# Enabling GTID-based replication for an Aurora MySQL cluster
Enabling GTID-based replication<a name="gtid"></a>

When GTID-based replication is enabled for an Aurora MySQL DB cluster, the GTID settings apply to both inbound and outbound binlog replication. 

**To enable GTID-based replication for an Aurora MySQL cluster**

1. Create or edit a DB cluster parameter group using the following parameter settings:
   + `gtid_mode` – `ON` or `ON_PERMISSIVE`
   + `enforce_gtid_consistency` – `ON`

1. Associate the DB cluster parameter group with the Aurora MySQL cluster. To do so, follow the procedures in [Parameter groups for Amazon Aurora](USER_WorkingWithParamGroups.md).

1. (Optional) Specify how to assign GTIDs to transactions that don't include them. To do so, call the stored procedure in [mysql.rds\$1assign\$1gtids\$1to\$1anonymous\$1transactions (Aurora MySQL version 3)](mysql-stored-proc-gtid.md#mysql_assign_gtids_to_anonymous_transactions).