Check MinIO cluster/server health with mc admin info
domain: min.io · 4 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Get an overview of a deployment's health: mc admin info ALIAS -> shows cluster Online status, Capacity (Used/Free), Servers, Pools, and a Data Summary (buckets, objects, drives online/offline, erasure-code config).
Filter to only problem nodes/drives: mc admin info --offline ALIAS (fastest way to spot degraded health in a large cluster).
Watch mode with refresh interval: mc admin info --watch --interval 5s ALIAS (interval defaults to 2s and only applies with --watch).
Force a fresh fetch instead of cached info: mc admin info --uncached ALIAS.
Known gotchas
Take the Alias base path (e.g. myaistor) - pointing at a bucket/object path is not the intent.
Node states shown: Online (uptime), Draining (yellow, finishing requests before cordon), Cordoned (yellow, offline for maintenance), Offline (red, not responding).
A '*' suffix marks the current cluster-wide leader node - it is assigned dynamically and can change between runs, so do not hard-depend on the starred node.
--interval silently does nothing unless --watch is set.
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