怎样通过k8s部署superset镜像？

步骤如下：

1. 安装k8s

2. 部署数据库

本例以MySQL为例，可通过以下命令在k8s中创建一个MySQL实例：

   kubectl create -f mysql.yaml

其中mysql.yaml的内容如下：

   apiVersion: v1
   kind: Service
   metadata:
     name: mysql
     labels:
       app: mysql
   spec:
     ports:
     - name: mysql
       port: 3306
     selector:
       app: mysql
   ---
   apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: mysql
   spec:
     selector:
       matchLabels:
         app: mysql
     replicas: 1
     template:
       metadata:
         labels:
           app: mysql
       spec:
         containers:
         - name: mysql
           image: mysql
           env:
           - name: MYSQL_ROOT_PASSWORD
             value: password
           ports:
           - containerPort: 3306
           volumeMounts:
           - name: mysql-persistent-storage
             mountPath: /var/lib/mysql
         volumes:
         - name: mysql-persistent-storage
           persistentVolumeClaim:
             claimName: mysql-pv-claim

3. 部署superset

可以通过以下命令在k8s中创建一个superset实例：

   kubectl create -f superset.yaml

其中superset.yaml的内容如下：

   apiVersion: v1
   kind: Service
   metadata:
     name: superset
     labels:
       app: superset
   spec:
     ports:
     - name: http
       port: 8088
     selector:
       app: superset
   ---
   apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: superset
   spec:
     selector:
       matchLabels:
         app: superset
     replicas: 1
     template:
       metadata:
         labels:
           app: superset
       spec:
         containers:
         - name: superset
           image: amancevice/superset
           env:
           - name: SUPERSET_CONFIG
             value: /etc/superset/superset_config.py
           - name: SUPERSET_HOME
             value: /etc/superset
           - name: SQLALCHEMY_DATABASE_URI
             value: mysql://root:password@mysql:3306/superset
           ports:
           - containerPort: 8088
           volumeMounts:
           - name: superset-persistent-storage
             mountPath: /etc/superset
         volumes:
         - name: superset-persistent-storage
           persistentVolumeClaim:
             claimName: superset-pv-claim

4. 访问superset

在浏览器中输入`http://localhost:8088`，即可访问superset。