Configure Nginx for WordPress on Ubuntu

sudo mkdir -p /var/www/html/wordpress

Navigate to /etc/nginx/sites-available. There, create a file with the name example.com. The name should be the same as your domain.

# Redirect HTTP -> HTTPS
server {
    listen 80;
    server_name www.example.com example.com;

    return 301 https://example.com$request_uri;
}

# Redirect WWW -> NON-WWW
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name www.example.com;

    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
    ssl_trusted_certificate /etc/letsencrypt/live/example.com/chain.pem;

    return 301 https://example.com$request_uri;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name example.com;

    root /var/www/html/wordpress;
    index index.php;

    # SSL parameters
    ssl_protocols         TLSv1.2 TLSv1.3;
    ssl_ciphers           HIGH:!aNULL:!MD5;
    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
    ssl_trusted_certificate /etc/letsencrypt/live/example.com/chain.pem;
    ssl_session_timeout 1d;
    ssl_session_cache shared:MozSSL:10m;
    ssl_session_tickets off;
    ssl_prefer_server_ciphers off;
    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 1.1.1.1 1.0.0.1 valid=300s;
    resolver_timeout 30s;

    # log files
    access_log /var/log/nginx/example.com.access.log;
    error_log /var/log/nginx/example.com.error.log;

    location = /favicon.ico {
    log_not_found off;
    access_log off;
    }

    location = /robots.txt {
    allow all;
    log_not_found off;
    access_log off;
    }

    location / {
    try_files $uri $uri/ /index.php?$args;
    }

    location ~ \.php$ {
    include snippets/fastcgi-php.conf;
    fastcgi_pass unix:/run/php/php8.1-fpm.sock;
    }

    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
    expires max;
    log_not_found off;
    }
}

then create a symbolic link to the sites-enabled directory.

sudo ln -s /etc/nginx/sites-available/sample.com /etc/nginx/sites-enabled/sample.com
sudo nginx -t
nginx -s reload

References
https://www.hostinger.com/tutorials/how-to-install-wordpress-with-nginx-on-ubuntu/
https://www.nginx.com/resources/wiki/start/topics/recipes/wordpress/
https://wordpress.org/documentation/article/nginx/

Add More Security to Nginx Configuration

sudo openssl dhparam -out /etc/ssl/certs/dhparam.pem 2048
ssl_dhparam /etc/ssl/certs/dhparam.pem;

ssl_session_timeout 1d;
ssl_session_cache shared:SSL:10m;
ssl_session_tickets off;

ssl_protocols TLSv1.2 TLSv1.3;
ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
ssl_prefer_server_ciphers on;

ssl_stapling on;
ssl_stapling_verify on;
resolver 8.8.8.8 8.8.4.4 valid=300s;
resolver_timeout 30s;

add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
add_header X-Frame-Options SAMEORIGIN;
add_header X-Content-Type-Options nosniff;

References
https://linuxize.com/post/secure-nginx-with-let-s-encrypt-on-ubuntu-20-04/

Install Redis on Ubuntu 22.04

sudo apt install redis-server
sudo nano /etc/redis/redis.conf

Inside the file, find the supervised directive. This directive allows you to declare an init system to manage Redis as a service, providing you with more control over its operation. The supervised directive is set to no by default. Since you are running Ubuntu, which uses the systemd init system, change this to systemd

. . .

# If you run Redis from upstart or systemd, Redis can interact with your
# supervision tree. Options:
#   supervised no      - no supervision interaction
#   supervised upstart - signal upstart by putting Redis into SIGSTOP mode
#   supervised systemd - signal systemd by writing READY=1 to $NOTIFY_SOCKET
#   supervised auto    - detect upstart or systemd method based on
#                        UPSTART_JOB or NOTIFY_SOCKET environment variables
# Note: these supervision methods only signal "process is ready."
#       They do not enable continuous liveness pings back to your supervisor.
supervised systemd

. . .
sudo systemctl restart redis.service

References
https://www.digitalocean.com/community/tutorials/how-to-install-and-secure-redis-on-ubuntu-22-04

Configure Remote Access for MongoDB on Ubuntu

sudo nano /etc/mongod.conf

Find the network interfaces section, then the bindIp value:

. . .
# network interfaces
net:
  port: 27017
  bindIp: 127.0.0.1

. . .

Append a comma to this line followed by your MongoDB server’s public IP address:

. . .
# network interfaces
net:
  port: 27017
  bindIp: 127.0.0.1,mongodb_server_ip

. . .

Please note that this should be the IP address of the server on which you’ve installed MongoDB, not the IP address of your trusted remote machine.

sudo systemctl restart mongod

References
https://www.digitalocean.com/community/tutorials/how-to-configure-remote-access-for-mongodb-on-ubuntu-20-04