Private network IP range, how the addresses are assigned


I have a database server and several app servers. The connection between database and app is over local network only. The number of app servers will be dynamic i.e. I will spin up and destroy servers based on demand. All droplets will run in the same datacenter.

I would like to create a mySQL user that has access only from certain pool if IP addresses. But when I tried to find how local ip is assigned I did not find any guidance.

I would not like to define mysql user as broad as ‘user’@‘10.%.%.%’


Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.

The pool of IP addresses used on the internal private network is shared, so unfortunately there is not a range of addresses that you can safely assume will only be for Droplets created on your account. I’d suggest automating the process of spinning up the new servers using the DigitalOcean API. That way you can retrieve the private IP address and adjust your MySql permissions all in one go.

Another option might be to use a tool like Droplan which periodically queries the API and adjusts your IPtables firewall based on the private IPs of your Droplets. Check it out: