Question 213159 in Amazon Web Sevices Question posted in
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Amazon web services – Persistent Volume deletion issue

while I scale down EC2 node count into zero (basically EC2 gets terminated)under each ASG of EKS cluster and scale up again , then dynamically provisioned EBS(PV) volume gets deleted , though "Delete on termination" flag is set to "No" in case of EBS(PV). why its happening ? suppose if my cluster has currently 3 nodes and if I down 1 node or two nodes then EBS volume persists. But when I down all 3 nodes under ASG then EBS volume gets deleted. Need to know the root cause of it . Thanks in advance.

I tried by checking different scenario like terminating one EC2 /two EC2 instances , but EBS volume still there. Checked PV reclaim policy was mentioned as Delete, but PV lifecycle doesn’t depend on Nodes termination so I ignored this logic.

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2

Answers


  1. 0

    This should not be the case, I myself downscale our worker nodes to 0 many times and never have the PVs got deleted, can you check the Volumes in AWS EC2 dashboard and see if they are actually getting deleted from there or not?

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  2. 0

    Checked PV reclaim policy was mentioned as Delete…

    It should be Retain:

    apiVersion: v1
kind: PersistentVolume
metadata:
  name: ...
spec:
  persistentVolumeReclaimPolicy: Retain  # <-- Ensure "Retain" is used
  ...
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