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Upgrade TiFlash Nodes
Learn how to upgrade TiFlash nodes.
reference
/docs/dev/reference/tiflash/upgrade/

Upgrade TiFlash Nodes

Note:

To upgrade TiFlash from the Pre-RC version to a later version, contact PingCAP for more information and help.

Currently, you cannot upgrade TiFlash by running the tiup cluster upgrade command. Instead, take the following steps to upgrade TiFlash:

Before the upgrade, make sure that the cluster is started. To upgrade TiFlash nodes, take the following steps:

  1. Refer to Scale in a TiFlash node, and scale in all the TiFlash nodes.

  2. Run the upgrade command:

    {{< copyable "shell-regular" >}}

    tiup cluster upgrade test v4.0.0-rc

  3. Run the scale-out command:

    {{< copyable "shell-regular" >}}

    tiup cluster scale-out test scale-out.yaml

  4. View the cluster status:

    {{< copyable "shell-regular" >}}

    tiup cluster display test

  5. Access the monitoring platform using your browser, and view the status of the cluster.