How Do I Configure Kubernetes Storage With Minio?

Introduction

In this guide, we will explore how to configure Kubernetes storage using Minio as the backend. Minio is a high-performance, distributed object storage system that is compatible with Amazon S3. It is ideal for storing unstructured data such as photos, videos, log files, backups, and container images. The objective is to create a StorageClass in Kubernetes that utilizes Minio, assuming you already have a Minio instance running in your cluster.

Step-by-Step Explanation

Below is a step-by-step process to set this up:

import * as pulumi from "@pulumi/pulumi";
import * as kubernetes from "@pulumi/kubernetes";

// Define the Minio Service
const minio = new kubernetes.core.v1.Service("minio", {
    metadata: {
        name: "minio",
        namespace: "default",
    },
    spec: {
        selector: {
            app: "minio",
        },
        ports: [{
            port: 9000,
            targetPort: 9000,
        }],
    },
});
// Define the Minio Deployment
const minioDeployment = new kubernetes.apps.v1.Deployment("minio", {
    metadata: {
        name: "minio",
        namespace: "default",
        labels: {
            app: "minio",
        },
    },
    spec: {
        replicas: 1,
        selector: {
            matchLabels: {
                app: "minio",
            },
        },
        template: {
            metadata: {
                labels: {
                    app: "minio",
                },
            },
            spec: {
                containers: [{
                    name: "minio",
                    image: "minio/minio:latest",
                    args: [
                        "server",
                        "/data",
                    ],
                    ports: [{
                        containerPort: 9000,
                    }],
                    env: [
                        {
                            name: "MINIO_ACCESS_KEY",
                            value: "minioadmin",
                        },
                        {
                            name: "MINIO_SECRET_KEY",
                            value: "minioadmin",
                        },
                    ],
                }],
            },
        },
    },
});
// Define the StorageClass
const minioStorageClass = new kubernetes.storage.v1.StorageClass("minio", {
    metadata: {
        name: "minio-storage-class",
    },
    provisioner: "minio.min.io/bucket",
    parameters: {
        bucket: "k8s-storage",
        region: "us-east-1",
        endpoint: "http://minio.default.svc.cluster.local:9000",
        accessKey: "minioadmin",
        secretKey: "minioadmin",
        secure: "false",
    },
    reclaimPolicy: "Delete",
});
export const serviceName = minio.metadata.apply(metadata => metadata.name);
export const storageClassName = minioStorageClass.metadata.apply(metadata => metadata.name);

Explanation of the Code

Provider Configuration: This sets up the connection to your Kubernetes cluster.
Minio Service: This service exposes the Minio deployment within the cluster, allowing other services to interact with it.
Minio Deployment: This deployment runs the Minio instance in your Kubernetes cluster.
StorageClass: A custom StorageClass is defined to specify Minio as the storage provisioner, allowing dynamic provisioning of storage resources.
Outputs: The code exports the Minio service name and StorageClass name for use in other parts of your application.

Key Points

Minio serves as a high-performance object storage solution within a Kubernetes cluster.
The StorageClass allows Kubernetes to dynamically provision storage using Minio.
The example assumes a pre-existing Minio instance within the cluster.

Conclusion

By following this guide, you have successfully configured Kubernetes storage using Minio. This setup allows seamless interaction between Kubernetes and Minio, enabling dynamic storage provisioning. Minio’s compatibility with S3 makes it a versatile choice for cloud-native storage solutions.

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