Minio Admin Complete Guide Slack

Minio Client (mc) provides admin sub-command to perform administrative tasks on your Minio deployments.

service      Stop, restart or get the status of Minio servers
info         Display Minio server information
credentials  Change server access and secret keys
config       Manage server configuration file
heal         Heal disks, buckets and objects on Minio server

1. Download Minio Client

Docker Stable

docker pull minio/mc
docker run minio/mc admin info play

Docker Edge

docker pull minio/mc:edge
docker run minio/mc:edge admin info play

Homebrew (macOS)

Install mc packages using Homebrew

brew install minio/stable/mc
mc --help

Binary Download (GNU/Linux)

Platform Architecture URL
GNU/Linux 64-bit Intel https://dl.minio.io/client/mc/release/linux-amd64/mc
chmod +x mc
./mc --help

Binary Download (Microsoft Windows)

Platform Architecture URL
Microsoft Windows 64-bit Intel https://dl.minio.io/client/mc/release/windows-amd64/mc.exe
mc.exe --help

Install from Source

Source installation is intended only for developers and advanced users. mc update command does not support update notifications for source based installations. Please download official releases from https://minio.io/downloads/#minio-client.

If you do not have a working Golang environment, please follow How to install Golang.

go get -d github.com/minio/mc
cd ${GOPATH}/src/github.com/minio/mc
make

2. Run Minio Client

GNU/Linux

chmod +x mc
./mc --help

macOS

chmod 755 mc
./mc --help

Microsoft Windows

mc.exe --help

3. Add a Minio Storage Service

Minio server displays URL, access and secret keys.

Usage

mc config host add <ALIAS> <YOUR-MINIO-ENDPOINT> <YOUR-ACCESS-KEY> <YOUR-SECRET-KEY>

Alias is simply a short name to your Minio service. Minio end-point, access and secret keys are supplied by your Minio service. Admin API uses "S3v4" signature and cannot be changed.

mc config host add minio http://192.168.1.51:9000 BKIKJAA5BMMU2RHO6IBB V7f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12

4. Test Your Setup

mc is pre-configured with https://play.minio.io:9000, aliased as "play". It is a hosted Minio server for testing and development purposes.

Example:

Get Minio server information from https://play.minio.io:9000

●  play.minio.io:9000
   Uptime : online since 1 day ago
  Version : 2018-05-28T04:31:38Z
   Region :
 SQS ARNs : <none>
    Stats : Incoming 82GiB, Outgoing 28GiB
  Storage : Used 7.4GiB

5. Everyday Use

You may add shell aliases for info, healing.

alias minfo='mc admin info'
alias mheal='mc admin heal'

6. Global Options

Option [--debug]

Debug option enables debug output to console.

Example: Display verbose debug output for info command.

mc admin --debug info play
mc: <DEBUG> GET /minio/admin/v1/info HTTP/1.1
Host: play.minio.io:9000
User-Agent: Minio (linux; amd64) madmin-go/0.0.1 mc/2018-05-23T23:43:34Z
Authorization: AWS4-HMAC-SHA256 Credential=**REDACTED**/20180530/us-east-1/s3/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=**REDACTED**
X-Amz-Content-Sha256: UNSIGNED-PAYLOAD
X-Amz-Date: 20180530T001808Z
Accept-Encoding: gzip

mc: <DEBUG> HTTP/1.1 200 OK
Transfer-Encoding: chunked
Accept-Ranges: bytes
Content-Security-Policy: block-all-mixed-content
Content-Type: application/json
Date: Wed, 30 May 2018 00:18:08 GMT
Server: Minio/DEVELOPMENT.2018-05-28T04-31-38Z (linux; amd64)
Vary: Origin
X-Amz-Request-Id: 1533440573A63034
X-Xss-Protection: "1; mode=block"

mc: <DEBUG> Response Time:  140.70112ms

●  play.minio.io:9000
   Uptime : online since 1 day ago
  Version : 2018-05-28T04:31:38Z
   Region :
 SQS ARNs : <none>
    Stats : Incoming 82GiB, Outgoing 28GiB
  Storage : Used 7.4GiB

Option [--json]

JSON option enables parseable output in JSON format.

Example: Minio server information.

mc admin --json info play
{
  "status": "success",
  "service": "on",
  "address": "play.minio.io:9000",
  "error": "",
  "storage": {
    "used": 7979370172,
    "backend": {
      "backendType": "FS"
    }
  },
  "network": {
    "transferred": 90473434722,
    "received": 30662519192
  },
  "server": {
    "uptime": 157467244813288,
    "version": "2018-05-28T04:31:38Z",
    "commitID": "7d8c5ffb13334f4aec20a35bd2575bd7c740fb7a",
    "region": "",
    "sqsARN": []
  }
}

Option [--no-color]

This option disables the color theme. It is useful for dumb terminals.

Option [--quiet]

Quiet option suppress chatty console output.

Option [--config-folder]

Use this option to set a custom config path.

Option [ --insecure]

Skip SSL certificate verification.

7. Commands

service - Start, stop or get the status of Minio server
info - Display Minio server information
credentials - Change server access and secret keys
config - Manage server configuration file
heal - Heal disks, buckets and objects on Minio server

Command service - Stop, restart or get status of Minio server

service command provides a way to restart, stop one or get the status of Minio servers (distributed cluster)

NAME:
  mc admin service - Stop, restart or get status of Minio server

FLAGS:
  --help, -h                       Show help.

COMMANDS:
  status   Get the status of Minio server
  restart  Restart Minio server
  stop     Stop Minio server

Example: Display service uptime for Minio server.

mc admin service status play
Uptime: 1 days 19 hours 57 minutes 39 seconds.

Example: Restart remote minio service.

NOTE: restart and stop sub-commands are disruptive operations for your Minio service, any on-going API operations will be forcibly cancelled. So, it should be used only under certain circumstances. Please use it with caution.

mc admin service restart play
Restarted `play` successfully.

Command info - Display Minio server information

info command displays server information of one or many Minio servers (under distributed cluster)

NAME:
  mc admin info - Get Minio server information

FLAGS:
  --help, -h                       Show help.

Example: Display Minio server information.

●  play.minio.io:9000
   Uptime : online since 1 day ago
  Version : 2018-05-28T04:31:38Z
   Region :
 SQS ARNs : <none>
    Stats : Incoming 82GiB, Outgoing 28GiB
  Storage : Used 8.2GiB

Command credentials - Change server access and secret keys

credentials command to set new credentials of a Minio server.

NAME:
  mc admin credentials - Change server access and secret keys

FLAGS:
  --help, -h                       Show help.

Example: Set new credentials of a Minio server represented by its alias 'myminio'.

mc admin credentials myminio/ minio minio123

Command config - Manage server configuration

config command to manage Minio server configuration.

NAME:
  mc admin config - Manage configuration file

USAGE:
  mc admin config COMMAND [COMMAND FLAGS | -h] [ARGUMENTS...]

COMMANDS:
  get  Get config of a Minio server/cluster.
  set  Set new config file to a Minio server/cluster.

FLAGS:
  --help, -h                       Show help.

Example: Get server configuration of a Minio server/cluster.

mc admin config get myminio > /tmp/my-serverconfig

Example: Set server configuration of a Minio server/cluster.

mc admin config set myminio < /tmp/my-serverconfig

Command heal - Heal disks, buckets and objects on Minio server

heal command heals disks, missing buckets, objects on Minio server. NOTE: This command is only applicable for Minio erasure coded setup (standalone and distributed).

NAME:
  mc admin heal - Heal disks, buckets and objects on Minio server

FLAGS:
  --recursive, -r                  Heal recursively
  --dry-run, -n                    Only inspect data, but do not mutate
  --force-start, -f                Force start a new heal sequence
  --help, -h                       Show help.

Example: Heal Minio cluster after replacing a fresh disk, recursively heal all buckets and objects, where 'myminio' is the Minio server alias.

mc admin heal -r myminio

Example: Heal Minio cluster on a specific bucket recursively, where 'myminio' is the Minio server alias.

mc admin heal -r myminio/mybucket

Example: Heal Minio cluster on a specific object prefix recursively, where 'myminio' is the Minio server alias.

mc admin heal -r myminio/mybucket/myobjectprefix