Nginx wildcard subdomain, map and upstream example

proxy_crazy.conf

# Setup an "upstream" to allow preferences between local or tailscale endpoints for an Ollama service
# Note: I'm running a similar config on my laptop so I can access services while local or remote but
#       use upstream to pick the endpoint to use.
upstream chat {
    ip_hash;
    server 192.168.1.3:11434;
    server 100.44.39.165:11434;
}

# Setup a map to associate our proxy endpoint with the subdomain
map $subdomain $prxy {
    video http://192.168.1.6:8080;
    chat http://chat; # This is our upstream reference
}

server {
    # Match on the subdomain for our website.net domain
    server_name ~^(?<subdomain>\w+)\.website\.net$;

    # Proxy subdomain matches and include url paramaters
    location / {
        proxy_pass $prxy;
        include proxy_params;
    }
}

Still need to do a few things to clean up formatting, handle errors better, and ensure letsencrypt/certbot compatibility.

• add and validate a "default" value to the map or redirect if not $prxy
• validate existing server_name works with LE/Certbot, if not move to *.primary.com and extract subdomain differently
• dockerize this with hot reload on conf changes