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I have a public RDS mysql that I can access locally from my pc. When I try to login to an EC2 on a different account than the RDS, I cannot access it using mysql client or utilities. The EC2 has an elastic IP and the IP is in the RDS security group port 3306. Strange that I can access it from my local pc but not from another Aws account EC2 instance.

btw, I did try to find answers to this before posting but couldnt find anything.

  • Have you tried the internal IP instead of the external IP of the connecting instance? – ceejayoz Jul 10 '17 at 19:00
  • @ceejayoz - The Ec2 wouldn't know about the RDS's internal ip...its in a different Aws acount, Vpc, etc – chdev77 Jul 10 '17 at 19:03
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I figured it out. I had to add a new route for the RDS's VPC and set the route target to the gateway.

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