Key additions:
- NFSv3 broke after NFS restart (kernel lockd bug on PVE 6.14)
- All 52 PVs migrated to NFSv4, NFSv3 disabled on PVE
- DNS zone sync gap: secondary/tertiary had no custom zones
- Converted one-time setup Job to recurring zone-sync CronJob
- MySQL, Redis, Vault collateral damage and fixes
- 3 new lessons learned (zone replication, NFS client state, operator rollout)
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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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