server {

    listen 80;
    listen [::]:80;

    server_name sitename.org;
    root /var/www/yii/frontend/web;
    index index.php index.html index.htm;

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

    location ~ \.php$ {
        try_files $uri /index.php =404;
        fastcgi_pass php-upstream;
        fastcgi_index index.php;
        fastcgi_buffers 32 32k;
        fastcgi_buffer_size 64k;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }

    location ~ /\.ht {
        deny all;
    }

    location /.well-known/acme-challenge/ {
        root /var/www/letsencrypt/;
        log_not_found off;
    }

    error_log /var/log/nginx/app_error.log;
    access_log /var/log/nginx/app_access.log;
}

# configuration file /etc/nginx/sites-available/sitename.conf:

# configuration file /etc/nginx/sites-available/sitename2.conf: