I created the RDS basically following the terraform example: <https://www.terraform.io/intro/examples/index.html>

I used existent VPC and when I create an instance in this VPC I can ssh using the SSH key file - `cloudeng.pem`

The MySQL terraform created the RDS with the endpoint `demo-rds.abc.us-east-1.rds.amazonaws.com`.

So, I am trying to set the connection by MySQL workbench.

Workbench requires the following:

```
SSH Hostname:  not sure how to set, tried `172.31.96.233` from ping `endpoint dmo-rds.abc.us-east-1.rds.amazonaws.com`

SSH Username: ec2-user 

SSH Key file – cloudeng.pem

MySQL Hostname: endpoint dbmonitor-rds.cmufislueksi.us-east-1.rds.amazonaws.com

MySQL  Server port: 3306

Username: dbmonitor_user

Password: password

```

I am getting Tunnel Connection Error