Subdomain / DNS records setup on a single Ubuntu 18.04 droplet running with Django, Postgres, Nginx, Gunicorn

November 19, 2019 306 views
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By:
bengaltiger

Hi,

When I first created an Ubuntu 18.04 droplet I used domain name as www.example.com and successfully completed all the steps documented here
https://www.digitalocean.com/community/tutorials/how-to-set-up-django-with-postgres-nginx-and-gunicorn-on-ubuntu-18-04

and I did not use www.example.com, dev.example.com and example.com any where in any of the steps. I only used IP address.

Since my requirement is to use this droplet only for subdomain, I changed domain name from www.example.com to ‘dev.example.com’.

My requirement is to setup another droplet for production to launch the site with domain name ’www.example.com’.

Now I need to install 'TLS/SSL certificates’ by following steps documented here
https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-18-04

But I need to setup all DNS records required for subdomain 'dev.example.com’ so that we can use this domain during development of the application.

Note: the domain name 'example.com’ is registered with godaddy and I already pointed DO nameservers for this domain.

Could someone point right steps for adding DNS records for both main and subdomains to achieve my requirement.

thanks

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2 Answers
alexdo MOD November 20, 2019

Hello, @bengaltiger

If you’re using GoDaddy’s nameservers for you domain name than you can make the DNS change from their DNS control panel. Basically you need to make sure that the A record is pointed to the IP address of your droplet. The same goes for the subdomain - dev.example.com, the A record of the subdomain needs to be pointed to the IP address of your droplet/server.

Hope this helps. Let me know if you have any questions.

Regards, Alex

bengaltiger November 20, 2019

Hello Alex,

Thank you for answering my question. Yes I’ve done what you suggested, but my requirement is to operate dev.example.com. and www.example.com independently as replicated hosts. That means both the sites will be accessible publicly.

I’m adding here details of the droplet that is created and configured so far. Production droplet is yet to be bought.

  1. Ubuntu 18.x droplet was created successfully
  2. Add the domain as example.com
  3. Updated the domain at Godaddy with DO nameservers
  4. Created DNS records as follows 4.1. NS record is pointed to ns1,ns2,ns3.digitalocean.com with hostname as ‘example.com’ 4.2. A record with hostname: dev.example.com with value = ip1 4.3. A record with hostname: www.dev.example.com with value = ip1 4.4. CAA record with hostname: dev.example.com with value = letsencrypt.org 4.5. CAA record with hostname: www.dev.example.com with value = letsencrypt.org 4.6. MX record with hostname: exampe.com with value = alt4.aspmx.l.google.com.

Hope the above are correct and I would like to know what should be settings for production settings by considering the above is running in parallel. Sorry for my long question.

Best regards

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