hintofbasil / digitalocean-floating-ip-controller

Keeps floating IPs assigned to your Kubernetes cluster

digitalocean-floatingip-controller

Keeps floating IPs assigned to your Kubernetes cluster

Overview

This project is intended to be run as a Kubernetes pod inside a DOK (DigitalOcean Kubernetes) cluster.

The controller will assign a floating IP (via the DigitalOcean API) to a cluster node. The lifecycle of the application is:

1. Get list of nodes
2. Select a node to assign

• Currently the first returned node is selected

3. Check if the IP is already assigned to this node

• If so, do nothing
• If not, assign it

4. Sleep for a time, then repeat

Configuration

You must provide the following as environment variables:

• DIGITALOCEAN_TOKEN
  • DigitalOcean API token
• FLOATING_IP
  • Floating IP address that this controller manages

You can provide the following as environment variables:

• NODE_SELECTOR
  • Value for labelSelector on the node query

Deploy

You can customize the deploy.yaml file then kubectl apply it to install to a cluster. You can also use kustomize in the subdirectory.