Joining an Existing Farm

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Updated: August 8, 2012

You can increase size of the farm using the Join Farm option in the configuration wizard.

Use the following procedure to join an existing farm.

  1. When the Workflow Manager Configuration Wizard page appears, click Join an Existing Workflow Farm. The Join Farm page appears.

    WF_JoinFarm_Screen1

  2. Under Provide Workflow Farm Management Database type the complete name of the SQL Server farm management database instance for the existing Workflow Manager farm in the SQL SERVER INSTANCE text box. If the farm management database has a custom database name, also type that database name in the DATABASE NAME text box.

    By default, the wizard connects to the SQL server using Windows Authentication, using the account of the current user. SQL Authentication can be used by setting the advanced options. If your SQL server requires SSL connections, you can enable it using the advanced options.

    To verify that the instance name you entered points to a valid instance, and that the specified database name exists, click the Test Connection button to the right of the text box. A green check mark icon appears next to the button if the connection is made correctly. If an error occurs, place the mouse cursor over the red X in the error message to see the reason for the connection failure.

    Check Use the above SQL server instance and settings for all databases checkbox if you want to use the same SQL server instance and associated settings for all databases.

  3. Under Provide Service Bus Farm Management Database type the complete name of the SQL Server farm management database instance for the existing Service Bus farm in the SQL SERVER INSTANCE text box. If you had checked Use the above SQL server instance and settings for all databases, this field will be read-only. If the farm management database has a custom database name, also type that database name in the DATABASE NAME text box.

    To verify that the instance name you entered points to the correct database, click the Test Connection button to the right of the text box. A green check mark icon appears next to the button if the connection is made correctly. If an error occurs, hover the cursor over the red X in the error message to see the reason for the connection failure.

  4. Click the Next link to retrieve the configuration provided during farm creation. Join Workflow Farm page is displayed.

  5. Under Service Account Password type the password for that user account in the PASSWORD text box. The user ID must be the same as the user ID that you specified when you created the Workflow Manager farm.

    The wizard validates the user ID/password combination and notifies you to re-enter them if it finds an error.

  6. If you specified auto generation of the certificate, you must also provide the certificate generation key. Under Provide Certificate Generation Key, enter the key used to auto generate certificates for the Workflow Manager farm in the text box. This key must be the same as the farm key that you specified when you created the Workflow Manager farm.

  7. Check Allow Workflow Management over HTTP on this computer if you want to allow HTTP access in addition to HTTPS access to the Workflow Manager Management endpoint for this computer.

    Warning

    Enabling HTTP support is not recommended in a production environment.

  8. Check the Enable firewall rules for this computer checkbox if you want to enable firewall rules. If firewall rules are not enabled, services required by Workflow Manager may fail to start.

  9. Click the Next link to retrieve the configuration provided during farm creation. Join Service Bus Farm page is displayed.

  10. Under Service Account Password, type the password for that user account in the PASSWORD text box. The user ID must be the same as the user ID that you specified when you created the Service Bus farm.

    The wizard validates the user ID/password combination and notifies you to re-enter them if it finds an error.

    If you had used the same service account for Workflow Manager and Service Bus while creating the farm, you can copy the password by checking the Use the same service account credentials provided for workflow checkbox.

  11. If you specified auto generation of certificate, you must also provide certificate generation key. Under Provide Certificate Generation Key, enter the key used to auto generate certificates for the Service Bus farm in the text box. This key must be the same as the farm key that you specified when you created the Service Bus farm. If you had used the same certification generation key for Workflow Manager and Service Bus while creating the farm, you can copy the key here by checking the Use the same certification generation key provided for workflow checkbox.

  12. Check the Enable firewall rules for this computer checkbox if you want to enable firewall rules. If firewall rules are not enabled, services required by Workflow Manager may fail to start.

  13. Click the Next link to view the summary page that contains the farm configuration that will be applied on this computer. A message is displayed on the summary page if there is any error, such as a missing certificate or a blocked port.

    Tip

    If you want to configure using PowerShell, you can generate the script based on current configuration on this page by clicking on the PowerShell Commands link.

  14. Click the Apply link to approve the listed options, to join the farm, and to verify that any custom certificates specified during farm creation are installed on this computer.

    Tip

    Configuration Wizard uses ‘WorkflowDefaultNamespace’ as the Service Bus service namespace for use by Workflow Manager. When joining a farm, Configuration Wizard will create this service namespace if it does not exist.