storageclass-aws-standard-resizeable.yaml

#
#  Author: Hari Sekhon
#  Date: 2024-12-03 19:03:03 +0700 (Tue, 03 Dec 2024)
#
#  vim:ts=2:sts=2:sw=2:et
#  lint: k8s
#
#  https://github.com/HariSekhon/Kubernetes-configs
#
#  License: see accompanying Hari Sekhon LICENSE file
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#  If you're using my code you're welcome to connect with me on LinkedIn
#  and optionally send me feedback to help improve or steer this or other code I publish
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#  https://www.linkedin.com/in/HariSekhon
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# ============================================================================ #
#  S t o r a g e C l a s s   -   A W S   G P 3   R e s i z e a b l e
# ============================================================================ #

# Storage Class for AWS GP3 disk that allows clients to resize (increase only) simply via changing their requested allocation size

# https://kubernetes.io/docs/concepts/storage/storage-classes/

# https://kubernetes.io/blog/2018/07/12/resizing-persistent-volumes-using-kubernetes/

# https://kubernetes.io/docs/reference/kubernetes-api/config-and-storage-resources/storage-class-v1/

# If you have already deployed using the default 'standard' storageclass and want to be able to resize that, you can patch the default storage class to permit it like so:
#
#   kubectl patch sc ebs-sc -p '{"allowVolumeExpansion": true}'

---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  # generic name so on another cloud vendor you just replace the storageclass but the deployment / statefulset manifests don't need modifying
  name: standard-resizeable
provisioner: kubernetes.io/aws-ebs
parameters:
  type: gp3
  #fsType: ext4
volumeBindingMode: WaitForFirstConsumer
allowVolumeExpansion: true
reclaimPolicy: Retain # for safety, else default: Delete