Check whether manual healing is needed and run mc admin heal on a MinIO deployment

domain: min.io · 7 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗

Documented steps

  1. Auth: mc alias with admin credentials holding admin:Heal permission
  2. Preview what would be healed (dry run): mc admin heal -n myminio/mybucket/myprefix
  3. Run a recursive heal on the bucket or prefix: mc admin heal -r myminio/mybucket/myprefix
  4. Use --scan deep for a slower, more thorough scan if bit rot is suspected: mc admin heal -r --scan deep myminio/mybucket
  5. Target part of the cluster: mc admin heal --pool 1 --set 2 myminio; add -v or --all-drives for per-drive status
  6. Review aggregate statistics for healed objects, failures, and healing rate
  7. Official docs: https://docs.min.io/enterprise/aistor-object-store/reference/cli/admin/mc-admin-heal/

Known gotchas

Related routes

Force-start a new MinIO heal sequence even if one is already running (mc admin heal --force-start)
min.io · 4 steps · unrated
force-stop a running MinIO heal sequence (mc admin heal --force-stop)
min.io · 4 steps · unrated
Run a deep-scan heal on MinIO objects to catch silent corruption (mc admin heal --scan deep)
min.io · 4 steps · unrated

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