Error: Shut Down Sync. Heartbeat Expired.

Issue

The Fivetran Platform Connector's LOG table contains sync_end events that display the following error:

Shut down sync. Heartbeat expired.

Environment

Connector: MySQL

Resolution

To resolve this issue, do the following:

1. In Fivetran, go to your MySQL connector page.
2. Select the Setup tab.
3. Click Edit connection.
4. In the Host field, ensure you have provided the correct host IP (e.g., 1.2.3.4) or domain (e.g., your.server.com).
5. Click Save & Test.

Cause

This issue occurs when you provide an invalid or incorrect value in the Host field of the connector's setup form. For example, entering localhost will cause this issue if you haven't configured the connector to use the SSH connection method.