I created an instance on DO for hosting mongo as my current host does not offer it. I want to make a subdomain for that mongo instance so that I can add SSL, but curious if I can do that if my domain is pointed at a different server.
I own the domain name so I can configure it however I want but I’ve never done such a thing and wanted to know if its possible and how.
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This can be done.
after installing mongodb on your droplet…
Setup your subdomain to point at the IP of your droplet. Install certbot for Letsencrypt - https://certbot.eff.org/ You will need to setup and configure a webserver to answer certbot on port 80 - NGINX and/or HAProxy should suffice
After a successful cert issue you should be able to configure mongo with the LE cert - you may need to leave HA/NGINX in place to answer on port 80 for the renewals
I would suggest using HAProxy as you can configure all your http traffic through there on the droplet.
I’m not very familiar with mongo still let me see if I can help.
Yes it’s totally possible to use SSL for the domain as well as subdomain. Subdomains are nothing more that an A or a CNAME record. SSLs work over any port so just make sure that port is accessible on the internet.