Object Storage

Object Storage is Sealos' built-in object storage service, which is primarily used to store and manage unstructured data.

Currently, Object Storage has the following features:

Upload files to bucket.
Download files from bucket.
Expose the access permission of the bucket.
Use SDK to access bucket.
Monitors bucket resource metrics.
Static host.

Quick start

Upload files to bucket

Open the Sealos desktop and click on Object Storage.

Create a bucket.

Set bucket name to test and permission to private.

Bucket Permissions Explanation:

private: Private bucket, no public access.
publicRead: Shared bucket with public read access.
publicReadwrite: Shared bucket with public read and write access.

Bucket is created successfully.

Upload file.

File uploaded successfully.

Expose the access permission of the bucket

Click the Edit button.

Set Bucket Permission to publicRead and click the Application button.

Copy file link.

Paste to browser address bar to access files.

View the access key configuration

An Object Storage user consists of a unique access key (username) and corresponding secret key (password). Internal is the internal access address of Object Storage, and External is the external access address of Object Storage.

Use SDK to access bucket

The SDK requires three parameters to access bucket: AccessKey, SecretKey, and Endpoint (Internal or External). If the Region parameter is required, us-east-1 is used by default.

Go Client SDK

Detailed documentation reference: https://min.io/docs/minio/linux/developers/go/API.html

Example: Use the Go Client SDK to upload the style.css file to the sv3dd7u4-test bucket, and set the endpoint to the external address. If the service is deployed in the K8s cluster, you can change the endpoint to the internal address.

package main

import (
    "context"
    "fmt"
    "log"
    "os"
)
import "github.com/minio/minio-go/v7"
import "github.com/minio/minio-go/v7/pkg/credentials"

func main() {
    endpoint := "objectstorageapi.xxx.xxx.xxx"
    accessKey := "xxxxxxxx"
    secretKey := "xxxxxxxxxxxxxxxx"
    // init minio client
    minioClient, err := minio.New(endpoint, &minio.Options{
        Creds: credentials.NewStaticV4(accessKey, secretKey, ""),
    })
    if err != nil {
        log.Fatalln(err)
    }
    // get local file
    file, err := os.Open("./style.css")
    if err != nil {
        fmt.Println(err)
        return
    }
    defer file.Close()

    fileStat, err := file.Stat()
    if err != nil {
        fmt.Println(err)
        return
    }
    // put object
    uploadInfo, err := minioClient.PutObject(context.Background(), "sv3dd7u4-test", "style.css", file, fileStat.Size(), minio.PutObjectOptions{ContentType: "text/css"})
    if err != nil {
        fmt.Println(err)
        return
    }
    fmt.Println("Successfully uploaded bytes: ", uploadInfo)
}

File uploaded successfully.

Java Client SDK

Detailed documentation reference: https://min.io/docs/minio/linux/developers/java/API.html

Example: Use the Java Client SDK to upload the style1.css file to the sv3dd7u4-test bucket, and set the endpoint to the external address. If the service is deployed in the K8s cluster, you can change the endpoint to the internal address.

<dependency>
    <groupId>io.minio</groupId>
    <artifactId>minio</artifactId>
    <version>8.5.9</version>
</dependency>

package org.example;

import io.minio.MinioClient;
import io.minio.UploadObjectArgs;

public class FileUploader {
    public static void main(String[] args) throws Exception {

        MinioClient minioClient =
                MinioClient.builder()
                        .endpoint("https://objectstorageapi.xxx.xxx.xxx")
                        .credentials("xxxxxxxx", "xxxxxxxxxxxxxxxx")
                        .build();


        minioClient.uploadObject(
                UploadObjectArgs.builder()
                        .bucket("sv3dd7u4-test")
                        .object("style1.css")
                        .filename("src/main/java/org/example/style1.css")
                        .build());

        System.out.println("Successfully uploaded bytes.");
    }
}