How do I backup my keyring file within a Kubernetes Cluster on GKE?

MySQL & MariaDB Percona Operator for MySQL
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I am trying to backup my keyring file within a Percona XtraDB Cluster running on a GKE cluster. The keyring file is stored on a persistent disk.

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Hello @brucel33,

hope you are well. Could you please tell me more about your setup? I assume that you use data-at-rest encryption and you use our Operator. Is that correct?
Do you use Hashicorp Vault for it or manually set the key?

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