How to open localhost:8000 using VPS Ubuntu

Question

hello I need help how to open http://localhost:8000 from my pc. because my project polkadot substrate installed on a VPS Ubuntu, after I try to open IP:8000 it also doesn't work

Images

Answer 1

You have to run the substrate node using --rpc-cors all option. Please note that substrate chains don't expose websocket connections to the public internet without some hacking. I am assuming your question asks how to connect a substrate node running on a remote server to your local pc front end. If that's right let's continue:

https://wiki.polkadot.network/docs/maintain-wss

Describes the entire process. You need to install NGINX, configure /etc/nginx/nginx.conf and within the http code block insert the mentioned code, with proper variable replacements. Then generate a self-signed SSL certificate, and open port 9944 and 443 on your remote machine. Next visit the machine with https://IP:443 to whitelist that site, and finally connect to your substrate node with a local installation of polkadot-js-apps. You cannot connect it using the online polkadot.js explorer , so you must use a local connection. And that should get you up and running.