How to install SSL and protect Kepler node

I am having problem like how to configure SSL, domain, how to configure in docker-compose.yml file.
for Proxy Service, how to configure.
Can someone create a tutorial so we can all apply.
Security is of the utmost importance in the operation of the Kepler node!

We have a guide to set this up:

Hope this helps

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Do we need to stop indexing before we add SSL Certificate?

U don’t need to stop indexing before we add SSL Certificate

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“Edit your NGINX configuration to add the following (e.g. it would usually be at /etc/nginx/sites-available/ )”

# /etc/nginx/sites-available/
server {
    listen 443 ssl; // Update the ports to listen on
    listen [::]:443 ssl;

    server_name; // update the server name to match your DNS address

    location / {


can’t understand this moment. If I do everything step by step like in the tutorial I have only “default” file in the /etc/nginx/sites-available/. If I create file with my domain name like “” and paste inside this config (using my own server name) and then create link like this -

sudo ln -s /etc/nginx/sites-available/ /etc/nginx/sites-enabled/

I can’t start the certbot. I see an error: “Error while running nginx -c /etc/nginx/nginx.conf -t.”,
“nginx: [emerg] no “ssl_certificate” is defined for the “listen … ssl” directive in /etc/nginx/sites-enabled/”
" The nginx plugin is not working; there may be problems with your existing configuration.
The error was: MisconfigurationError(‘Error while running nginx -c /etc/nginx/nginx.conf -t.\n\nnginx: [emerg] no “ssl_certificate” is defined for the “listen … ssl” directive in /etc/nginx/sites-enabled/\nnginx: configuration file /etc/nginx/nginx.conf test failed\n’)"

I have not worked with nginx before and do not know how to configure it correctly


I came across a helpful guide on DigitalOcean that explains how to set up Nginx and Certbot: How To Secure Nginx with Let's Encrypt on Ubuntu 22.04 | DigitalOcean

However, I personally faced some issues with nginx and ended up using apache2 with certbot by following a separate guide on DigitalOcean.