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docs/doc/source/dist_cloud/robust-error-handling-during-an-orchestrated-upgrade.rst
Adil 5c8f7b1d22 Node Management and Distributed cloud Guide updates 
Global Pass Upgrades

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Pacth 01: inputs from email by Greg

Patch 03: Created new section for subcloud group
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Patch 04: corrected typos (Mary's comments)

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Signed-off-by: Adil <mohamed.adilassakkali@windriver.com>
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Error Handling During An Orchestrated Upgrade

This section describes the errors you may encounter during an orchestrated upgrade and the steps you can use to troubleshoot the errors.

For a successful orchestrated upgrade, ensure the upgrade prerequisites, procedure, and postrequisites are met.

If a failure occurs, use the following general steps:

  1. Allow the failed strategy to complete on its own.
  2. Check the output using the dcmanager strategy-step list command for failures, if any.
  3. Address the cause of the failure. For more information, see Failure During the Installation or Data Migration of N+1 Load on a Subcloud <failure-during-the-installation-or-data-migration-of-n+1-load-on-a-subcloud>.
  4. Retry the orchestrated upgrade. For more information, see Distributed Upgrade Orchestration Process Using the CLI <distributed-upgrade-orchestration-process-using-the-cli>.

Note

Orchestrated upgrade can be retried for a group of failed subclouds that are still online using the upgrade-strategy create --group <group-id> command. Failed subclouds that are offline must be retried one at a time.

Failure Prior to the Installation of N+1 Load on a Subcloud <failure-prior-to-the-installation-of-n+1-load-on-a-subcloud>

Failure During the Installation or Data Migration of N+1 Load on a Subcloud <failure-during-the-installation-or-data-migration-of-n+1-load-on-a-subcloud>