How to redirect a Heroku subdomain to an external VPS?

Question

I have the following setup:

Wordpress blog hosted on a VPS (ip: 123.44.55.66)
Heroku app live at (my-app.heroku.com)
Domain name bought from Namecheap (www.my-app.com)
Heroku domain is already setup so it correctly shows up on www.my-app.com

I want to be able to redirect blog.my-app.com to my VPS (hiding the IP and showing as blog.my-app.com) but can't seem to get it to work. I've tried setting the A record of my NameCheap DNS to point to 123.44.55.66 but that doesn't seem to work.

What additional configuration am I missing?

It's not redirecting anywhere. Also, running `host blog.my-app.com` returns a `Host blog.my-app.com not found: 3(NXDOMAIN)` — Henrique, Aug 13 '18 at 20:35

score 0 · Answer 1 · answered Aug 14 '18 at 07:07

Finally got it to work. Here is the final configuration:

Heroku
Add a new domain

Domain name: blog.my-app.com
DNS target: blog.my-app.com.herokudns.com

NameCheap DNS
First setup an A record:

Type: A
Host: blog
Value: 123.44.55.66
TTL: Automatic

Now setup a URL Redirect Record

Type: URL Redirect Record
Host: @
Value: http://blog.my-app.com

WordPress Settings (in your VPN)

WordPress Address (URL): http://blog.my-app.com
Site Address (URL): http://blog.my-app.com

How to redirect a Heroku subdomain to an external VPS?

1 Answers1