云保管策略和集群的RDS实例数量

云保管策略和集群的RDS实例数量会根据具体的云平台和代码编程语言有所不同。以下是一个使用Python和AWS SDK（Boto3）的示例，用于获取云保管策略和集群的RDS实例数量：

import boto3

def get_retention_policies(cluster_id):
    client = boto3.client('rds')
    response = client.describe_db_clusters(DBClusterIdentifier=cluster_id)
    retention_policies = response['DBClusters'][0]['BackupRetentionPeriod']
    return retention_policies

def get_instance_count(cluster_id):
    client = boto3.client('rds')
    response = client.describe_db_clusters(DBClusterIdentifier=cluster_id)
    instance_count = len(response['DBClusters'][0]['DBClusterMembers'])
    return instance_count

# 示例用法
cluster_id = 'your-cluster-id'
retention_policies = get_retention_policies(cluster_id)
instance_count = get_instance_count(cluster_id)

print("云保管策略：", retention_policies)
print("RDS实例数量：", instance_count)

以上示例使用AWS SDK（Boto3）来获取指定集群的云保管策略和RDS实例数量。您需要将your-cluster-id替换为您自己的集群ID。请确保您已经正确安装了AWS SDK并配置了正确的凭证。