Prerequisites

Learn how to collect the information you need to deploy the S3 to S3 Avro ReadyFlow, and meet other prerequisites.

For your data source and target

  • You have the two S3 buckets and their paths as source and destination for the data movement.

  • You have performed one of the following to configure access to S3 buckets:
    • You have configured access to S3 buckets with a RAZ enabled environment.

      It is a best practice to enable RAZ to control access to your object store buckets. This allows you to use your CDP credentials to access S3 buckets, increases auditability, and makes object store data ingest workflows portable across cloud providers.
      1. Ensure that Fine-grained access control is enabled for your DataFlow environment.
      2. From the Ranger UI, navigate to the S3 repository.
      3. Create a policy to govern access to the S3 bucket and path used in your ingest workflow.
      4. Add the machine user that you have created for your ingest workflow to the policy you just created.

      For more information, see Creating Ranger policy to use in RAZ-enabled AWS environment.

    • You have configured access to S3 buckets using ID Broker mapping.

      If your environment is not RAZ-enabled, you can configure access to S3 buckets using ID Broker mapping.
      1. Access IDBroker mappings.
        1. To access IDBroker mappings in your environment, click Actions > Manage Access.
        2. Choose the IDBroker Mappings tab where you can provide mappings for users or groups and click Edit.
      2. Add your CDP Workload User and the corresponding AWS role that provides write access to your folder in your S3 bucket to the Current Mappings section by clicking the blue + sign.
      3. Click Save and Sync.
  • You have created a Streams Messaging cluster in CDP Public Cloud to host your Schema Registry.

    For information on how to create a Streams Messaging cluster, see Creating your First Streams Messaging Cluster in CDP Public Cloud.

  • You have created a schema for your data and have uploaded it to the Schema Registry in the Streams Messaging cluster.

    For information on how to create a new schema, see Creating a new schema. For example:
    
    {
       "type":"record",
       "name":"SensorReading",
       "namespace":"com.cloudera.example",
       "doc":"This is a sample sensor reading",
       "fields":[
          {
             "name":"sensor_id",
             "doc":"Sensor identification number.",
             "type":"int"
          },
          {
             "name":"sensor_ts",
             "doc":"Timestamp of the collected readings.",
             "type":"long"
          },
          {
             "name":"sensor_0",
             "doc":"Reading #0.",
             "type":"int"
          },
          {
             "name":"sensor_1",
             "doc":"Reading #1.",
             "type":"int"
          },
          {
             "name":"sensor_2",
             "doc":"Reading #2.",
             "type":"int"
          },
          {
             "name":"sensor_3",
             "doc":"Reading #3.",
             "type":"int"
          }
       ]
    }
    
  • You have the Schema Registry Host Name.

    1. From the Management Console, go to Data Hub Clusters and select the Streams Messaging cluster you are using.
    2. Navigate to the Hardware tab to locate the Master Node FQDN. Schema Registry is always running on the Master node, so copy the Master node FQDN.
  • You have assigned the CDP Workload User read-access to the schema.

    1. Navigate to Management Console > Environments, and select the environment where you have created your cluster.
    2. Select Ranger. You are redirected to the Ranger Service Manager page.
    3. Select your Streams Messaging cluster under the Schema Registry folder.
    4. Click Add New Policy.
    5. On the Create Policy page, give the policy a name, specify the schema details, add the user, and assign the Read permission.

For DataFlow

  • You have enabled DataFlow for an environment.

    For information on how to enable DataFlow for an environment, see Enabling DataFlow for an Environment.

  • You have created a Machine User to use as the CDP Workload User.

  • You have given the CDP Workload User the EnvironmentUser role.
    1. From the Management Console, go to the environment for which DataFlow is enabled.
    2. From the Actions drop down, click Manage Access.
    3. Identify the user you want to use as a Workload User.
    4. Give that user EnvironmentUser role.
  • You have synchronized your user to the CDP Public Cloud environment that you enabled for DataFlow.

    For information on how to synchronize your user to FreeIPA, see Performing User Sync.

  • You have granted your CDP user the DFCatalogAdmin and DFFlowAdmin roles to enable your user to add the ReadyFlow to the Catalog and deploy the flow definition.
    1. Give a user permission to add the ReadyFlow to the Catalog.
      1. From the Management Console, click User Management.
      2. Enter the name of the user or group you wish to authorize in the Search field.
      3. Select the user or group from the list that displays.
      4. Click Roles > Update Roles.
      5. From Update Roles, select DFCatalogAdmin and click Update.
    2. Give your user or group permission to deploy flow definitions.
      1. From the Management Console, click Environments to display the Environment List page.
      2. Select the environment to which you want your user or group to deploy flow definitions.
      3. Click Actions > Manage Access to display the Environment Access page.
      4. Enter the name of your user or group you wish to authorize in the Search field.
      5. Select your user or group and click Update Roles.
      6. Select DFFlowAdmin from the list of roles.
      7. Click Update Roles.