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Home >Database >Mysql Tutorial >Here are a few question-based titles that could work well, based on the article you provided: * Connecting EC2 to RDS: Why Am I Still Getting Firewall Errors? * RDS Connection Issues from EC2: Secu

Here are a few question-based titles that could work well, based on the article you provided: * Connecting EC2 to RDS: Why Am I Still Getting Firewall Errors? * RDS Connection Issues from EC2: Secu

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2024-10-27 04:15:30459browse

Here are a few question-based titles that could work well, based on the article you provided: * Connecting EC2 to RDS: Why Am I Still Getting Firewall Errors? * RDS Connection Issues from EC2: Security Group Misconfiguration? * Troubleshooting RDS Conn

Unable to Establish RDS Connection from EC2 Instance

In an attempt to connect to an RDS instance from an EC2 instance, you may encounter an error indicating a firewall or DNS issue. Despite adding the EC2 security group to the RDS security group, the connection still fails.

Resolution:

Contrary to common belief, it is not necessary to modify the RDS security group's "Security Groups" option. Instead, navigate to:

  1. RDS instances list
  2. Specific RDS instance
  3. "Security group rules" section

Click the "Edit" button for "Inbound rules." Adjust the value to reflect the IP address or IPv4 CIDR block of the EC2 instance.

You can obtain the EC2 instance's IP address by running "ip addr" via SSH or using EC2 Manager's "Private IPs" field.

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