4 Configuration

This chapter lists the configuration changes in release 24.1.x.

4.1 Helm

This section lists the Helm parameter changes in release 24.1.x.

For more information about the Helm parameters, see the "Customizing cnDBTier" section in Oracle Communications Cloud Native Core, cnDBTier Installation, Upgrade, and Fault Recovery Guide.

Release 24.1.2

The following are the Helm parameter changes in release 24.1.2:
  • Updated the default value of the /global/additionalndbconfigurations/ndb/HeartbeatIntervalDbDb parameter from "500" to "1250".
  • Added the following global parameters to configure the buffers for the empty API node IDs used by ndb_restore commands during georeplication recovery:
    • /global/additionalndbconfigurations/tcpemptyapi/SendBufferMemory
    • /global/additionalndbconfigurations/tcpemptyapi/ReceiveBufferMemory
    • /global/additionalndbconfigurations/tcpemptyapi/TCP_SND_BUF_SIZE
    • /global/additionalndbconfigurations/tcpemptyapi/TCP_RCV_BUF_SIZE
  • Added the /db-replication-svc/numberofparallelbackuptransfer parameter to transfer the backups of multiple data nodes in parallel from one site to another.

Release 24.1.1

The following are the Helm parameter changes in release 24.1.1:
  • Updated the path of the retainbackupno parameter from "/db-backup-manager-svc/ndb/retainbackupno" to "/global/ndb/retainbackupno" .
  • Updated the default value of the /global/additionalndbconfigurations/mysqld/replica_parallel_workers parameter to "0" (zero).
  • Removed the /global/image/imagePullPolicy parameter as it is not applicable.

Release 24.1.0

The following are the Helm parameter changes in release 24.1.0:
  • Added the following global parameters to handle switchover identification time:
    • /global/ndbconfigurations/api/source_connect_retry
    • /global.ndbconfigurations/api/source_heartbeat_period
    • /global.ndbconfigurations/api/source_retry_count
    • /global/additionalndbconfigurations/mysqld/replica_net_timeout
  • Added or updated the following global parameters to configure the MTA feature:
    • Updated the default value of the /global/additionalndbconfigurations/mysqld/replica_parallel_workers parameter to 1, which indicates that the MTA feature is disabled by default.

      Note:

      The global parameter to enable or disable MTA feature was already part of the Helm parameters. However, the MTA feature was disabled until the previous release due to technical issues. cnDBTier 24.1.0 supports MTA feature and therefore the /global/additionalndbconfigurations/mysqld/replica_parallel_workers parameter can be used to enable or disable MTA.
    • Added the following parameters to configure the transaction dependency when MTA is enabled or disabled:
      • binlog_transaction_dependency_tracking
      • ndb_log_transaction_dependency