Objectives <ul> <li>Run https://rapid.essbap.org through Cloudflare. </li> <li>This should map to https://ebcc-rrn.herokuapp.com (Rails app)</li> <li>However, I get "too many redirects" pages, e.g.</li> </ul> <img src="https://i.stack.imgur.com/VUWXP.png" alt="enter image description here"> <ul> <li>Have done this successfully before on other Heroku apps, using steps below</li> <li>What am I missing?</li> </ul> What I did <ul> <li>Purchased <code>essbap.org</code> through Godaddy. </li> <li>Imported DNS to Cloudflare. </li> <li>Inserted Cloudflare name servers at Godaddy. </li> <li>Removed zone records from Godaddy.</li> </ul> Cloudflare: <ul> <li>Inserted CNAME record <code>rapid</code> to point to <code>ebcc-rrn.herokuapp.com</code> </li> <li>On Heroku: added custom domain <code>rapid.essbap.org</code> to <code>ebcc-rrn.herokuapp.com</code> </li> </ul> Heroku: <pre class="prettyprint"><code>heroku domains:add rapid.essbap.org === ebcc-rrn Heroku Domain ebcc-rrn.herokuapp.com === ebcc-rrn Custom Domains Domain Name DNS Target ---------------- ---------------------- rapid.essbap.org ebcc-rrn.herokuapp.com $ host rapid.essbap.org rapid.essbap.org has address 104.27.162.137 rapid.essbap.org has address 104.27.163.137 </code></pre> Cloudflare settings <img src="https://i.stack.imgur.com/UcYyF.png" alt="enter image description here"> JUST ADDED: Running curl When I run <code>curl</code> against another Heroku custom domain app that I know works, it looks like: <pre class="prettyprint"><code>$ curl -I some.custom_app.com HTTP/1.1 301 Moved Permanently Location: https://some.custom_app.com/ # since I'm using force_ssl on Rails, we expect to be directed to https:// $ curl -I https://some.custom_app.com/ HTTP/1.1 200 OK </code></pre> Similar behaviour for <code>ebcc-rrn.herokuapp.com</code> (the Herokuapp we want <code>rapid.essbap.org</code> to be an alias for). A 301 then 200. But when I run <code>curl</code> against <code>rapid.essbap.org</code>, I get: <pre class="prettyprint"><code>$ curl -I rapid.essbap.org HTTP/1.1 301 Moved Permanently Location: https://rapid.essbap.org/ # since I'm using force_ssl on Rails, we expect to be directed to https:// $ curl -I https://rapid.essbap.org HTTP/1.1 301 Moved Permanently Location: https://rapid.essbap.org/ </code></pre> We get a 301 instead of a 200 in the second case. Am not sure why the 301 is being generated. Does not happen in dev or with <code>ebcc-rrn.herokuapp.com</code>. What am I missing?

Im my case setting Crypto -> SSL <code>Flexible</code> to <code>Full</code> did the trick.

I experienced the same issue on a site recently, also using Heroku and Cloudflare and SSL. In our case, the solution was that we had to set the SSL option in Cloudflare under Crypto > SSL to <code>Flexible</code>. We had it on <code>Full</code>, which was causing the site to try to use CloudFlare's SSL certificate. It didn't work with the SSL option set to <code>Off</code>.

Heroku custom domains on Cloudflare: Too many redirects

Tags:

ruby-on-rails

heroku

dns

cloudflare

Objectives

Run https://rapid.essbap.org through Cloudflare.
This should map to https://ebcc-rrn.herokuapp.com (Rails app)
However, I get "too many redirects" pages, e.g.

enter image description here

Have done this successfully before on other Heroku apps, using steps below
What am I missing?

What I did

Purchased essbap.org through Godaddy.
Imported DNS to Cloudflare.
Inserted Cloudflare name servers at Godaddy.
Removed zone records from Godaddy.

Cloudflare:

Inserted CNAME record rapid to point to ebcc-rrn.herokuapp.com
On Heroku: added custom domain rapid.essbap.org to ebcc-rrn.herokuapp.com

Heroku:

heroku domains:add rapid.essbap.org

=== ebcc-rrn Heroku Domain
ebcc-rrn.herokuapp.com

=== ebcc-rrn Custom Domains
Domain Name       DNS Target
----------------  ----------------------
rapid.essbap.org  ebcc-rrn.herokuapp.com 

$ host rapid.essbap.org 
rapid.essbap.org has address 104.27.162.137 
rapid.essbap.org has address 104.27.163.137

Cloudflare settings

enter image description here

JUST ADDED:

Running curl

When I run curl against another Heroku custom domain app that I know works, it looks like:

$ curl -I some.custom_app.com
HTTP/1.1 301 Moved Permanently
Location: https://some.custom_app.com/

# since I'm using force_ssl on Rails, we expect to be directed to https://

$ curl -I https://some.custom_app.com/
HTTP/1.1 200 OK

Similar behaviour for ebcc-rrn.herokuapp.com (the Herokuapp we want rapid.essbap.org to be an alias for). A 301 then 200.

But when I run curl against rapid.essbap.org, I get:

$ curl -I rapid.essbap.org
HTTP/1.1 301 Moved Permanently
Location: https://rapid.essbap.org/

# since I'm using force_ssl on Rails, we expect to be directed to https://

$ curl -I https://rapid.essbap.org
HTTP/1.1 301 Moved Permanently
Location: https://rapid.essbap.org/

We get a 301 instead of a 200 in the second case. Am not sure why the 301 is being generated. Does not happen in dev or with ebcc-rrn.herokuapp.com.

What am I missing?

352

asked Jul 30 '15 10:07

Daniel May

2 Answers

Im my case setting Crypto -> SSL Flexible to Full did the trick.

137

answered Sep 23 '22 02:09

chrisby

I experienced the same issue on a site recently, also using Heroku and Cloudflare and SSL.

In our case, the solution was that we had to set the SSL option in Cloudflare under Crypto > SSL to Flexible. We had it on Full, which was causing the site to try to use CloudFlare's SSL certificate. It didn't work with the SSL option set to Off.

answered Sep 24 '22 02:09

stephen.hanson

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