Activate Realtime Compute for Apache Flink and create a project

Activate Realtime Compute for Apache Flink in exclusive mode and create a cluster and project

1. Activate Realtime Compute for Apache Flink in exclusive mode.
   1. Log on to the Realtime Compute for Apache Flink console.
   2. Click Buy Now.
   3. Enter configuration information, such as the region, cluster configuration, and subscription duration.
   4. Click Buy Now.
      Note For more information about the cluster configuration, see Specification selection.
   5. Read and select I have read and agree to Realtime Compute Exclusive Mode (Subscription) Agreement of Service.
   6. Click Pay.
   7. Click Pay.
2. Create a cluster.
   1. After you complete the payment, click Console.
   2. On the Clusters page, click Create Cluster.
      Note If you have not created a project for an order, a red number is displayed in the upper-right corner of Create Cluster on the Clusters page. The number is the number of orders for which you have not created a project.
   3. Specify Order ID and click Next.
   4. Enter Cluster Name and Cluster Remarks, and then click Next.
   5. In the Cluster Settings step, enter configuration information and click Next.
      • OSS Bucket

        You can upload UDF packages for a Realtime Compute for Apache Flink cluster in exclusive mode. To ensure data security, Realtime Compute for Apache Flink stores the UDF packages in an Object Storage Service (OSS) bucket. You must specify an existing OSS bucket. If you do not have an OSS bucket, create one first. For more information about how to create an OSS bucket, see Create buckets.

        When you create an OSS bucket, you must specify Standard for Storage Class. We recommend that you specify Private for Access Control List (ACL). Do not select Public Read.
      • VPC

        If you have VPCs, specify a VPC for Realtime Compute for Apache Flink. If you do not have a VPC, activate the Alibaba Cloud VPC service first. For more information about how to activate the VPC service, see Plan and design a VPC.

        When you create a VPC, make sure that:

        • Sufficient Elastic Compute Service (ECS) instances are available in the VPC. For more information about how to create an ECS instance, see Create an instance by using the wizard.
        • The number of available IP addresses in a VSwitch is greater than or equal to the number of nodes in a Realtime Compute for Apache Flink cluster. For more information, see View the nodes of a Realtime Compute for Apache Flink cluster and Create a VSwitch.
      • Zone
        After you properly configure the VPC, the system automatically displays the available zones.

        Note No zone or VSwitch is available in the following scenarios:

        • ECS instances in the zone are insufficient. For more information about how to add an ECS instance, see Create an instance by using the wizard.
        • The number of available IP addresses in the selected VSwitch is less than the number of nodes in a Realtime Compute for Apache Flink cluster. For more information, see View the nodes of a Realtime Compute for Apache Flink cluster and Create a VSwitch.
   6. In the Confirm step, click Create.

      When you create a cluster, it takes about half an hour for the cluster status to change from Starting to Running. If the cluster status does not change after a long period of time,submit a ticket.

      Note After you activate Realtime Compute for Apache Flink in exclusive mode, Realtime Compute for Apache Flink creates a security group in your VPC and applies for an elastic network interface (ENI). For more information, see ENI overview. Do not delete the security group or ENI.
3. Create a project.
   1. Choose Cluster Management > Clusters. Find the cluster for which you want to create a project and click Create Project in the Actions column.
   2. In the Create Project dialog box, configure Project Name, Project Description, and Specified CUs.
   3. Click OK.