Installing and configuring the connector with Snowsight¶

This topic provides information on installing and configuring the Snowflake Connector for ServiceNow®V2 through Snowsight.

Installing the Snowflake Connector for ServiceNow®V2¶

The following procedure describes how to install the connector:

Sign in to Snowsight as a user with the ACCOUNTADMIN role.
In the navigation menu, select Data Products » Marketplace.
Search for the Snowflake Connector for ServiceNow®V2, then select the tile for the connector.
In the page for the Snowflake Connector for ServiceNow®V2, select Get.

This displays a dialog that you use to begin the initial part of the installation process.

In the dialog configure the following:
1. In the Warehouse used for installation field, select the warehouse that you want to use for installing the connector.
  
  Note
  
  This is not the same warehouse that is used by the connector to synchronize data from ServiceNow®. In a later step, you will create a separate warehouse for this purpose.
2. Optionally, under Options » Application name you can change the name of the application.
3. Select Get.
A dialog appears with the notification: Successfully Installed. To continue configuration, select Configure.

The dialog closes, and the Snowflake Connector for ServiceNow®V2 page displays the UI for configuring and managing the connector.

Configuring the Snowflake Connector for ServiceNow®V2¶

Sign in to Snowsight as a user with the ACCOUNTADMIN role.
In the navigation menu, select Data Products » Apps.
Search for the Snowflake Connector for ServiceNow®V2, then select it. You will be now moved to the installation wizard page, that will take you through the configuration process.

Below are listed application’s configuration steps:

Configure¶

In this dialog, fill in the following fields:

Field	Description
Warehouse	Identifier for a dedicated virtual warehouse for the connector. Specify a name that is unique for your account. The name of the warehouse must be a valid object identifier. The configuration process creates a new `Large` warehouse or reuses a warehouse with the specified name.
Destination Database	Identifier for database that will contain the schema with the tables for the ServiceNow® data in Snowflake. Specify a name that is unique for your account. The name of the database must be a valid object identifier. The configuration process creates or reuses a database with the specified name.
Destination Schema	Identifier for a schema that will contain the ServiceNow® data in Snowflake. The Snowflake Connector for ServiceNow®V2 ingests ServiceNow® data into tables in this schema. Specify a name that is unique within the selected database. The name of the schema must be a valid object identifier. The configuration process creates or reuses a schema with the specified name.
Role	Identifier for a new custom role for the connector. This role will be granted the DATA_READER application role. Specify a name that is unique for your account. The name of the role must be a valid object identifier. The configuration process creates a new role with the specified name.

Note

By default, the fields are set to the names of objects that are created when you configure the connector. Snowflake recommends using new objects for these fields. However if needed, you can specify the names of existing objects, (for example if reinstalling the connector).

Attention

Make sure the warehouse is able to execute a query for at least 3 hours. It’s affected by a parameter value that can be set both on the warehouse used by the connector and on the account (account’s value takes precedence). To check the current values run:

SHOW PARAMETERS LIKE 'STATEMENT_TIMEOUT_IN_SECONDS' FOR ACCOUNT;
SHOW PARAMETERS LIKE 'STATEMENT_TIMEOUT_IN_SECONDS' FOR WAREHOUSE <connector_warehouse>;

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If both values are at least 10800 (i.e. 3 hours), then no change is needed. Otherwise, run as necessary:

ALTER ACCOUNT SET STATEMENT_TIMEOUT_IN_SECONDS = 10800;
ALTER WAREHOUSE <connector_warehouse> SET STATEMENT_TIMEOUT_IN_SECONDS = 10800;

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If the proper timeout is not provided, then data ingestion failures will occur.

Select Configure.

Authentication (Connect to ServiceNow)¶

The following procedure describes how to set up a connection to ServiceNow. You can select either basic authentication (username and password) or OAuth.

Select one of possible authentication methods: Basic authentication or OAuth2 (recommended).
In the ServiceNow Instance field, enter the name of the ServiceNow® instance.

This is the first part of the hostname of your ServiceNow® instance. For example, if the URL to your ServiceNow® instance is:
```
https://myinstance.service-now.com
```
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The name of your instance would be myinstance.

Basic authentication flow¶

In ServiceNow username and ServiceNow password fields enter the credentials for your ServiceNow® account.
Select Connect.

OAuth flow¶

Create an application registry in ServiceNow® and use it to configure the connector. To create the application registry, do the following:

Login to your ServiceNow® instance, then select Homepage.
Search for System OAuth, then select Application Registry.
Select New, then select Create an OAuth API endpoint for external clients.

This displays a configuration page for the application registry as shown in the following image:
In ServiceNow, enter a name for the OAuth application registry in the Name field.
In Snowsight, copy the value in the Redirect URL field. In ServiceNow, paste this value in the Redirect URL field.

This value was generated by the connector.
If required, in ServiceNow, update the values in the Refresh Token Lifespan and Access Token Lifespan fields.
- Snowflake recommends setting the lifespan of the access token to at least 600 seconds.
- For the lifespan of the refresh token, specify a value that is 7776000 (90 days).
  
  Attention
  
  When Snowsight is opened via Private Link URL, the redirect URL is different than when Snowsight was opened via public URL. If you configured redirect URL using value provided by Private Link Snowsight, all subsequent updates to refresh token must also be done with Private Link Snowsight. If you are accessing Snowsight via publicly available URL, all subsequent updates to refresh token must also be done with Snowsight available at this URL.
In ServiceNow, select Submit.

The OAuth application registry appears in the list of application registries.
In ServiceNow, select the application registry you just created.

Note that ServiceNow® created values for the Client ID and Client Secret fields.
In ServiceNow, copy the value for Client ID. In Snowsight, paste this value into the Client ID field.
In ServiceNow, copy the value for Client Secret. In Snowsight, paste this value into the Client Secret field.

Note

The connector uses a secret (a type of schema-level object) to store the access tokens used to authenticate to the ServiceNow® instance. The connector uses this secret object with a security integration and an external access integration to connect to the ServiceNow® instance.

The secret, security integration, and external access integration are created automatically when you install the connector.
In Snowsight, select Connect.

A dialog appears asking you to login to your ServiceNow® instance with User name and Password. Provide the credentials of the user you want the connector to authenticate with - it needs to have the privileges listed in Preparing your ServiceNow® instance.
Once logged in, confirm that you want to allow the connector to connect to your ServiceNow® account. Select Allow.

Note

If you were redirected directly to this dialog without needing to provide credentials, then you are already logged in to your ServiceNow® instance. Ensure you are logged in as the same user the connector should use and that user has the necessary privileges.

Note: The current logged-in user is shown in upper right corner of the dialog.

Validate source¶

This section will check connection to your ServiceNow® instance and, optionally, allow to setup Journal Table.

To enable the propagation of deleted records, set Journal Table that serves as the source of information about deleted records.

You can use either the sys_audit_delete table or a custom one as the source table.

If you do not want to ingest deleted records from ServiceNow® into Snowflake, leave this field empty.

Note

Ensure that the ServiceNow® user for the connector has access to the specified journal table. If not all rows in the table are visible to the user the connector may fail to fetch entries from the journal table during access validation. In such a case perform this step by calling the FINALIZE_CONNECTOR_CONFIGURATION procedure from SQL and provide it either the table_name or sys_id argument, together with journal_table.

Warning

It is not possible to setup journal table after configuring the application. To enable the deleted records propagation after configuration, you will need to reinstall the connector.

Select Validate to finish the configuration process.

During source validation the connector will attempt to check if a previously exported connector state is present in the destination schema. If the __CONNECTOR_STATE_EXPORT table is present and accessible to the connector, the connector will try to import the state. When the import finishes successfully, the export table will be deleted. If an error occurs during import, it’s possible to run the source validation again after fixing the error. If you don’t want to import the state or you don’t want to fix the import error, transfer ownership of the table from the connector and drop the table.

Side effects¶

As a result of the configuration steps, the wizard creates the following objects residing outside of the connector’s database that are needed by the connector to work:

Database CONNECTORS_SECRET with schema SNOWFLAKE_CONNECTOR_FOR_SERVICENOW used to store secret object,
Secret object in CONNECTORS_SECRET.SNOWFLAKE_CONNECTOR_FOR_SERVICENOW named SECRET with your ServiceNow® credentials,
Network rule object in CONNECTORS_SECRET.SNOWFLAKE_CONNECTOR_FOR_SERVICENOW named NETWORK_RULE used to allow outbound traffic from your account,
Security integration named SNOWFLAKE_CONNECTOR_FOR_SERVICENOW_SECURITY_INTEGRATION, which is used to integrate between Snowflake and a third-party OAuth 2.0 service,
External access integration SNOWFLAKE_CONNECTOR_FOR_SERVICENOW_EXTERNAL_ACCESS_INTEGRATION is used for communication with ServiceNow.

Note

The above objects are called like this if default SNOWFLAKE_CONNECTOR_FOR_SERVICENOW name was chosen as the application name. If the chosen application name is changed during installation, these objects’ names will differ accordingly.

Important

Names of these objects, the warehouse and the role used during configuration must not be changed. The connector references them by name. Changing their names or dropping them breaks references and will make the connector unusable.

If necessary, instead of renaming the warehouse, use the UPDATE_WAREHOUSE stored procedure to change the warehouse used by the connector.

Configuring Logging for the Connector¶

The Snowflake Connector for ServiceNow®V2 uses event tables to store error logs for the connector. To set up an event table manually follow Setting up an Event Table guide.

If the event table isn’t set up, and if you choose to install the connector using the UI wizard, the connector will set up the event table automatically.

Note

This app will collect logs for debugging purposes and write them to an event table in your account and to an event table in the app provider account. Only logs for this app will be included, and these logs are “Connector Usage Data”.

The event table will be created in the following location.

Object

Name

Database

EVENTS_DB

Schema

PUBLIC

Table

EVENTS

Object	Name
Database	EVENTS_DB
Schema	PUBLIC
Table	EVENTS

Connector application roles¶

As a Native Application, Snowflake Connector for ServiceNow®V2 defines application roles. They can be reviewed in Role-Based Access Control for Connectors.

Next steps¶

After installing and configuring the connector, perform the steps described in Setting Up data ingestion for your ServiceNow® data.