Apache ReverseProxy not working with Node and SSL

Question

I'm trying to setup my app on HTTPS on a web server. I have a valid certificate that is installed on my InMotion host using AutoSSL. I have the node app running on my Centos server on port 3000 and my apache SSL server running on port 443. To route requests made to my website, I am attempting to create a reverse-proxy. I made a file called default-site.conf which is stored in /etc/http.d/conf.d and has the following contents:

<VirtualHost _default_:443>
    SSLProxyEngine on

    ServerName example.com
    ServerAlias www.example.com 

    ProxyRequests Off
    ProxyPreserveHost On
    ProxyVia Full
    <Proxy *>
      Require all granted
    </Proxy>

    ServerAdmin [email protected]
    DocumentRoot /home/USER/my-app/public

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    SSLCertificateFile  /home/USER/ssl/certs/certificate.crt
    SSLCertificateKeyFile /home/USER/ssl/keys/certificate.key


    ProxyPass / https://example.com:3000/
    ProxyPassReverse / https://example.com:3000 /

    <Directory "/home/USER/my-app/public">
        AllowOverride All
    </Directory>        

</VirtualHost>

I will emphasize that the app is accessible at http://example.com:3000 (insecure) but when I attempt to go to https://example.com (secure) I get my blank index.html with a 404 error:

[Error] Failed to load resource: the server responded with a status of 404 (Not Found) (index.js, line 0)

So the node app on port 3000 does not serve HTTPS, but HTTP? Perhaps you meant to ProxyPass(Reverse) to http://example:3000/ instead of https://example:3000/ — cbr
– cbr, Commented Feb 2, 2020 at 0:16
Also, does the node app run on the same machine as the Apache server or on another host? If it's on the same host, it might be bound to http://localhost:3000 instead of http://example.com:3000, depending on how it's set up. — cbr
– cbr, Commented Feb 2, 2020 at 0:20
Is the error the same if you proxypass to http://? If you just console.log all requests over at the node app, does anything come through when you make the request to https://example.com? — cbr
– cbr, Commented Feb 2, 2020 at 0:48
Never mind... I just said screw it and ProxyPassed without a virtual host. — ColonelHedgehog
– ColonelHedgehog, Commented Feb 2, 2020 at 1:15

ColonelHedgehog · Accepted Answer · 2020-02-02 01:16:23Z

3

I managed to fix this issue by completely simplifying my config to the following two lines:

ProxyPass / http://127.0.0.1:3000/
ProxyPassReverse / http://127.0.0.1:3000/

This may not be the most flexible approach but it reroutes the traffic the way I need it to be routed, so for my purposes, it works.

answered Feb 2, 2020 at 1:16

ColonelHedgehog

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