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526 lines
18 KiB
526 lines
18 KiB
# Golang Admin Client API Reference [](https://slack.minio.io)
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## Initialize Minio Admin Client object.
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## Minio
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```go
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package main
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import (
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"fmt"
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"github.com/minio/minio/pkg/madmin"
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)
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func main() {
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// Use a secure connection.
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ssl := true
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// Initialize minio client object.
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mdmClnt, err := madmin.New("your-minio.example.com:9000", "YOUR-ACCESSKEYID", "YOUR-SECRETKEY", ssl)
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if err != nil {
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fmt.Println(err)
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return
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}
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// Fetch service status.
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st, err := mdmClnt.ServiceStatus()
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if err != nil {
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fmt.Println(err)
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return
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}
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fmt.Printf("%#v\n", st)
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}
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```
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| Service operations | Info operations | Healing operations | Config operations | IAM operations | Misc |
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|:----------------------------|:----------------------------|:--------------------------------------|:--------------------------|:------------------------------------|:------------------------------------|
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| [`ServiceStatus`](#ServiceStatus) | [`ServerInfo`](#ServerInfo) | [`Heal`](#Heal) | [`GetConfig`](#GetConfig) | [`AddUser`](#AddUser) | [`SetAdminCredentials`](#SetAdminCredentials) |
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| [`ServiceSendAction`](#ServiceSendAction) | [`ServerDrivesPerfInfo`](#ServerDrivesPerfInfo) | [`ServerCPULoadInfo`](#ServerCPULoadInfo) | [`ServerMemUsageInfo`](#ServerMemUsageInfo) | [`SetConfig`](#SetConfig) | [`SetUserPolicy`](#SetUserPolicy) | [`StartProfiling`](#StartProfiling) |
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| | | | [`GetConfigKeys`](#GetConfigKeys) | [`ListUsers`](#ListUsers) | [`DownloadProfilingData`](#DownloadProfilingData) |
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| | | | [`SetConfigKeys`](#SetConfigKeys) | [`AddCannedPolicy`](#AddCannedPolicy) | |
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## 1. Constructor
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<a name="Minio"></a>
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### New(endpoint string, accessKeyID string, secretAccessKey string, ssl bool) (*AdminClient, error)
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Initializes a new admin client object.
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__Parameters__
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|Param |Type |Description |
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|:---|:---| :---|
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|`endpoint` | _string_ |Minio endpoint. |
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|`accessKeyID` |_string_ | Access key for the object storage endpoint. |
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|`secretAccessKey` | _string_ |Secret key for the object storage endpoint. |
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|`ssl` | _bool_ | Set this value to 'true' to enable secure (HTTPS) access. |
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## 2. Admin API Version
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<a name="VersionInfo"></a>
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### VersionInfo() (AdminAPIVersionInfo, error)
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Fetch server's supported Administrative API version.
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__Example__
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``` go
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info, err := madmClnt.VersionInfo()
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if err != nil {
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log.Fatalln(err)
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}
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log.Printf("%s\n", info.Version)
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```
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## 3. Service operations
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<a name="ServiceStatus"></a>
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### ServiceStatus() (ServiceStatusMetadata, error)
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Fetch service status, replies disk space used, backend type and total disks offline/online (applicable in distributed mode).
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| Param | Type | Description |
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|`serviceStatus` | _ServiceStatusMetadata_ | Represents current server status info in following format: |
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| Param | Type | Description |
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|---|---|---|
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|`st.ServerVersion.Version` | _string_ | Server version. |
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|`st.ServerVersion.CommitID` | _string_ | Server commit id. |
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|`st.Uptime` | _time.Duration_ | Server uptime duration in seconds. |
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__Example__
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```go
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st, err := madmClnt.ServiceStatus()
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if err != nil {
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log.Fatalln(err)
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}
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log.Printf("%#v\n", st)
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```
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<a name="ServiceSendAction"></a>
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### ServiceSendAction(act ServiceActionValue) (error)
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Sends a service action command to service - possible actions are restarting and stopping the server.
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__Example__
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```go
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// to restart
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st, err := madmClnt.ServiceSendAction(ServiceActionValueRestart)
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// or to stop
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// st, err := madmClnt.ServiceSendAction(ServiceActionValueStop)
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if err != nil {
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log.Fatalln(err)
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}
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log.Printf("Success")
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```
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## 4. Info operations
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<a name="ServerInfo"></a>
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### ServerInfo() ([]ServerInfo, error)
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Fetches information for all cluster nodes, such as server properties, storage information, network statistics, etc.
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| Param | Type | Description |
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|`si.Addr` | _string_ | Address of the server the following information is retrieved from. |
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|`si.ConnStats` | _ServerConnStats_ | Connection statistics from the given server. |
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|`si.HTTPStats` | _ServerHTTPStats_ | HTTP connection statistics from the given server. |
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|`si.Properties` | _ServerProperties_ | Server properties such as region, notification targets. |
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|`si.Data.StorageInfo.Total` | _int64_ | Total disk space. |
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|`si.Data.StorageInfo.Free` | _int64_ | Free disk space. |
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|`si.Data.StorageInfo.Backend`| _struct{}_ | Represents backend type embedded structure. |
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| Param | Type | Description |
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|---|---|---|
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|`ServerProperties.Uptime`| _time.Duration_ | Total duration in seconds since server is running. |
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|`ServerProperties.Version`| _string_ | Current server version. |
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|`ServerProperties.CommitID` | _string_ | Current server commitID. |
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|`ServerProperties.Region` | _string_ | Configured server region. |
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|`ServerProperties.SQSARN` | _[]string_ | List of notification target ARNs. |
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| Param | Type | Description |
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|---|---|---|
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|`ServerConnStats.TotalInputBytes` | _uint64_ | Total bytes received by the server. |
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|`ServerConnStats.TotalOutputBytes` | _uint64_ | Total bytes sent by the server. |
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| Param | Type | Description |
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|`ServerHTTPStats.TotalHEADStats`| _ServerHTTPMethodStats_ | Total statistics regarding HEAD operations |
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|`ServerHTTPStats.SuccessHEADStats`| _ServerHTTPMethodStats_ | Total statistics regarding successful HEAD operations |
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|`ServerHTTPStats.TotalGETStats`| _ServerHTTPMethodStats_ | Total statistics regarding GET operations |
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|`ServerHTTPStats.SuccessGETStats`| _ServerHTTPMethodStats_ | Total statistics regarding successful GET operations |
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|`ServerHTTPStats.TotalPUTStats`| _ServerHTTPMethodStats_ | Total statistics regarding PUT operations |
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|`ServerHTTPStats.SuccessPUTStats`| _ServerHTTPMethodStats_ | Total statistics regarding successful PUT operations |
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|`ServerHTTPStats.TotalPOSTStats`| _ServerHTTPMethodStats_ | Total statistics regarding POST operations |
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|`ServerHTTPStats.SuccessPOSTStats`| _ServerHTTPMethodStats_ | Total statistics regarding successful POST operations |
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|`ServerHTTPStats.TotalDELETEStats`| _ServerHTTPMethodStats_ | Total statistics regarding DELETE operations |
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|`ServerHTTPStats.SuccessDELETEStats`| _ServerHTTPMethodStats_ | Total statistics regarding successful DELETE operations |
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| Param | Type | Description |
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|---|---|---|
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|`ServerHTTPMethodStats.Count` | _uint64_ | Total number of operations. |
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|`ServerHTTPMethodStats.AvgDuration` | _string_ | Average duration of Count number of operations. |
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| Param | Type | Description |
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|---|---|---|
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|`Backend.Type` | _BackendType_ | Type of backend used by the server currently only FS or Erasure. |
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|`Backend.OnlineDisks`| _int_ | Total number of disks online (only applies to Erasure backend), is empty for FS. |
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|`Backend.OfflineDisks` | _int_ | Total number of disks offline (only applies to Erasure backend), is empty for FS. |
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|`Backend.StandardSCData` | _int_ | Data disks set for standard storage class, is empty for FS. |
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|`Backend.StandardSCParity` | _int_ | Parity disks set for standard storage class, is empty for FS. |
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|`Backend.RRSCData` | _int_ | Data disks set for reduced redundancy storage class, is empty for FS. |
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|`Backend.RRSCParity` | _int_ | Parity disks set for reduced redundancy storage class, is empty for FS. |
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|`Backend.Sets` | _[][]DriveInfo_ | Represents topology of drives in erasure coded sets. |
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| Param | Type | Description |
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|---|---|---|
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|`DriveInfo.UUID`| _string_ | Unique ID for each disk provisioned by server format. |
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|`DriveInfo.Endpoint` | _string_ | Endpoint location of the remote/local disk. |
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|`DriveInfo.State` | _string_ | Current state of the disk at endpoint. |
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__Example__
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```go
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serversInfo, err := madmClnt.ServerInfo()
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if err != nil {
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log.Fatalln(err)
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}
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for _, peerInfo := range serversInfo {
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log.Printf("Node: %s, Info: %v\n", peerInfo.Addr, peerInfo.Data)
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}
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```
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<a name="ServerDrivesPerfInfo"></a>
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### ServerDrivesPerfInfo() ([]ServerDrivesPerfInfo, error)
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Fetches drive performance information for all cluster nodes. Returned value is in Bytes/s.
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| Param | Type | Description |
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|---|---|---|
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|`di.Addr` | _string_ | Address of the server the following information is retrieved from. |
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|`di.Error` | _string _ | Errors (if any) encountered while reaching this node |
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|`di.DrivesPerf` | _disk.Performance_ | Path of the drive mount on above server and read, write speed. |
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| Param | Type | Description |
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|`disk.Performance.Path` | _string_ | Path of drive mount. |
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|`disk.Performance.Error` | _string_ | Error (if any) encountered while accessing this drive. |
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|`disk.Performance.WriteSpeed` | _float64_ | Write speed on above path in Bytes/s. |
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|`disk.Performance.ReadSpeed` | _float64_ | Read speed on above path in Bytes/s. |
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<a name="ServerCPULoadInfo"></a>
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### ServerCPULoadInfo() ([]ServerCPULoadInfo, error)
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Fetches CPU utilization for all cluster nodes. Returned value is in Bytes.
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| Param | Type | Description |
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|-------|------|-------------|
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|`cpui.Addr` | _string_ | Address of the server the following information is retrieved from. |
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|`cpui.Error` | _string_ | Errors (if any) encountered while reaching this node |
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|`cpui.CPULoad` | _cpu.Load_ | The load on the CPU. |
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| Param | Type | Description |
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|-------|------|-------------|
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|`cpu.Load.Avg` | _string_ | The average utilization % of the CPU measured in a 200ms interval |
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|`cpu.Load.Min` | _string_ | The minimum utilization % of the CPU measured in a 200ms interval |
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|`cpu.Load.Max` | _string_ | The maximum utilization % of the CPU measured in a 200ms interval |
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|`cpu.Load.Error` | _string_ | Error (if any) encountered while accesing the CPU info |
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<a name="ServerMemUsageInfo"></a>
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### ServerMemUsageInfo() ([]ServerMemUsageInfo, error)
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Fetches Mem utilization for all cluster nodes. Returned value is in Bytes.
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| Param | Type | Description |
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|-------|------|-------------|
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|`memi.Addr` | _string_ | Address of the server the following information is retrieved from. |
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|`memi.Error` | _string_ | Errors (if any) encountered while reaching this node |
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|`memi.MemUsage` | _mem.Usage_ | The utilitzation of Memory |
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| Param | Type | Description |
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|-------|------|-------------|
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|`mem.Usage.Mem` | _string_ | The total number of bytes obtained from the OS |
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|`mem.Usage.Error` | _string_ | Error (if any) encountered while accesing the CPU info |
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## 6. Heal operations
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<a name="Heal"></a>
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### Heal(bucket, prefix string, healOpts HealOpts, clientToken string, forceStart bool, forceStop bool) (start HealStartSuccess, status HealTaskStatus, err error)
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Start a heal sequence that scans data under given (possible empty)
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`bucket` and `prefix`. The `recursive` bool turns on recursive
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traversal under the given path. `dryRun` does not mutate on-disk data,
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but performs data validation.
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Two heal sequences on overlapping paths may not be initiated.
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The progress of a heal should be followed using the same API `Heal`
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by providing the `clientToken` previously obtained from a `Heal`
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API. The server accumulates results of the heal traversal and waits
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for the client to receive and acknowledge them using the status
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request by providing `clientToken`.
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__Example__
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``` go
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opts := madmin.HealOpts{
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Recursive: true,
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DryRun: false,
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}
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forceStart := false
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forceStop := false
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healPath, err := madmClnt.Heal("", "", opts, "", forceStart, forceStop)
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if err != nil {
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log.Fatalln(err)
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}
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log.Printf("Heal sequence started at %s", healPath)
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```
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#### HealStartSuccess structure
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| Param | Type | Description |
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|----|--------|--------|
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| s.ClientToken | _string_ | A unique token for a successfully started heal operation, this token is used to request realtime progress of the heal operation. |
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| s.ClientAddress | _string_ | Address of the client which initiated the heal operation, the client address has the form "host:port".|
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| s.StartTime | _time.Time_ | Time when heal was initially started.|
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#### HealTaskStatus structure
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| Param | Type | Description |
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|----|--------|--------|
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| s.Summary | _string_ | Short status of heal sequence |
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| s.FailureDetail | _string_ | Error message in case of heal sequence failure |
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| s.HealSettings | _HealOpts_ | Contains the booleans set in the `HealStart` call |
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| s.Items | _[]HealResultItem_ | Heal records for actions performed by server |
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#### HealResultItem structure
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| Param | Type | Description |
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|------|-------|---------|
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| ResultIndex | _int64_ | Index of the heal-result record |
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| Type | _HealItemType_ | Represents kind of heal operation in the heal record |
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| Bucket | _string_ | Bucket name |
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| Object | _string_ | Object name |
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| Detail | _string_ | Details about heal operation |
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| DiskInfo.AvailableOn | _[]int_ | List of disks on which the healed entity is present and healthy |
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| DiskInfo.HealedOn | _[]int_ | List of disks on which the healed entity was restored |
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## 7. Config operations
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<a name="GetConfig"></a>
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### GetConfig() ([]byte, error)
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Get current `config.json` of a Minio server.
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__Example__
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``` go
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configBytes, err := madmClnt.GetConfig()
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if err != nil {
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log.Fatalf("failed due to: %v", err)
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}
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// Pretty-print config received as json.
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var buf bytes.Buffer
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err = json.Indent(buf, configBytes, "", "\t")
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if err != nil {
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log.Fatalf("failed due to: %v", err)
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}
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log.Println("config received successfully: ", string(buf.Bytes()))
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```
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<a name="SetConfig"></a>
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### SetConfig(config io.Reader) error
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Set a new `config.json` for a Minio server.
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__Example__
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``` go
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config := bytes.NewReader([]byte(`config.json contents go here`))
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if err := madmClnt.SetConfig(config); err != nil {
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log.Fatalf("failed due to: %v", err)
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}
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log.Println("SetConfig was successful")
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```
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<a name="GetConfigKeys"></a>
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### GetConfigKeys(keys []string) ([]byte, error)
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Get a json document which contains a set of keys and their values from config.json.
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__Example__
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``` go
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configBytes, err := madmClnt.GetConfigKeys([]string{"version", "notify.amqp.1"})
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if err != nil {
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log.Fatalf("failed due to: %v", err)
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}
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// Pretty-print config received as json.
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var buf bytes.Buffer
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err = json.Indent(buf, configBytes, "", "\t")
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if err != nil {
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log.Fatalf("failed due to: %v", err)
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}
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log.Println("config received successfully: ", string(buf.Bytes()))
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```
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<a name="SetConfigKeys"></a>
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### SetConfigKeys(params map[string]string) error
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Set a set of keys and values for Minio server or distributed setup and restart the Minio
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server for the new configuration changes to take effect.
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__Example__
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``` go
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err := madmClnt.SetConfigKeys(map[string]string{"notify.webhook.1": "{\"enable\": true, \"endpoint\": \"http://example.com/api\"}"})
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if err != nil {
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log.Fatalf("failed due to: %v", err)
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}
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log.Println("New configuration successfully set")
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```
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## 8. IAM operations
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<a name="AddCannedPolicy"></a>
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### AddCannedPolicy(policyName string, policy string) error
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Create a new canned policy on Minio server.
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__Example__
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```
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policy := `{"Version": "2012-10-17","Statement": [{"Action": ["s3:GetObject"],"Effect": "Allow","Resource": ["arn:aws:s3:::my-bucketname/*"],"Sid": ""}]}`
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if err = madmClnt.AddCannedPolicy("get-only", policy); err != nil {
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log.Fatalln(err)
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}
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```
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<a name="AddUser"></a>
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### AddUser(user string, secret string) error
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Add a new user on a Minio server.
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__Example__
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``` go
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if err = madmClnt.AddUser("newuser", "newstrongpassword"); err != nil {
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log.Fatalln(err)
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}
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```
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<a name="SetUserPolicy"></a>
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### SetUserPolicy(user string, policyName string) error
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Enable a canned policy `get-only` for a given user on Minio server.
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__Example__
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``` go
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if err = madmClnt.SetUserPolicy("newuser", "get-only"); err != nil {
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log.Fatalln(err)
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}
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```
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<a name="ListUsers"></a>
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### ListUsers() (map[string]UserInfo, error)
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Lists all users on Minio server.
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__Example__
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``` go
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users, err := madmClnt.ListUsers();
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if err != nil {
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log.Fatalln(err)
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}
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for k, v := range users {
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fmt.Printf("User %s Status %s\n", k, v.Status)
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}
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```
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## 9. Misc operations
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<a name="SetAdminCredentials"></a>
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### SetAdminCredentials() error
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Set new credentials of a Minio setup.
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__Example__
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``` go
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err = madmClnt.SetAdminCredentials("YOUR-NEW-ACCESSKEY", "YOUR-NEW-SECRETKEY")
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if err != nil {
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log.Fatalln(err)
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}
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log.Println("New credentials successfully set.")
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```
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<a name="StartProfiling"></a>
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### StartProfiling(profiler string) error
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Ask all nodes to start profiling using the specified profiler mode
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__Example__
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``` go
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startProfilingResults, err = madmClnt.StartProfiling("cpu")
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if err != nil {
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|
log.Fatalln(err)
|
|
}
|
|
for _, result := range startProfilingResults {
|
|
if !result.Success {
|
|
log.Printf("Unable to start profiling on node `%s`, reason = `%s`\n", result.NodeName, result.Error)
|
|
} else {
|
|
log.Printf("Profiling successfully started on node `%s`\n", result.NodeName)
|
|
}
|
|
}
|
|
|
|
```
|
|
|
|
<a name="DownloadProfilingData"></a>
|
|
### DownloadProfilingData() ([]byte, error)
|
|
Download profiling data of all nodes in a zip format.
|
|
|
|
__Example__
|
|
|
|
``` go
|
|
profilingData, err := madmClnt.DownloadProfilingData()
|
|
if err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
|
|
profilingFile, err := os.Create("/tmp/profiling-data.zip")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
if _, err := io.Copy(profilingFile, profilingData); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
if err := profilingFile.Close(); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
if err := profilingData.Close(); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
log.Println("Profiling data successfully downloaded.")
|
|
```
|
|
|