volume-initializer

README

Volume Initializer

Introduction

This project delivers a mutating admission webhook that can be used to initialize the pvc volumes of pod by injecting init containers into the pod.

The pvc volumes will be mounted to the injected init containers, you can do anything you want to the volumes, such as changing the ownership/permissions/contents of the volumes, just before your original container starts.

One typical usecase is using it to change the ownership/permissions of the volumes because your original containers are not running as root and unable to write data into the volumes.

Installation

Deploy CRD

kubectl apply -f config/crd/bases

Deploy CR

Create a volume initializer yaml and apply it.

Take this for example.

Deploy webhook

kubectl apply -f deploy/webhook-deployment.yaml

Test

Create pod with pvc volumes to test.

Take this for example.

Limitations

• If the pvc matches multiple pvcMatchers and init containers, only the first init container will be injected.