Set up custom subdomain for Jekyll Blog hosted in Github Pages

github, github-pages, host, jekyll, subdomain

Solution

The setup is different for domains like `example.com` and sub-domains like `blog.example.com`.

In case of a sub-domain: blog.example.com

- Go to Domains | Manage Domains in your webpanel

- Locate `blog.example.com`, click Delete in the Actions column

- Wait 10 minutes, and then click the DNS link below `example.com`

- Add a `CNAME` record:

- Name = `blog`

- Type = `CNAME`

- Value = `yourusername.github.io.` (yes there is a `.` at the end!)

In case of a domain: example.com

- Go to Domains | Manage Domains in your webpanel

- Locate `example.com`, click Edit in the Actions column and switch to DNS only hosting (it's at the bottom)

- Go back to Domains | Manage Domains in your webpanel

- Click the DNS link below `example.com`

- Add an `A` record:

- Name = (blank, nothing)

- Type = `A`

- Value = `185.199.108.153` (GitHub, from this page)

- Add a `CNAME` record:

- Name = `www`

- Type = `CNAME`

- Value = `yourusername.github.io.` (yes there is a `.` at the end!)

(Yes, you need both the `A` and `CNAME` records in this case.)

Btw, the only reason I know this is because I did the same thing last weekend. I was quite lost, but the helpful support guys helped me half way, and I figured out the rest. This procedure works for me, I needed both cases so I tested both.

Problem

I created a Jekyll-powered blog and am hosting it with GitHub Pages. Now, I want to set up a subdomain (blog.example.com), but can't make it work. I have added a CNAME file with the text: blog.example.com. And I have added two A records in my Dreamhost account for the subdomain, both pointing to 204.232.175.78, provided by GitHub. Any idea about what the missing part is, or if I'm doing something incorrectly?

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