Follow live progress of MinIO rebalance or decommission operations with mc admin trace
domain: min.io · 8 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Auth: mc alias with admin credentials: mc alias set myminio https://minio.example.net ACCESS_KEY SECRET_KEY
Trace only rebalance internal calls in real time: mc admin trace --call rebalance myminio
Trace only decommission internal calls: mc admin trace --call decommission myminio
Add internode traffic for deeper visibility: mc admin trace -a --call rebalance myminio
Filter failures only: mc admin trace -e myminio, or by status: mc admin trace -v --status-code 503 myminio; surface slow ops: mc admin trace --response-duration 5ms myminio
Get aggregated call statistics instead of a raw stream: mc admin trace --stats --stats-n 50 myminio
Capture for later analysis: mc admin trace myminio > trace.json, replay with mc admin trace --in trace.json
Official docs: https://min.io/docs/minio/linux/reference/minio-mc-admin/mc-admin-trace.html and https://docs.min.io/enterprise/aistor-object-store/reference/cli/admin/mc-admin-trace/
Known gotchas
Omitting --call streams ALL client-facing API calls — very high volume on a busy cluster; --call accepts s3, scanner, replication, healing, ilm, decommission, rebalance, etc.
-a/--all adds internode traffic and substantially increases trace volume — use only when needed
Flag naming has shifted between doc revisions: AIStor docs show --response-threshold (default 5ms) where older community docs show --response-duration — check mc --version against your installed client
Works only against genuine MinIO/AIStor deployments
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