mc admin info
The mc admin info command displays information on an MinIO AIStor server. For distributed MinIO AIStor deployments, mc admin info displays information for each node in the deployment.
The output of the command resembles the following for a four-node cluster:
╭───────────────────────────────────────────────╮
│ MinIO Cluster: ● Online │ Edition: AIStor │
╰───────────────────────────────────────────────╯
Capacity
╭───────────────────────────────────────────────────────────────────────────────╮
│ Used: 1.5 TiB / 12 TiB [██████░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░] 12.5% │
│ Free: 10.5 TiB │
╰───────────────────────────────────────────────────────────────────────────────╯
Servers
╭─────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ ● node1.example.com:9000 │ Uptime: 3 days │ Drives: 4/4 │ Pool: 1 │ Version: 2025-01-01T00-00-00Z │
│ ● node2.example.com:9000★ │ Uptime: 3 days │ Drives: 4/4 │ Pool: 1 │ Version: 2025-01-01T00-00-00Z │
│ ● node3.example.com:9000 │ Uptime: 3 days │ Drives: 4/4 │ Pool: 1 │ Version: 2025-01-01T00-00-00Z │
│ ● node4.example.com:9000 │ Uptime: 3 days │ Drives: 4/4 │ Pool: 1 │ Version: 2025-01-01T00-00-00Z │
╰─────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
Pools
╭────────────────────────────────────────────────────╮
│ Pool │ Usage │ Stripe Size │ Sets │
│ 1st │ 12.5% (12 TiB) │ 16 │ 1 │
╰────────────────────────────────────────────────────╯
Data Summary
╭────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ Used: 1.5 TiB │ Buckets: 12 │ Objects: 48,000 │ Delete Markers: 0 │ Drives: 16 online / 0 offline │ Erasure Code: 4 │
╰────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
The ★ suffix on a node address in the Servers section identifies the current cluster-wide leader node.
The leader is assigned dynamically and may change over the lifetime of the cluster, so the marked node can differ between runs of the command.
Syntax
Parameters
TARGET
Required
The alias about which you want to display information.
--offline
Optional
Show only offline drives or nodes.
Node states
The mc admin info command displays the current state of each node in the cluster.
Nodes can be in one of the following states:
| State | Description |
|---|---|
| Online | Node is operational and serving requests. Displays uptime duration. |
| Draining | Node is completing existing requests before cordoning. Displayed in yellow. |
| Cordoned | Node is offline for maintenance. Displayed in yellow. |
| Offline | Node is not responding. Displayed in red. |
For cordoned or draining nodes, the Servers section displays the state in place of the uptime. The following example shows the Servers section for a four-node cluster with one node cordoned for maintenance:
Servers
╭─────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ ● node1.example.com:9000★ │ Uptime: 3 days │ Drives: 4/4 │ Pool: 1 │ Version: 2025-01-01T00-00-00Z │
│ ● node2.example.com:9000 │ Cordoned │ Drives: 0/4 │ Pool: 1 │ Version: 2025-01-01T00-00-00Z │
│ ● node3.example.com:9000 │ Uptime: 3 days │ Drives: 4/4 │ Pool: 1 │ Version: 2025-01-01T00-00-00Z │
│ ● node4.example.com:9000 │ Uptime: 3 days │ Drives: 4/4 │ Pool: 1 │ Version: 2025-01-01T00-00-00Z │
╰─────────────────────────────────────────────────────────────────────────────────────────────────────────────╯