How to know if MySQL got an error reading communication packet?
With that, you can correlate it to the connection number from the error lines. Enable the Audit log plugin, which logs connections and query activity, and check the Percona Audit Log Plugin as soon as you hit a connection abort error. You can check for the audit log to identify which query is the culprit.
How is network communication code written in MySQL?
MySQL network communication code was written under the assumption that queries are always reasonably short, and therefore can be sent to and processed by the server in one chunk, which is called a packet in MySQL terminology.
What do you call a packet in MySQL?
MySQL network communication code was written under the assumption that queries are always reasonably short, and therefore can be sent to and processed by the server in one chunk, which is called a packet in MySQL terminology.
What causes a connection to be aborted in MySQL?
Aborted connections happen because a connection was not closed properly. The server can’t cause aborted connections unless there is a networking problem between the server and the client (like the server is half duplex, and the client is full duplex) – but that is the network causing the problem, not the server.
What does ” got an error reading communication packet ” mean?
In Percona’s managed services, we often receive customer questions on communication failure errors—where customers are faced with intermittent “Got an error reading communication packets” messages. I thought this topic deserved blog post so we can discuss possible reasons for this error, and how to remedy this problem.
Why did Docker get an error reading communication?
But I need to start this containers programmatically via docker api and in this case connections from app are dropped with [Note] Aborted connection 8 to db: ‘unconnected’ user: ‘root’ host: ‘164.20.10.2’ (Got an error reading communication packets). Creating a bridge network:
Why are so many connections sleeping in MySQL?
A high rate of connections sleeping inside MySQL for hundred of seconds is one of the symptoms that applications aren’t closing connections after doing work, and instead relying on the wait_timeout to close them. I strongly recommend changing the application logic to properly close connections at the end of an operation.
Why is MySQL still querying these federated tables?
However, there are a few other scripts running on solomon that do check these federated tables on serenity, so even though the user has passed through to solomon, the site is still querying these federated tables and thereby hitting serenity.