TiCDC for replication

TiDB
1

Application environment:

Production environment

TiDB version: 4.0.14

Problem:

We are attempting to set up replication with TiCDC but are encountering difficulties. Has anyone successfully set up TiCDC replication? If so, could you share the steps you followed? Additionally, are there any workarounds available to configure replication for TiDB version v4.0.14?
Upgrading the version is not an option, and we must continue using version v4.0.14.

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To set up TiCDC replication for TiDB version 4.0.14 in a production environment, follow this detailed action plan. This plan includes necessary steps and workarounds based on successful implementations:

Prerequisites

  1. Hardware and Software Requirements: Ensure that your environment meets the hardware and software requirements for TiDB and TiCDC.

  2. Network Configuration: Ensure that all nodes in the TiDB cluster can communicate with each other and with the TiCDC nodes. This includes configuring firewalls and security groups to allow necessary traffic.

  3. TLS Configuration: If you require secure communication, configure TLS between TiDB components, including TiCDC. Refer to the TLS configuration guide for detailed steps.

Deployment Steps

  1. Install TiUP: Use TiUP to manage your TiDB cluster. If you haven’t already, install TiUP on your control machine. Follow the TiUP installation guide for detailed instructions.

  2. Deploy TiCDC:

    • Use TiUP to deploy TiCDC as part of your TiDB cluster. Ensure that you specify the correct version (4.0.14) and configure the TiCDC nodes according to your topology.
    • Refer to the TiCDC deployment topology for guidance on setting up the cluster.

  3. Configure TiCDC:

    • Set up the TiCDC configuration file to define replication tasks. This includes specifying the downstream system (e.g., MySQL, Kafka) and any necessary filters or transformations.
    • For detailed configuration options, refer to the TiCDC configuration guide.

  4. Start Replication:

    • Use the TiCDC CLI to create and manage changefeeds. Ensure that you monitor the replication process for any errors or performance issues.
    • Address any compatibility issues by referring to the TiCDC compatibility guide.

Monitoring and Maintenance

  1. Monitor Performance: Use Grafana and Prometheus to monitor the performance of your TiDB and TiCDC clusters. Ensure that you have set up alerts for any critical metrics.

  2. Regular Updates: Keep your TiDB and TiCDC components updated to the latest stable versions to benefit from performance improvements and bug fixes.

  3. Backup and Recovery: Implement a robust backup and recovery strategy to ensure data integrity and availability in case of failures.

By following these steps, you can successfully set up TiCDC replication for TiDB version 4.0.14 in a production environment. For further details, refer to the provided source links.