میزبانی چند سایت و زیردامنه روی یک سرور nginx

/var/www/site-a.com/html
/var/www/site-b.com/html
/etc/nginx/sites-available/site-a.com
/etc/nginx/sites-available/site-b.com
/var/log/nginx/site-a.com.access.log

# /etc/nginx/sites-available/site-a.com
server {
    listen 80;
    server_name site-a.com www.site-a.com;
    root /var/www/site-a.com/html;
    index index.html;
    location / { try_files $uri $uri/ =404; }
    access_log /var/log/nginx/site-a.com.access.log;
    error_log  /var/log/nginx/site-a.com.error.log;
}

# /etc/nginx/sites-available/site-b.com
server {
    listen 80;
    server_name site-b.com www.site-b.com;
    root /var/www/site-b.com/html;
    index index.html;
    location / { try_files $uri $uri/ =404; }
    access_log /var/log/nginx/site-b.com.access.log;
    error_log  /var/log/nginx/site-b.com.error.log;
}

sudo ln -s /etc/nginx/sites-available/site-a.com /etc/nginx/sites-enabled/
sudo ln -s /etc/nginx/sites-available/site-b.com /etc/nginx/sites-enabled/
sudo nginx -t && sudo systemctl reload nginx

server {
    listen 80;
    server_name ~^(?<sub>[a-z0-9-]+)\.example\.com$;

    root /var/www/subdomains/$sub;
    index index.html;

    location / {
        try_files $uri $uri/ =404;
    }
}

server {
    listen 80 default_server;
    listen [::]:80 default_server;
    server_name _;
    return 444;
}

#!/usr/bin/env bash
set -euo pipefail
DOMAIN="$1"
mkdir -p "/var/www/$DOMAIN/html"
cat > "/etc/nginx/sites-available/$DOMAIN" <<EOF
server {
    listen 80;
    server_name $DOMAIN www.$DOMAIN;
    root /var/www/$DOMAIN/html;
    index index.html;
    location / { try_files \$uri \$uri/ =404; }
    access_log /var/log/nginx/$DOMAIN.access.log;
    error_log  /var/log/nginx/$DOMAIN.error.log;
}
EOF
ln -sf "/etc/nginx/sites-available/$DOMAIN" "/etc/nginx/sites-enabled/$DOMAIN"
nginx -t && systemctl reload nginx
echo "سایت $DOMAIN ساخته شد."

sudo certbot --nginx -d site-a.com -d www.site-a.com
sudo certbot --nginx -d site-b.com -d www.site-b.com
sudo certbot certificates