Option 3: Manually connect your EC2 instance to your RDS database by mimicking the automatic connection feature
Objective
The objective of Option 3 is to learn how to manually configure the connection between an EC2 instance and an RDS database by manually reproducing the configuration of the automatic connection feature.
Before you begin
You'll need the following to complete this tutorial:
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An EC2 instance that is in the same VPC as the RDS database. You can either use an existing EC2 instance or follow the steps in Task 1 to create a new instance.
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An RDS database that is in the same VPC as the EC2 instance. You can either use an existing RDS database or follow the steps in Task 2 to create a new database.
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Permissions to call the following operations. If you have completed Option 1 of this tutorial, you already have these permissions.
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ec2:AssociateRouteTable -
ec2:AuthorizeSecurityGroupEgress -
ec2:CreateRouteTable -
ec2:CreateSecurityGroup -
ec2:CreateSubnet -
ec2:DescribeInstances -
ec2:DescribeNetworkInterfaces -
ec2:DescribeRouteTables -
ec2:DescribeSecurityGroups -
ec2:DescribeSubnets -
ec2:ModifyNetworkInterfaceAttribute -
ec2:RevokeSecurityGroupEgress
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Tasks to complete Option 3
