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Rollback Database from a Cassandra and ElasticSearch Cluster to Local Database

Solved67 views4th July 2023
1
Dennis Nacorda32 9th June 2023 0 Comments

Dear Dojo,

We will migrate from DMAs local database to a cluster. In case we face an issue and need to rollback, could you please advise me on the steps involved in rolling back the database.

Thank you.

Marieke Goethals [SLC] [DevOps Enabler] Selected answer as best 4th July 2023

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Alexander Verriest [SLC] [DevOps Member]177 Posted 14th June 2023 0 Comments

The migration process only copies data from the local Cassandra to the remote Cassandra cluster, and while the migration is ongoing the new data is written to both the old local db and the new clustered one, so if the migration process was aborted halfway, the data loss in the local Cassandra database should be minimal.

I believe nothing needs to be done after aborting the migration tool, as the db config only gets changed after the migration was finished.

You can always make a copy of the C:\Skyline DataMiner\db.xml file, so you can restore the config to point your DMA to the old local Cassandra if this was already changed and you want to go back to using the old db.

https://docs.dataminer.services/user-guide/Reference/Skyline_DataMiner_Folder/More_information_on_certain_files_and_folders/DB_xml.html?q=db.xml

Marieke Goethals [SLC] [DevOps Enabler] Selected answer as best 4th July 2023
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