How do I resolve the "Got an error reading communication packets" error in Amazon RDS for MySQL?

Key Takeaways

Hello, I'm Winnie, a cloud support engineer at the India place office in Cape Town. Today, I'm going to show you how to troubleshoot the got an error reading communication packets error message on an RDS MySQL or MySQL compatible instance. Let's get started. This error typically occurs when connections are bought because clients don't correctly close connections or because the time out values are set too low. Let's check the current time out parameters for our RDS instance. Open the RDS console. In the left navigation pane, choose parameter groups. Select the parameter group that's associated with your DB instance. Let's search for the connect time out parameter. This parameter sets how long the server waits for a connection packet before it responds with a bad handshake. If this value is set low, increase the value to give clients more time to complete the connection handshake. To change, choose edit, then increase the value. Choose save changes. Now, let's check the interactive time out and wait time out parameters. These parameters set how the server waits for the activity on an idle connection before it closes the connection. If your application uses connection pooling, then make sure that the time out values match your connection pool setting. If the connection drop too early, then increase the values. Next, search for the max allowed packet parameter. If your application handles large queries, then the value might be set too small. If your queries require more memory than the current setting allows, then increase the value. Choose save changes. Also, let's check the net write time out and the net read time out parameters. These parameters set how long the server waits for the data to be read from or written to a connection. Increase the values, then save changes. Note that you can match them to the value of your wait time out parameter. Then, let's verify that the changes work. To check the error logs for aborted connections, select your DB instance, then choose logs and events. Select the error log file to review any new error messages about the communication packet. If the errors stopped, then your parameter changes resolved the issue. You can also turn on slow query logs to capture the queries that run longer than expected. To capture the queries, choose the parameter group, then search for the query log. Set the value to one. Finally, if you have errors, then you can turn on and check your virtual private cloud flow logs to see if connections drop at the network level to determine if a firewall or proxy closing idle connections. Open the VPC console. Select your VPC, then check your flow logs. Make sure your application code is correctly configured to the MySQL close function on database connections when they are no longer needed. Thanks for watching and happy cloud computing from all of us here at AWS. >> [music]