类似 Oracle 的重量级的数据库都是不建议上云的，对硬件要求苛刻；不过重量级的数据库上云也是趋势，希望 Oralce 赶快改架构；

使用的 oralce 镜像是来自 registry.cn-hangzhou.aliyuncs.com/helowin/oracle_11g

apiVersion: apps/v1beta2
kind: Deployment
metadata:
  name: oracle
spec:
  selector:
    matchLabels:
      k8s-app: oracle
  replicas: 1
  template:
    metadata:
      labels:
        k8s-app: oracle
        app: oracle
    spec:
      containers:
      - name: oracle
        image: registry.cn-hangzhou.aliyuncs.com/fengxin58/oracle:11.2
        ports:
        - containerPort: 1521
apiVersion: v1
kind: Service
metadata:
  name: oracle
spec:
  ports:
  - name: oracle
    nodePort: 31521
    port: 1521
    protocol: TCP
    targetPort: 1521
  selector:
    k8s-app: oracle
  type: LoadBalancer

使用上面配置一个 serice ，阿里云会自动创建一个负载均衡器，然后开放 targetPort 指定的 1521端口 。

$ kubectl exec -it oracle-6495bd4bd6-kh5ct /bin/bash
$ source /home/oracle/.bash_profile
$ sqlplus /nolog
SQL> connect /as sysdba
SQL> create user test identified by test;
SQL> grant connect,resource,dba to test;
SQL> select instance_name from V$instance;
SQL> show parameter service;