Performing cleanup v6.2.0

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In this final phase you decommission the legacy replication infrastructure.

Decoupling the source replication

After the application has been successfully switched to the PGD cluster, remove the migration links to fully decouple the environments.

To confirm that data is no longer flowing through the source node, you must disable the logical subscriptions on all PGD nodes that connect back to the original PSR source. On all PGD nodes, run:

DROP SUBSCRIPTION `subscription_name`;

Where subscription_name is the name of the subscription on each node.

Cleaning up the seed node

After the migration is finalized and the cluster is stable, the seed node no longer requires the legacy version of Postgres. You can now remove the corresponding outdated packages from the node to free up resources and simplify future maintenance.

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Application cutover

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Migrating from Postgres Physical Streaming Replication (PSR) to PGD