以下是一个使用Ansible playbook在Kubernetes上安装Minio的示例：

---
- name: Deploy Minio on Kubernetes using Helm
  hosts: k8s_cluster
  become: true

  vars:
    minio_namespace: default   # 定义Minio部署的namespace名称
    minio_release_name: my-minio   # 定义Helm release名称
    storage_class_name: nfs   # 指定要使用的存储类别名称
    pvc_name: minio-pvc   # 定义PVC名称
    pv_name: minio-pv   # 定义PV名称

  tasks:
  - name: Create PV for Minio data storage 
    k8s:
      state: present
      kind: PersistentVolume
      api_version: v1
      definition:
        apiVersion: v1
        kind: PersistentVolume
        metadata:
          name: "{{ pv_name }}"
        spec:
          capacity:
            storage: "10Gi"
          accessModes:
            - ReadWriteMany 
          nfs:
            path: /mnt/data/minio  
            server: x.x.x.x   # 替换为您NFS服务器IP地址 
          persistentVolumeReclaimPolicy : Retain

  - name: Create PVC for Minio data storage 
    k8s:
      state: present 
      namespace : "{{ minio_namespace }}"
      kind : PersistentVolumeClaim 
      definition : 
        apiVersion : v1 
        kind : PersistentVolumeClaim 
        metadata : 
          name : "{{ pvc_name }}"   
        spec :
          accessModes :
            - ReadWriteMany      
          resources :
            requests :
              storage : "10Gi"    
          selector :
            matchLabels :
              app : my-minio 

  - name: Install Minio using Helm chart 
    helm:
      name: "{{ minio_release_name }}"
      chart_repo: minio/minio
      release_namespace: "{{ minio_namespace }}"
      chart_version: 9.0.2  
      state: present 
      values_files : "minio_values.yaml"
      wait : yes

  - name: Configure Minio access policy 
    k8s:
      state : present
      namespace : "{{ minio_namespace }}"
      definition :
        apiVersion: v1
        kind: ConfigMap
        metadata:
          name: my-minio-policy
        data:
          read_only.json: |
            {
              "Version": "2012-10-17",
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": [
                    "s3:GetObject",
                    "s3:GetObjectAcl",
                    "s3:GetObjectVersion",
                    "s3:GetObjectTagging"
                  ],
                  "Resource": [
                    "arn:aws:s3:::*/*"
                  ]
                }
              ]
            }
          read_write.json: |
            {
              "Version": "2012-10-17",
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": [
                    "*"
                  ],
                  "Resource": [
                    "*"
                  ]
                }
              ]
            }

  - name : Attach the policy to MinIO buckets 
    k8s_raw:
       state : present
       resource_definition :
         apiVersion : v1
         kind : ConfigMap
         metadata :
           name : my-minio-policy-map-buckets  
           namespace : "{{ minio_namespace }}"
         data :
           policies.json |-
             [{"bucket":"mybucket","policyReadOnlyPath":"/tmp/read_only.json","policyReadWritePath":"/tmp/read_write.json"}]        

说明：

• 该playbook中定义了以下变量：minio_namespace（Minio部署的namespace名称）、minio_release_name（Helm release名称）、storage_class_name（要使用的存储类别名称）、pvc_name（PVC名称）和 pv_name（PV名称）。
• playbook中先创建一个名为“minio-pv”的PersistentVolume，然后创建一个名为“minio-pvc”的PersistentVolumeClaim，并将其绑定到指定的PV上。
• 使用Helm安装Minio。在这里，我们使用了values.yaml文件来配置Minio Helm chart。如果需要自定义值，请修改此文件并将其保存为“minio_values.yaml”。
• playbook还配置了Minio访问策略，并将其附加到名为“mybucket”的桶上。

请注意，在运行该playbook之前，请确保您的Kubernetes集群已经正常运行并且已正确设置PV/PVC。