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I had bought a domain in namecheap, and want to setting up my subdomain in digital ocean. Currently I only had one droplet and running ubuntu linux 14.04. My site was running in grunt at null:3000 which is localhost:3000. In apache2 conf, I had used proxypass redirect to my site. Right now, things are getting weird, my domain.com works yesterday, but today doesn't work anymore.

NameCheap

NS Record to digital ocean ns1, ns2 and ns3
A Record mydomain.com ipaddressdroplet
A Record subdomain.mydomain.com ipaddressdroplet

Digital Ocean

A Record mydomain.com ipaddressdroplet
A Record subdomain.mydomain.com ipaddressdroplet
NS Record to digital ocean ns1, ns2 and ns3 Apache2 Configuration

000-default.conf

<VirtualHost *:80>

        ServerAdmin webmaster@localhost
        ServerName www.mydomain.com
        DocumentRoot /var/www/mydomain

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

subdomain.mydomain.com.conf

<VirtualHost *:80>
        ServerAdmin webmaster@localhost
        DocumentRoot /var/www/subdomain
        ServerName subdomain.mydomain.com

        <Directory /var/www/subdomain>
        Options Indexes FollowSymLinks MultiViews
        AllowOverride all
        Order allow,deny
        allow from all
                Require all granted
    </Directory>


        <Location />
                ProxyPass http://localhost:3000/
                ProxyPassReverse http://localhost:3000/
        </Location>

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

</VirtualHost>

/etc/apache2/sites-available/000-default.conf used for mydomain.com /etc/apache2/sites-available/subdomain.mydomain.com.conf for subdomain. I had used a2ensite command to activate my subdomain, but the site doesn't work, it show the site can't be reached. Currently, both sites doesn't work.

Accepted Answer

hansen July 2, 2017

Accepted Answer

Hi @catergogo

If you have setup your domain to use DigitalOcean's name servers via your registrar (which in your case is NameCheap), then you only need to configure DNS records via DigitalOcean.
But note that changing name servers can take up to 48 hours, so your domain might be going in-and-out if the DNS records are not the same at both the old and new NS.

It would help a lot more if you posted your domain, but otherwise you can check the current name servers, A/CNAME/etc records with this command:

dig yourdomain.com NS
dig yourdomain.com A
dig www.yourdomain.com CNAME

Your Apache configuration looks correct, so this it probably just a domain issue.
Just to make sure of that, run sudo apachectl configtest.

Reply

catergogo July 5, 2017

Hi, I just realised mydomain.com is down and subdomain is working fine. What happens?

My domain is my account name with .com
- hansen July 5, 2017
  
  @catergogo
  When you run this command, does it give you 3 nsX.digitalocean.com ?
  
  dig yourdomain.com NS
  
  And do you get your droplet IP address when you run these?
  
  dig yourdomain.com A dig subdomain.yourdomain.com A
- hansen July 5, 2017
  
  @catergogo
  
  Ignore that, didn't understand the last line correctly, but now I did.
  
  Your name servers are with NameCheap, so either they have been transferred back, or never been transferred initially.
  
  You need to setup the name servers (NS) on NameCheap to point to DigitalOceans, then you can setup the A, CNAME, TXT records on the DigitalOcean control panel.
  
  This tutorial might be a little old, so maybe NameCheap has changed their web-interface, but it might help you:
  https://www.digitalocean.com/community/tutorials/how-to-point-to-digitalocean-nameservers-from-common-domain-registrars#registrar-namecheap
  
  How to Point to DigitalOcean Nameservers From Common Domain Registrars
  DNS is the naming system that is used to bind a domain name to a web server. In this guide, we will change the nameservers for a domain that we have registered and point it to a DigitalOcean Droplet.

Answer 2

catergogo July 5, 2017

Hi, I just realised mydomain.com is down and subdomain is working fine. What happens?

My domain is my account name with .com
- hansen July 5, 2017
  
  @catergogo
  When you run this command, does it give you 3 nsX.digitalocean.com ?
  
  dig yourdomain.com NS
  
  And do you get your droplet IP address when you run these?
  
  dig yourdomain.com A dig subdomain.yourdomain.com A
- hansen July 5, 2017
  
  @catergogo
  
  Ignore that, didn't understand the last line correctly, but now I did.
  
  Your name servers are with NameCheap, so either they have been transferred back, or never been transferred initially.
  
  You need to setup the name servers (NS) on NameCheap to point to DigitalOceans, then you can setup the A, CNAME, TXT records on the DigitalOcean control panel.
  
  This tutorial might be a little old, so maybe NameCheap has changed their web-interface, but it might help you:
  https://www.digitalocean.com/community/tutorials/how-to-point-to-digitalocean-nameservers-from-common-domain-registrars#registrar-namecheap
  
  How to Point to DigitalOcean Nameservers From Common Domain Registrars
  DNS is the naming system that is used to bind a domain name to a web server. In this guide, we will change the nameservers for a domain that we have registered and point it to a DigitalOcean Droplet.

Setup subdomain in digital ocean and namecheap

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