How to Install MyBB Forum with Nginx and Let’s Encrypt on Debian 10

mybb welcome

How to Install MyBB Forum with Nginx and Let’s Encrypt on Debian 10

MyBB is a free and open-source, intuitive and extensible forum program. MyBB is simple to use and extendible with hundreds of plugins and themes that make adding new features or new look easy. 

MyBB source code is hosted on GitHub. This tutorial will show you how to install MyBB forum software on Debian 10 (buster) system.


MyBB 1.8 and the Merge System 1.8 have a few minimum system requirements:

  • PHP, at least version 5.2. PHP 7.3 highly recommended.
  • MySQL version 5.0 or greater, PostgreSQL version 8.1 or greater, or SQLite version 3 or greater. PostgreSQL 10.0 or MySQL 8.0 are highly recommended.
  • Apache, Nginx, Lighttpd or IIS webserver
  • The following PHP extensions are also needed:
  • SimpleXML
  • mbstring
  • gd
  • The respective vendor-specific database PHP extension

NOTE: Replace all instances of example.com with your domain name.


  • A Debian 10 (buster) operating system.
  • A non-root user with sudo privileges.

Initial steps

Check your Debian version:
lsb_release -ds
# Debian GNU/Linux 10 (buster)

Set up the timezone:
sudo dpkg-reconfigure tzdata

Update your operating system packages (software). That is an essential first step because it ensures you have the latest updates and security fixes for your operating system’s default software packages:
sudo apt update && sudo apt upgrade -y

Install some essential packages that are necessary for basic administration of the Debian operating system:
sudo apt install -y curl wget vim git unzip socat bash-completion apt-transport-https

Step 1 – Install PHP and required PHP extensions

Install PHP, as well as the required PHP extensions:
sudo apt install -y php php-cli php-fpm php-gd php-mbstring php-xml php-mysql php-pgsql

To show PHP compiled in modules, you can run:
php -m

. . .
. . .

Check the version:
php --version

# PHP 7.3.9-1~deb10u1 (cli) (built: Sep 18 2019 10:33:23) ( NTS )
# Copyright (c) 1997-2018 The PHP Group
# Zend Engine v3.3.9, Copyright (c) 1998-2018 Zend Technologies
# with Zend OPcache v7.3.4-2, Copyright (c) 1999-2018, by Zend Technologies

PHP-FPM service is automatically started and enabled on reboot on the Debian 10 system, so there is no need to start and enable it manually. We can move on to the next step.

Step 2 – Install acme.sh client and obtain Let’s Encrypt certificate ( optional )

Securing your forum with HTTPS is not necessary, but it is a good practice to secure your site traffic. To obtain a TLS certificate from Let’s Encrypt we will use acme.sh client. Acme.sh is a simple UNIX shell software for obtaining TLS certificates from Let’s Encrypt with zero dependencies.

Download and install acme.sh:
sudo su - root
git clone https://github.com/Neilpang/acme.sh.git
cd acme.sh
./acme.sh --install --accountemail [email protected]
source ~/.bashrc
cd ~

Check acme.sh version:
acme.sh --version
# v2.8.2

Obtain RSA and ECC/ECDSA certificates for your domain/hostname:

# RSA 2048
acme.sh --issue --standalone -d example.com --keylength 2048
acme.sh --issue --standalone -d example.com --keylength ec-256

If you want fake certificates for testing, you can add --staging flag to the above commands.

After running the above commands, your certificates and keys will be in:

  • For RSA: /home/username/example.com directory.
  • For ECC/ECDSA: /home/username/example.com_ecc directory.

To list your issued certs you can run:
acme.sh --list

Create a directory to store your certs. We will use the /etc/letsencrypt directory.
mkdir -p /etc/letsecnrypt/example.com
sudo mkdir -p /etc/letsencrypt/example.com_ecc

Install/copy certificates to /etc/letsencrypt directory.
acme.sh --install-cert -d example.com --cert-file /etc/letsencrypt/example.com/cert.pem --key-file /etc/letsencrypt/example.com/private.key --fullchain-file /etc/letsencrypt/example.com/fullchain.pem --reloadcmd "sudo systemctl reload nginx.service"
acme.sh --install-cert -d example.com --ecc --cert-file /etc/letsencrypt/example.com_ecc/cert.pem --key-file /etc/letsencrypt/example.com_ecc/private.key --fullchain-file /etc/letsencrypt/example.com_ecc/fullchain.pem --reloadcmd "sudo systemctl reload nginx.service"

All the certificates will be automatically renewed every 60 days.

After obtaining certs exit from root user and return to regular sudo user:

Step 3 – Install MariaDB and create a database for MyBB

Install MariaDB database server:
sudo apt install -y mariadb-server

Check the MariaDB version:
mysql --version
# mysql  Ver 15.1 Distrib 10.3.17-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2

Run mysql_secure installation script to improve MariaDB security and set the password for MariaDB root user:
sudo mysql_secure_installation

Answer each of the questions:
Would you like to setup VALIDATE PASSWORD plugin? N
New password: your_secure_password
Re-enter new password: your_secure_password
Remove anonymous users? [Y/n] Y
Disallow root login remotely? [Y/n] Y
Remove test database and access to it? [Y/n] Y
Reload privilege tables now? [Y/n] Y

Connect to MariaDB shell as the root user:
sudo mysql -u root -p
# Enter password

Create an empty MariaDB database and user for MyBB forum and remember the credentials:
mariadb> CREATE DATABASE dbname;
mariadb> GRANT ALL ON dbname.* TO 'username' IDENTIFIED BY 'password';

Exit from MariaDB:
mariadb> exit

Replace dbname, username and password with your own names.

Step 4 – Install and configure Nginx

Download and install NGINX from the Debian repository:
sudo apt install -y nginx

Check the NGINX version:
sudo nginx -v
# nginx version: nginx/1.14.2

Configure Nginx. Run sudo vim /etc/nginx/sites-available/mybb.conf and populate the file with the following.
server {

listen 80;
listen 443 ssl;

ssl_certificate /etc/letsencrypt/example.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/example.com/private.key;
ssl_certificate /etc/letsencrypt/example.com_ecc/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/example.com_ecc/private.key;
server_name forum.example.com;

root /var/www/mybb;

location / {
index index.php;

# Deny access to internal files.
location ~ /(inc|uploads/avatars) {
deny all;

location ~ .php$ {
fastcgi_pass unix:/run/php/php7.3-fpm.sock;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;


Activate the new mybb.conf configuration by linking the file to the sites-enabled directory:
sudo ln -s /etc/nginx/sites-available/mybb.conf /etc/nginx/sites-enabled/

Check NGINX configuration for syntax errors:
sudo nginx -t

Reload Nginx:
sudo systemctl reload nginx.service

Step 5 – Install MyBB

Create a document root directory:
sudo mkdir -p /var/www/mybb

Download the latest release of MyBB and unzip it:
cd /var/www/mybb
sudo wget https://resources.mybb.com/downloads/mybb_1821.zip
sudo unzip mybb_1821.zip
sudo mv /var/www/mybb/Upload/* /var/www/mybb

Remove the downloaded .zip file:
sudo rm mybb_1821.zip
sudo rmdir Upload

Change ownership of the /var/www/mybb directory to www-data:
sudo chown -R www-data:www-data /var/www/mybb

As the last step, open your domain and follow the installation wizard for MyBB. To access the installer you must navigate to the /install directory of your site in your web browser. For example, if your domain is example.com and you uploaded your MyBB files to the root directory then navigate to http://example.com/install. To access MyBB admin, append /admin to your site URL. You have successfully installed your MyBB.

After the installation, you should remove the /install directory from your server to prevent anyone else from running the installation again.
sudo rm -rf /var/www/mybb/install/

Step 6 – Complete the MyBB setup

To access the installer you must navigate to the install/ directory of your site in your web browser.

After opening the MyBB installation wizard you should be presented with a page like this. All you need to do is click “Next” on this page:

MyBB Installation Wizard

Check the MyBB license and click “Next”:

MyBB License

This page checks that your server meets the requirements for running MyBB. If it does not, you will be notified on this page. If everything is working correctly, all you need to do is click on the “Next” button on this page.

Check Requirements

This page is for the configuration of your database. Enter the requested database details and click “Next”.

Database configuration

In this step, the database tables are inserted. No user input is needed on this page, so click the “Next” button when it appears.

Creating database tables

In this step, the default data is inserted into the database tables created above. Click “Next”.

Populate tables

The theme data is loaded into the forum in this step. No user input is necessary on this page. Click the “Next” button when it appears.

Add Theme

Next, configure basic settings like forum name, URL, etc:

Basic Board configuration

Create a MyBB administrator account. This account has permissions to all sections in the Admin Control Panel.

Create administrator account

After the creation of the admin account, you will see the “Finish Setup” page. That page shows that installation is completed:

Finish the setup

To access admin interface append /admin to your URL:

MyBB Login

MyBB admin will look something like this:

MyBB Forum

And here is the screenshot of MyBB frontend:

MyBB frontend

Congratulations! You have successfully installed your MyBB.


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