Set up Openflow - Snowflake Deployment: Create Runtime role

Openflow - Snowflake Deployment requires the creation of a number of resources which are specific not to a deployment but to a specific runtime. Typically such resources include:

  • Creation of Runtime specific Runtime role

  • Creation of Runtime specific network rules and External Access Integrations (EAI)

This topic describes the creation of these resources.

  1. Create a Runtime Role and associated privileges to write data to Snowflake Runtime Role for Runtimes on Snowflake Deployment Section

  2. Associate Runtime Role. See Runtime Role for Runtimes in the Snowflake Deployment Section.

  3. Create External Access Integrations and associate them to Runtimes. See Creating External Access Integrations

  4. When Outbound PrivateLink connectivity is required to connect to a private system using SPCS Egress.

Create a runtime role

When creating and editing Openflow Runtimes, Runtime Owners will have the ability to associate a role with the Runtime. This role will be used for flows that execute within the Runtime. For more information about Runtime Roles, see What is a runtime role?.

Note

Reminder, the Openflow Data engineer role is the role used in the Openflow UI to create or access runtimes after the Openflow Admin completes the initial deployment setup steps.

As ACCOUNTADMIN, you’ll grant the Runtime role to the Data Engineer’s role so that they are authorized to set this role on the Runtime. This assures that you’re following the principle of least privilege in terms of what the Runtime service is authorized to do.

Creating a runtime role is a prerequisite for creating a Runtime and involves the following steps:

  1. Create the role itself

  2. Grant the role access to the warehouse used by the Runtime.

  3. Grant the role access to the Snowflake objects used by the Runtime.

  4. Grant the role access to the External Access Integrations used by the Runtime.

To create a runtime role:

  1. create the required runtime role

    Note

    <RUNTIMENAME> denotes the name of the associated runtime.

USE ROLE ACCOUNTADMIN;

CREATE ROLE IF NOT EXISTS OPENFLOW_DATA_ENGINEER;
CREATE ROLE IF NOT EXISTS OPENFLOW_RUNTIME_ROLE_<RUNTIMENAME>;

GRANT ROLE OPENFLOW_RUNTIME_ROLE_<RUNTIMENAME> TO ROLE OPENFLOW_DATA_ENGINEER;
Copy

  1. Allow the runtime role to use an existing warehouse that you are planning to use for data ingestion. Use this warehouse later when configuring your connectors for runtimes where you will be using this runtime role.

    GRANT USAGE, OPERATE ON WAREHOUSE <OPENFLOW_INGEST_WAREHOUSE> TO ROLE OPENFLOW_RUNTIME_ROLE_<RUNTIMENAME>;
    Copy

  2. Allow the runtime role to use, create or otherwise access Snowflake objects.

    Note

    Depending on the Openflow connector being created the required underlying objects will vary. The example below is for illustration purposes only.

    GRANT USAGE ON DATABASE <OPENFLOW_SPCS_DATABASE> TO ROLE OPENFLOW_RUNTIME_ROLE_<RUNTIMENAME>;
GRANT USAGE ON SCHEMA <OPENFLOW_SPCS_SCHEMA> TO ROLE OPENFLOW_RUNTIME_ROLE_<RUNTIMENAME>;
    Copy

Creating Network Rules and External Access Integrations

Snowflake’s security model provides secure access to specific endpoints and systems external to Snowflake using network policies.

Two key aspects of network policies are Network rules and External Access Integrations (EAI). Each of which is used to provide secure access to external resources required by the runtime.

There are three steps that are required to create network rules and external access integrations:

  1. Create the network rule, grouping the network identifiers into logical areas.

  2. Create the external access integration (EAI), specifying the list of network rules and assuring the Runtime Role has USAGE on the EAI.

  3. Associate the EAI with the Runtime in the Openflow UI when creating Runtimes

To create the required network rule and EAI, perform the following steps:

Note

These examples use RUNTIME_NAME as a placeholder for the name of the Runtime being created.

  1. Create an appropriate network rule. See CREATE NETWORK RULE for more information.

    Note

    <OPENFLOW_DATABASE> denotes the name of the database that will contain the network rule. Snowflake suggests creating a specific database for network rules and external access integrations related to Openflow.

    USE DATABASE <OPENFLOW_DATABASE>;

CREATE OR REPLACE NETWORK RULE OPENFLOW_<RUNTIME_NAME>_NETWORK_RULE
    MODE = EGRESS
    TYPE = HOST_PORT
    VALUE_LIST = ('comma separated list of host:port pairs');
    Copy

  2. Create the associated external integration. See CREATE EXTERNAL ACCESS INTEGRATION for more information.

    USE ROLE ACCOUNTADMIN;

CREATE OR REPLACE EXTERNAL ACCESS INTEGRATION OPENFLOW_<RUNTIME>_EAI
   ALLOWED_NETWORK_RULES = (OPENFLOW_<RUNTIME_NAME>_NETWORK_RULE)
   ENABLED = TRUE;
    Copy

  3. Grant access to the EAI to the previously created runtime role.

    GRANT USAGE ON INTEGRATION OPENFLOW_<RUNTIME_NAME>_EAI TO ROLE OPENFLOW_RUNTIME_ROLE_<RUNTIME_NAME>;
    Copy

Creating Snowpipe Streaming External Access Integrations

When using any of the following connector types: Database CDC, SaaS, Streaming, Slack, you need to create an External Access Integration to ensure connectivity to Snowpipe Streaming.

To create a Snowpipe Streaming External Access Integration, perform the following steps:

  1. Create a temp stage to determine the prefix needed for S3 bucket access from Openflow.

    CREATE TEMPORARY STAGE my_int_stage
ENCRYPTION = (TYPE = 'SNOWFLAKE_SSE');
    Copy

  2. Retrieve host name prefix from temporary stage.

    SELECT GET_PRESIGNED_URL(@my_int_stage, '/', 3600);
    Copy

    For example if https://example-customer-stage.s3.us-west-2.amazonaws.com was returned, the <PREFIX> would be example-customer-stage.

  3. Create network rule with <PREFIX>.s3.amazonaws.com:443 AND <PREFIX>.s3.

    CREATE OR REPLACE NETWORK RULE SSV1
  MODE = EGRESS
  TYPE = HOST_PORT
   VALUE_LIST = ('<PREFIX>.s3.amazonaws.com:443', '<PREFIX>.s3.us-west-2.amazonaws.com:443');
    Copy

  4. Create EAI for S3 Network rule

    CREATE OR REPLACE EXTERNAL ACCESS INTEGRATION OPENFLOW_SSV1_EAI
   ALLOWED_NETWORK_RULES = (SSV1)
   ENABLED = TRUE;
    Copy

  5. Grant usage on EAI to runtime role

    GRANT USAGE ON INTEGRATION OPENFLOW_SSV1_EAI TO ROLE OPENFLOW_RUNTIME_ROLE_<RUNTIME_NAME>;
    Copy

Note

When creating the associated runtime, you must attach this EAI.

Next steps

Create runtime

Language: English