This tutorial demands a service restart since some flags here presented can not be dynamically changed

What is GTID and why do I need it? Directly from the MySQL documentation (excerpt taken as is with different jargons than used here, for master/slave we are using primary/replica):

A global transaction identifier (GTID) is a unique identifier created and associated with each transaction committed on the server of origin (the master). This identifier is unique not only to the server on which it originated, but is unique across all servers in a given replication topology.

GTID assignment distinguishes between client transactions, which are committed on the master, and replicated transactions, which are reproduced on a slave. When a client transaction is committed …

One of the more common struggles I’ve had to assist with in regard to Amazon RDS is enabling binary logging on read replicas, or forming multi-tier replication in instances using version 5.6 or later after seeing that multi-tier replication is not supported in version 5.5 (for a reason that will become clear by the end of this post.)

First off, let’s have a look at the topology that I have in place in my AWS account. As you’ll see below I have a master, blog1, and a read replica that I created via the AWS console called blog2. You’ll also notice that, despite being supported, if I select instance actions while having blog2 highlighted the option to create a read replica is grayed out.

Further, if we use the MySQL CLI to connect to blog2 and check the global variables for log_bin and binlog_format, you’ll see that binary logging is off and binlog_format is set to statement. This is strange considering that the parameter …