I am trying to evaluate AWS RDS to use as possible DB for our application. I have created a DBInstance(micro) and added IP security group. I am able to connect to the DBInstance from Xampp shell command line and i am able to run queries from that.

But when i try to connect with workbench to the same DBInstance, it gives me error that 'MySQL server has gone away'. Following are the steps i followed to connect with workbench:

  1. Give the Endpoint address of DBInstance as Hostname.
  2. Port : 3306
  3. Set the username and password to master user and its password.

My database is completely new, I have just created a plain DB and trying to connect with workbench right away. I am using workbench version 5.2.25.

Any ideas on what am i missing? And yes, I am just a beginner with MySQL and AWS.

Edit: As asked by RolandoMySQLDBA, i have run the query SELECT USER(),CURRENT_USER(); and in the result i get one row with two columns USER()[email protected] and CURRENT_USER()=ei@%. ei is the master username for my RDS DBInstance. And the column USER() has my ip address after @.

I tried using both [email protected] and ei@% with workbench, but i get access denied error .

  • Please go to the XAMPP Shell Command Line and run this Query : SELECT USER(),CURRENT_USER(); and post the results of the query in the question. Dec 27, 2012 at 21:53
  • Added result to the question. Dec 28, 2012 at 4:12
  • Have you tried using ei as the username in the Workbench config of the connection? Dec 29, 2012 at 13:18
  • @ypercube Yes I have tried that also. Dec 29, 2012 at 15:25
  • Highly recommend to try Sequel Pro. Had tons of connection problems, timeouts, slow query execution etc... with workbench on my rds instance but once moved to Sequel everything just runs perfectly.
    – MikeL
    Nov 27, 2016 at 19:48

2 Answers 2


If you have instantiated a MySQL RDS Instance, you want to create a DB Security Group

  • First Create a DB Security Group
  • Under "Security Group Details", set one of the following connection types
    • CIDR/IP
    • EC2 Security Group
  • Assign Address/Mask
  • Make sure you do not have a proxy/firewall causing interference
  • 1
    I have already done that and i am able to connect to RDS instance with my local shell command line. But can't connect with workbench. Dec 29, 2012 at 3:52

Mine is working perfect on MySQL workbench. I remember following these steps mentioned on this link, maybe it helps:


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