volume-decorator

volume-decorator

Controller that maintains more runtime information for Kubernetes volume(PVC), such as application identities, real usage, etc.

Features

• Check volume availability when a workload with volumes created.
• Collect workloads attached by of a volume.
• Maintain realtime status of volumes, such as Pending, Expanding, etc.
• Collect current mounted nodes of a volume.
• Collect real usage bytes of a volume.

Prerequisites

These build instructions assume you have a Linux build environment with:

• Docker
• git
• make
• golang version > 1.11, with GO111MODULE=on
• revive go get -u github.com/mgechev/revive

Build

To make the binary, just run:

make volume-decorator

The binary will be located at output/bin/volume-decorator.

Usage

volume-decorator can be deployed inside the kubernetes cluster:

1. Create the RBAC objects needed by volume-decorator:

   kubectl -f deploy/kubernetes/rbac.yaml
   

2. Create a deployment to run the volume-decorator:

   kubectl -f deploy/kubernetes/deployment.yaml
   

Examples

There are a large number of examples in examples.