在亚马逊托管Jboss Web应用程序时如何解决数据库的连接拒绝问题

Question

I have created amazon ec2 instance and rds instance correctly. I deployed my war file to the ec2 correctly and it deployed when I run the jboss server using Putty. But the mysql data tables does not created and it says connection refuse error. What are the changes that should include in standalone.xml? I will attach my datasource in standalne.xml below.

<datasource jndi-name="java:/iasDs" pool-name="iasDs_pool" enabled="true">
                <connection-url>
                    jdbc:mysql://localhost.com:3306/ias_db
                </connection-url>
                <driver>
                   mysql
                </driver>
                <pool>
                    <max-pool-size>
                        30
                    </max-pool-size>
                </pool>
                <security>
                    <user-name>
                        ****
                    </user-name>
                    <password>
                        ******
                    </password>
                </security>
            </datasource>               
            <drivers>               
                <driver name="mysql" module="com.mysql"/>   
            <drivers>

End point of the rds is my-db-instance.cty4r97dlgx0.ap-southeast-1.rds.amazonaws.com:3306.Help me with this.

Answer 1

change your <connection-url> to use the RDS end point instead of localhost

I assume localhost is the default but you have the database on RDS on a different address

The username and password will also need setting correctly for the RDS instance

If that doesn't work you need to check

1) security groups on the RDS and network ACLs for your VPC

2) basic connectivity on port 3306 between RDS and EC2. For example on the EC2 run the command nc -vz my-db-instance.cty4r97dlgx0.ap-southeast-1.rds.amazonaws.com 3306

3) try connecting to the RDS from the EC2 with a command line client mysql