Cannot get connection for URL of MySQL DB: Communications link failure

SYMPTOM

<db:config name="Database_Config" doc:name="Database Config" doc:id="249c41bc-c65d-4c6a-a858-94e7ed63ae97" >
	<db:my-sql-connection host="samplemysql.com" port="3306" user="myuser" password="mypassword" database="TESTDB" >
		<db:connection-properties >
			<db:connection-property key="useSSL" value="true" />
			<db:connection-property key="requireSSL" value="true" />
			<db:connection-property key="verifyServerCertificate" value="false" />
		</db:connection-properties>
	</db:my-sql-connection>
</db:config>

[2021-12-15 14:44:09.598] INFO  LifecycleAwareConfigurationInstance [[MuleRuntime].uber.02: [test-rds].uber@org.mule.runtime.module.extension.internal.runtime.config.LifecycleAwareConfigurationInstance.testConnectivity:179 @5f1ee9a5] [event: ]: Connectivity test failed for config 'Database_Config'. Application deployment will continue. Error was: Could not obtain connection from data source
org.mule.runtime.api.connection.ConnectionException: Could not obtain connection from data source
Caused by: org.mule.extension.db.api.exception.connection.ConnectionCreationException: Could not obtain connection from data source
Caused by: org.mule.runtime.extension.api.exception.ModuleException: java.sql.SQLException: Cannot get connection for URL jdbc:mysql://samplemysql.com:3306/TESTDB?verifyServerCertificate=false&useSSL=true&requireSSL=true : Communications link failure

The last packet successfully received from the server was 121 milliseconds ago.  The last packet sent successfully to the server was 115 milliseconds ago.

CAUSE

SOLUTION

<db:connection-property key="enabledTLSProtocols" value="TLSv1.2" />