Change tracking provides real-time incremental data from Lindorm, which lets you monitor data changes. You can enable change tracking in the Lindorm console and consume the incremental data for your business scenarios. This topic describes how to enable change tracking in the console.
Prerequisites
LindormTable is enabled.
Procedure
To enable change tracking, you must purchase two types of nodes in the console: engine nodes and Lindorm Tunnel Service (LTS) nodes.
Lindorm New Version
Purchase message engine nodes
If your instance already has the message engine enabled, you can skip this step.
Log on to the Lindorm console.
In the upper-left corner of the page, select the region where the instance is deployed.
On the Instances page, click the ID of the target instance or click View Instance Details in the Actions column for the instance.
In the navigation pane on the left, click LindormMessage.
ImportantIf the LindormMessage tab does not appear in the console, contact Lindorm technical support on DingTalk at s0s3eg3.
On the LindormMessage page, click Activate Now.
On the Change Specification page, configure the following parameters.
Message Engine Node Type: Select a node type for the message engine. Options include General-purpose, Memory-optimized, and Compute-optimized.
Message Engine Node Specifications: Select the node specifications for the message engine.
Message Engine Node Number: Select the number of message engine nodes.
Storage Capacity: Select the storage capacity.
Click Buy Now.
Lindorm
Purchase stream data nodes
If your instance already has the stream engine enabled, you can skip this step.
Log on to the Lindorm console.
In the upper-left corner of the page, select the region where the instance is deployed.
On the Instances page, click the ID of the target instance or click View Instance Details in the Actions column for the instance.
In the navigation pane on the left, click Wide Table Engine.
Click the Change Tracking tab.
ImportantIf the Change Tracking tab does not appear in the console, contact Lindorm technical support on DingTalk at s0s3eg3.
On the Change Tracking page, click Activate Now.
On the Change Specification page, configure the following parameters.
Stream Data Node Specifications: Select the node specifications for the stream engine.
Stream Data Node Number: Select the number of stream engine nodes.
Storage Space: Select the storage capacity.
For more information about how to select node specifications and the number of nodes, see Select node specifications and quantity.
Click Buy Now.
Purchase LTS nodes
If you have already purchased the LTS service for your instance, you can skip this step.
Log on to the Lindorm console.
In the upper-left corner of the page, select the region where the instance is deployed.
On the Instances page, click the ID of the target instance or click View Instance Details in the Actions column for the instance.
In the navigation pane on the left, click Wide Table Engine.
Click the Change Tracking tab.
ImportantIf the Change Tracking tab does not appear in the console, contact Lindorm technical support (DingTalk ID: s0s3eg3).
On the Change Tracking page, click Activate Now.
On the Change Specification page, configure the following parameters.
LTS Data Synchronization Core Specifications: Select the core specifications for LTS data synchronization.
LTS Node Quantity: Select the number of LTS nodes.
Click Buy Now to complete the purchase.
Related operations
You perform operations for the change tracking feature in the LTS console. Therefore, you must log on to the console before you can create a channel for change tracking. For more information, see Purchase and log on to LTS.