+++
title = "Reverse HTTPS Proxy with Nginx"
date = 2021-08-23T00:00:00
lastmod = 2021-08-23T00:00:00
draft = true

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+++

Objective:

A single computer, hosting things like
* `app1.example.com`
* `app2.example.com`

Each app is represented by a different subdomain of a domain we've registered.

## Subdomain CNAME records

First, add some CNAME records to point those subdomains to your root domain
* `app1.example.com CNAME 1 hour  example.com.`
* `app2.example.com CNAME 1 hour  example.com.`

That should take a couple seconds / a couple minutes to propogate.
Check with 

```
nslookup app1.example.com
```

## nginx proxy

We'll use nginx proxy to aim incoming requests to `app1.example.com` to a particular port.

Start up a test service at the desired port:

```
python3 -m http.server 4567
python3 -m http.server 4568
```

Edit `/etc/nginx/nginx.conf` to do the forwarding.
In the `http` section, add something like

```nginx
server {
    listen 80;
    server_name app1.example.com;

    location / {
        proxy_pass http://localhost:4567;
    }   
}

server {
    listen 80;
    server_name app2.example.com;

    location / {
        proxy_pass http://localhost:4568;
    }   
}
```

Restart nginx

```
systemctl restart nginx`
```

Then navigate to `app1.example.com` and see your stuff!

## nginx proxy with https