Cómo asegurar Nginx con Letsencrypt en Rocky Linux/Centos 8

Fue desarrollado por Internet Security Research Group (ISRG) y cuenta con la confianza de todos los principales navegadores. Se utiliza para automatizar el proceso de creación, validación, firma, implementación y renovación de certificados para sitios web seguros.

El certificado es válido solo por 90 días, por lo que deberá renovarlo manualmente o configurar el sistema de renovación automática,

Let's encrypt admite la emisión de certificación automatizada para Apache, Nginx, Plex y HAproxy. Cubriremos nginx en esta guía.

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• Cómo instalar Nginx y configurar el host virtual en Ubuntu 20.04

Requisitos previos:

• Servidor CentOS 8 con acceso a internet e IP pública
• Un nombre de dominio válido con DNS apuntado al servidor
• Acceso raíz al servidor Centos 8

Instalación del cliente Certbot Let's Encrypt

Inicie sesión en el servidor usando ssh [email protected] -p port :

ssh [email protected]

Actualice todos sus paquetes a sus últimas versiones disponibles.

sudo dnf update -y

Instalar Nginx

sudo dnf install -y nginx

Iniciar y habilitar nginx

systemctl start nginx
systemctl enable nginx

Para esto, creemos una configuración de nginx:
Configuración de Nginx actualizada:

server {
    listen 80;
    server_tokens off;
    client_max_body_size 10M;
    server_name site1.citizix.com;

    access_log /var/log/nginx/site1.citizix.com/access.log;
    error_log /var/log/nginx/site1.citizix.com/error.log;
    ignore_invalid_headers off;

    ## Deny illegal Host headers
    if ($host !~* ^(site1.citizix.com)$ ) {
        return 444;
    }

    root /var/www/site1.citizix.com;

    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_set_header   Host $host;
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Host $server_name;
        proxy_set_header   X-Real-IP $remote_addr;
        proxy_set_header   X-Scheme $scheme;
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }

}

Instalar el cliente Certbot

Certbot es una herramienta de línea de comandos que se utiliza para simplificar el proceso de obtención y renovación de certificados SSL de Let's Encrypt para su sitio web.

sudo dnf install epel-release
sudo dnf install certbot python3-certbot-nginx

Si usa firewalld, habilite http y https en el firewall:

sudo firewall-cmd --permanent --add-service=http
sudo firewall-cmd --permanent --add-service=https

sudo firewall-cmd --reload

# Verify
sudo firewall-cmd --permanent --list-all

Obtención de un Certificado

Detener nginx:

sudo systemctl stop nginx

sudo certbot --nginx --non-interactive --agree-tos --email [email protected] -d site1.citizix.com

Salida

# sudo certbot --nginx --non-interactive --agree-tos --email [email protected] -d site1.citizix.com
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator nginx, Installer nginx
Account registered.
Requesting a certificate for site1.citizix.com
Performing the following challenges:
http-01 challenge for site1.citizix.com
Waiting for verification...
Cleaning up challenges
Deploying Certificate to VirtualHost /etc/nginx/conf.d/site1.citizix.com.conf
Redirecting all traffic on port 80 to ssl in /etc/nginx/conf.d/site1.citizix.com.conf

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Congratulations! You have successfully enabled
https://site1.citizix.com
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at:
   /etc/letsencrypt/live/site1.citizix.com/fullchain.pem
   Your key file has been saved at:
   /etc/letsencrypt/live/site1.citizix.com/privkey.pem
   Your certificate will expire on 2021-11-05. To obtain a new or
   tweaked version of this certificate in the future, simply run
   certbot again with the "certonly" option. To non-interactively
   renew *all* of your certificates, run "certbot renew"
 - If you like Certbot, please consider supporting our work by:

   Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate
   Donating to EFF:                    https://eff.org/donate-le

Iniciar nginx:

sudo systemctl start nginx

Configuración de Nginx actualizada:

server {
    server_tokens off;
    client_max_body_size 10M;
    server_name site1.citizix.com;

    access_log /var/log/nginx/site1.citizix.com/access.log;
    error_log /var/log/nginx/site1.citizix.com/error.log;
    ignore_invalid_headers off;

    ## Deny illegal Host headers
    if ($host !~* ^(site1.citizix.com)$ ) {
        return 444;
    }

    root /var/www/site1.citizix.com;

    location / {
        proxy_pass http://127.0.0.1:8096;
        proxy_set_header   Host $host;
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Host $server_name;
        proxy_set_header   X-Real-IP $remote_addr;
        proxy_set_header   X-Scheme $scheme;
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }

    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/site1.citizix.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/site1.citizix.com/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}
server {
    if ($host = site1.citizix.com) {
        return 301 https://$host$request_uri;
    } # managed by Certbot

    listen 80;
    server_name site1.citizix.com;
    return 404; # managed by Certbot
}