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Using DigitalOcean features to create a reliable server architecture

Today I have several droplets for single tasks:

  • Apache / PHP - Quantity: 1
  • PostgreSQL - Quantity: 1
  • NodeJS - Quantity: 1
  • ElasticSearch - Quantity: 1

Unfortunately on November 14, 2018 one of these droplets went offline due to a hardware failure on the server and the Hypervisor was under maintenance.

I know this has little chance of occurring, but when it did it caused huge inconvenience for us.

What would be the best way to use DigitalOcean’s features to prevent this? That is, when one server crashes there is another ready to run immediately.

Can using the load balancing feature solve this? Are there any risks of both droplets having hardware failure?

What are your suggestions?

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Bobby Iliev • October 7, 2021

Hello,

Just came across this question. I believe that a good setup using the DigitalOcean products would be:

  • A Managed Loadbalancer to distribute the traffic between your Servers
  • A couple of Droplets behind that Load balancer to serve your Apache/PHP application
  • A Managed PostgreSQL cluster so that you could have a stand by failover node
  • Spaces for your static files

The setup would look like a little bit this:

This is taken from this tutorial here:

https://www.digitalocean.com/community/tutorials/how-to-set-up-a-scalable-laravel-6-application-using-managed-databases-and-object-storage

This tutorial is specifically for Laravel, but the scaling itself is applicable to all kinds of applications.

Best, Bobby

Managed Load Balancers on DigitalOceanProduct

Load balancing, simplified:

  • Scale your applications and improve availability, security, and performance across your infrastructure in a few clicks
  • Automatically provision and renew SSL certificates free of charge through Let's Encrypt
  • Seamlessly add Load Balancers to your DigitalOcean Kubernetes cluster

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