mysql - Can't Access AWS RDS Instance after Upgrade -


just upgraded mysql rds instance free-tier db.t2.micro db.r3.large. same storage, same security groups, same user groups/credentials, same vpc, same endpoint name, same everything.

i able access same instance remotely through mysql workbench before upgrade, , according aws endpoint location has not changed.

the error message received:

can't connect mysql server on 'blahblah.rds.amazonaws.com' (10060)

i've tried restarting several times. ensured security group allowed inbound tcp access on port 3306 both 0.0.0.0/0 , ::/0

what else wrong?


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