Rolling back a migration

When rolling back a migration, you will restore the data backup that was created before the migration. See How do I preserve my data through the migration?.

Start

1. Stop and disable auto-run on all new GWS nodes that were run during the migration.

   chkconfig gws disable; service gws stop

2. Restore the Cassandra database from the snapshot you took before the migration. Detailed instruction depends on your Cassandra version and can be obtained here:
   • http://docs.datastax.com/en/cassandra/1.2/cassandra/operations/ops_backup_snapshot_restore_t.html
   • https://docs.datastax.com/en/cassandra_win/2.2/cassandra/operations/opsBackupSnapshotRestore.html
3. Enable the Jetty service on all nodes:

   chkconfig jetty9 enable

4. Run GWS service on all nodes

   service jetty9 start

5. Enforce synchronization with ConfigServer by using the OPS API:

   /api/v2/ops/genesys-environments/ON_PREMISE_ENVIRONMENT/synchronization

End