Galera 3 node cluster + web servers ¿load balancer best route?


I’m trying to get a redundant setup with MariaDB Galera (3 nodes cluster).

I have 4 web servers that needs to read/write (not too heavy currently) to the cluster. However, the only piece missing is the “bridge” between web servers and the DB cluster.

What would be the best option? A load balancer? How much of a single point of failure the load balancer would be?

I don’t want to over complicate things either. Any idea is welcomed.


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.

Hello, @raenk

I believe you should be fine with e Load Balancer setup. The load balancer can be a small node which will only redirect the requests. You can use Galera Load Balancer (glb) for this. it should work perfectly.

If you’re afraid that with load balancer in place there is a single point of failure you can grand more resources to the load balancer or simply setup a small test environment to see if this setup will be suitable with your needs.

Let me know if you have any questions.