LibreNMS /etc/nginx/sites-enabled/librenms.example.com.conf for nginx using TLS and HTTP2 by default

librenms.example.com.conf

server {
    listen 80 default_server;
    listen [::]:80 default_server;

    # Redirect all HTTP requests to HTTPS with a 301 Moved Permanently response.
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;

    ssl_certificate /etc/nginx/ssl/librenms.example.com.chain.cer;
    ssl_certificate_key /etc/nginx/ssl/librenms.example.com.key;
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;
    ssl_session_tickets off;

    ssl_dhparam /etc/nginx/dhparam.pem;

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

    add_header Strict-Transport-Security max-age=15768000;

    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 8.8.8.8 8.8.4.4 valid=300s;
    resolver_timeout 5s;

    server_name librenms.example.com;
    root /opt/librenms/html;
    access_log /opt/librenms/logs/access_log;
    error_log /opt/librenms/logs/error_log;

    index index.php;

    location / {
        try_files $uri $uri/ @librenms;
    }

    location ~ \.php {
        fastcgi_keep_conn on;
        fastcgi_pass   unix:/var/run/php5-fpm.sock;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include        fastcgi_params;
    }

    location ~ /\.ht {
        deny all;
    }

    location @librenms {
        rewrite api/v0(.*)$ /api_v0.php/$1 last;
        rewrite ^(.+)$ /index.php/$1 last;
    }
}