Step G: Complete the Downgrade on Node B - AWS Elemental Delta

This is version 2.3 of the AWS Elemental Delta documentation. This is the latest version. For prior versions, see the Previous Versions section of AWS Elemental Delta Documentation.

Step G: Complete the Downgrade on Node B

The node must be in a working state prior to downgrade. If the node is in a degraded state (for example, the web interface isn't responding), the downgrade fails.

Perform these steps at node B. Remember that in Step D: Downgrade Node B, you were prompted either to reboot or to restart elemental_se. You now obey that prompt.

  1. Enter this command to reboot:

    [elemental@hostname ~]$ sudo reboot

    The reboot takes approximately 5 minutes. When the reboot completes, the elemental _se service automatically starts. Look for this message on the command line:

    Starting elemental_se: [ OK ]
  2. If you didn't meet the conditions for special downgrade, skip this step.

    If you met the conditions for special downgrade, run the installer with downgrade to your desired version.

    [elemental@hostname ~]$ sudo sh ./elemental_production_delta_<version>.run –-skip-all –xeula --start --downgrade --restore-db <path/to/database/backup>

    The new software is installed and all services except elemental_se are automatically restarted.

    Once installation is complete, you might be prompted to reboot:

    Installation and configuration complete! . . . NOTE: You must reboot your system to finish the installation!

    Enter this command to reboot:

    [elemental@hostname ~]$ sudo reboot

    The reboot takes approximately 5 minutes. When the reboot completes, the elemental _se service automatically starts. Look for this message on the command line:

    Starting elemental_se: [ OK ]
  3. If you're not prompted to reboot, you are prompted to start elemental_se:

    Would you like to start the Elemental service now? [Y]

    Enter Y.

    The restart takes approximately 1 minute. When the restart is done, this message appears:

    Installation and configuration complete! Please open a web browser and point it to http://xxx.xxx.xxx.xxx to get to the web interface. Enjoy!

Once node B has restarted, node B becomes leader and starts to ingest content.