The tungsten_provision_thl script is designed to run from a replication Primary connected to a standard MySQL instance. The standard commands will not work if you are using RDS as a Primary.
The simplest method is to add the
argument to your command. This will make the script compatible with RDS.
The drawback is that we are not able to guarantee a consistent
provisioning snapshot in RDS unless changes to the database are stopped.
The script will monitor the binary log position during the provisioning
process and alert you if there are changes. After the script completes,
run trepctl online to resume extraction from the Primary
at the current binary log position.
tungsten_provision_thl \ --extract-from=rds \ --tungsten-replicator-package=/home/tungsten/tungsten-clustering-6.0.5-40.tar.gz \ --mysql-package=/home/tungsten/mysql-5.6.20-linux-glibc2.5-x86_64.tar.gz \ --schemas=test
If you aren't able to stop access to the database, the script can
provision from an RDS Read Replica. Before running
tungsten_provision_thl, replication to the replica must
be stopped. This may be done by running CALL
mysql.rds_stop_replication; in an RDS shell. Call
tungsten_provision_thl with the
arguments. The script will read the correct Primary position based on the
Replica replication position. After completion, resume extraction from the
Primary using the standard procedure.
# Run `CALL mysql.rds_stop_replication();` on the RDS Read Replica shell>
tungsten_provision_thl \ --extract-from=rds-read-replica \ --extract-from-host=rds-host2 \ --tungsten-replicator-package=/home/tungsten/tungsten-clustering-6.0.5-40.tar.gz \ --mysql-package=/home/tungsten/mysql-5.6.20-linux-glibc2.5-x86_64.tar.gz \ --schemas=testNOTE >>The THL has been provisioned to mysql-bin.000025:493 on rds-host1:3306 # Run `CALL mysql.rds_start_replication();` on the RDS Read Replica