Que resuelve

Guia rapida para publicar servicios internos mediante reverse proxy con Nginx o Caddy, gestionar TLS, cabeceras y errores comunes.

Cuando usarlo

• Exponer una app local en HTTP/HTTPS.
• Terminar TLS en el proxy.
• Enrutar varios dominios al mismo servidor.
• Anadir logs y controles basicos delante de una app.

Nginx: sitio minimo

Crear server block

server {
    listen 80;
    server_name {DOMAIN};

    location / {
        proxy_pass <http://127.0.0.1>:{APP_PORT};
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

Activar sitio

sudo ln -s /etc/nginx/sites-available/{SITE} /etc/nginx/sites-enabled/{SITE}

Validar configuracion

sudo nginx -t

Recargar sin cortar conexiones

sudo systemctl reload nginx

Nginx: WebSocket

location / {
    proxy_pass <http://127.0.0.1>:{APP_PORT};
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header Host $host;
}

Nginx: logs utiles

Ver errores