During an upgrade from OpenSearch 2.19.2 to 3.0.0, we’re encountering compatibility errors with system indices

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During an upgrade from OpenSearch 2.19.2 to 3.0.0, we’re encountering compatibility errors with system indicesRunning OpenSearch Post-Installation Script
Restarting OpenSearch.service after upgrade
Job for OpenSearch.service failed because the control process exited with an error code.
See “systemctl status opensearch.service” and “journalctl -xeu opensearch.service” for details.
dpkg: error processing package opensearch (–configure):
Installed opensearch package post-installation script subprocess returned error exit status 1
Processing triggers for libc-bin (2.36-9+deb12u10) …
Errors were encountered while processing:
opensearch
E: Sub-process /usr/bin/dpkg returned an error code (1)Purchases & Account Services temporarily unavailable

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Hi Nish,

Could you provide any more info about the issue? Particularly application logs that may point to an exception.

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@Nish Additional questions to @cwperks ones. How did you deploy the cluster and what OS and version was used?