How to setup grpc server on vps

Assume you use Cloudflare for proxying your domain.

For this guide, the domain is grpc.skpstack.uk

Enable gRPC support in Cloudflare

1. Log in to Cloudflare.
2. Go to Network.
3. Toggle gRPC to On.
4. Go to SSL/TLS. Ensure it is set to Full or Full (Strict).

Config Nginx

sudo -e /etc/nginx/sites-available/grpc.skpstack.uk

or

sudo -e /etc/nginx/sites-available/<your-domain>

Add the following configuration:

server {
    server_name grpc.skpstack.uk;
    # or
    # server_name <your-domain>;

    access_log /var/log/nginx/grpc_access.log;
    error_log /var/log/nginx/grpc_error.log;

    # The location matches the "package.Service" name from your .proto file
    location /synapse.Generate/ {
        grpc_pass grpc://localhost:50051;
        # or
        # grpc_pass grpc://<ip>:<port>;

        # increase timeouts if needed
        #grpc_read_timeout 600s;
        #grpc_send_timeout 600s;
        #grpc_connect_timeout 60s;

        grpc_set_header Host $host;
        grpc_set_header X-Real-IP $remote_addr;
        grpc_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    location / {
        return 404;
    }

    listen 80;
}

Enable the site and test Nginx configuration:

sudo ln -s /etc/nginx/sites-available/grpc.skpstack.uk /etc/nginx/sites-enabled/

Get the SSL Certificate:

sudo certbot --nginx -d grpc.skpstack.uk

sudo nginx -t
sudo systemctl daemon-reload
sudo systemctl restart nginx

Correct this line after certbot:

listen 443 ssl http2;

sudo nginx -t
sudo systemctl daemon-reload
sudo systemctl restart nginx

1. Start your gRPC server on port 50051 or the port you specified in the Nginx config.
2. You can now access your gRPC server via grpc.skpstack.uk:443.