通过K8S部署对象存储MinIO

MinIO 是全球领先的对象存储先锋，以 Apache License v2.0 发布的对象存储服务器，是为云应用和虚拟机而设计的分布式对象存储服务器。在标准硬件上，读/写速度上高达183GB/s和171GB/s。它与 Amazon S3 云存储服务兼容。 它最适用于存储非结构化数据，如照片、视频、日志文件、备份和容器/虚拟机映像。 对象的大小可以从几KB 到最大5TB。

• 对象存储，兼容Amazon S3协议
• 安装运维相对简单，开箱即用
• 后端除了本地文件系统，还支持多种存储系统，目前已经包括 OSS
• 原生支持bucket事件通知机制
• 可通过多节点集群方式，支持一定的高可用和数据容灾
• 有WEB管理界面和CLI，可以用于测试或者管理
• 公开bucket中的数据可以直接通过HTTP获取

MinIO是一个非常轻量的服务,可以很简单的和其他应用的结合，类似 NodeJS, Redis 或者 MySQL。

MinIO支持多种灵活的部署方式，支持Docker Compose、Docker Swam、Kubernetes等，详见官网：https://docs.min.io/docs/minio-deployment-quickstart-guide.html或者https://min.io/download#/linux

这里着重介绍K8S下部署

1、standalone模式

apiVersion: v1
kind: PersistentVolume
metadata:
  labels:
    app: minio
    release: minio
  name: minio
  namespace: default
spec:
  accessModes:
  - ReadWriteOnce
  capacity:
    storage: 10Gi
  volumeMode: Filesystem
  hostPath:
    path: /mnt/minio
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  # This name uniquely identifies the PVC. Will be used in deployment below.
  name: minio-pv-claim
  labels:
    app: minio-storage-claim
spec:
  # Read more about access modes here: https://kubernetes.io/docs/user-guide/persistent-volumes/#access-modes
  accessModes:
    - ReadWriteOnce
  resources:
    # This is the request for storage. Should be available in the cluster.
    requests:
      storage: 10Gi
  # Uncomment and add storageClass specific to your requirements below. Read more https://kubernetes.io/docs/concepts/storage/persistent-volumes/#class-1
  #storageClassName:
---
apiVersion: apps/v1
kind: Deployment
metadata:
  # This name uniquely identifies the Deployment
  name: minio-deployment
spec:
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: minio
  template:
    metadata:
      labels:
        # Label is used as selector in the service.
        app: minio
    spec:
      # Refer to the PVC created earlier
      volumes:
      - name: storage
        persistentVolumeClaim:
          # Name of the PVC created earlier
          claimName: minio-pv-claim
      containers:
      - name: minio
        # Pulls the default MinIO image from Docker Hub
        image: minio/minio
        args:
        - server
        - /storage
        env:
        # MinIO access key and secret key
        - name: MINIO_ACCESS_KEY
          value: "admin123"
        - name: MINIO_SECRET_KEY
          value: "admin123"
        ports:
        - containerPort: 9000
        # Mount the volume into the pod
        volumeMounts:
        - name: storage # must match the volume name, above
          mountPath: "/storage"
---
apiVersion: v1
kind: Service
metadata:
  name: minio-service
spec:
  type: NodePort
  ports:
    - port: 9000
      targetPort: 9000
      protocol: TCP
  selector:
    app: minio

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由于service采用NodePort类型，通过主机IP:32593访问web

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2、distributed模式

apiVersion: v1
kind: Service
metadata:
  name: minio
  labels:
    app: minio
spec:
  clusterIP: None
  ports:
    - port: 9000
      name: minio
  selector:
    app: minio
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: minio
spec:
  serviceName: minio
  replicas: 4
  selector:
    matchLabels:
      app: minio
  template:
    metadata:
      labels:
        app: minio
    spec:
      containers:
      - name: minio
        env:
        - name: MINIO_ACCESS_KEY
          value: "admin123"
        - name: MINIO_SECRET_KEY
          value: "admin123"
        image: minio/minio
        args:
        - server
        - http://minio-{0...3}.minio.default.svc.cluster.local/data
        ports:
        - containerPort: 9000
        # These volume mounts are persistent. Each pod in the PetSet
        # gets a volume mounted based on this field.
        volumeMounts:
        - name: data
          mountPath: /data
  # These are converted to volume claims by the controller
  # and mounted at the paths mentioned above.
  volumeClaimTemplates:
  - metadata:
      name: data
    spec:
      accessModes:
        - ReadWriteOnce
      resources:
        requests:
          storage: 10Gi
      # Uncomment and add storageClass specific to your requirements below. Read more https://kubernetes.io/docs/concepts/storage/persistent-volumes/#class-1
      #storageClassName:
---
apiVersion: v1
kind: Service
metadata:
  name: minio-service
spec:
  type: NodePort
  ports:
    - port: 9000
      targetPort: 9000
      protocol: TCP
  selector:
    app: minio

分布式部署，实例数至少4个，所以需要另外创建4个pv

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