@cdickson5 Thanks for sharing the Kube details.
I’ve reproduced your issue with K3 Rancher and its default settings. I’ve got the same errors as you did.
This confirmed my assumption that the issue is related to the storage and file permissions.
If this is just POC I would suggest disabling persistent volumes.
persistence:
enabled: false
This will stop creating PVCs and PVs in your node and OpenSearch will fully start.
I don’t have a solution for the issue itself yet. I’ll have to investigate it a bit more.