
+
+First we create a password for a user `stats` with `htpasswd -c /etc/nginx/.htpasswd stats`.
+
+Now we update config file with `nano
+/etc/nginx/sites-available/stats.domain.com`.  You probably noticed that the
+file looks a bit different from before. This is because `certbot` added
+additional rules for SSL.
+
+Your location portion the config file should now look like. You should add
+`auth_basic` and `auth_basic_user_file` lines to the file.
+
+```nginx
+location / {
+  try_files $uri $uri/ =404;
+  auth_basic "Private Property";
+  auth_basic_user_file /etc/nginx/.htpasswd;
+}
+```
+
+Test if config is still ok with `nginx -t` and if it is you can restart Nginx
+with `service nginx restart`.
+
+If you now visit `https://stats.domain.com` you should be prompted for username
+and password. If not, try reopening your browser.
+
+That is all. You now have analytics for your server that gets refreshed every 10
+minutes.