MySQL 1158: Too many connections.

What is MySQL 1158: Too many connections.

Check the Current Number of Connections: Run the command to see the number of current connections and the maximum allowed connections.

SHOW VARIABLES LIKE "max_connections"; SHOW STATUS LIKE "Threads_connected";

Identify the Source of Connections: Find out which user or host is opening so many connections. This can help identify if it's an application issue or unauthorized access.

SHOW PROCESSLIST;

Increase Max Connections Temporarily: If your server can handle more connections and you need an immediate fix, increase the `max_connections` setting.

SET GLOBAL max_connections = 1000; -- Adjust the number based on your server capacity

Close Idle Connections: Look for idle connections that can be closed. If you find any idle connections from the `SHOW PROCESSLIST` output, you can kill them using:

KILL [connection id]; -- Replace [connection id] with the actual ID from SHOW PROCESSLIST

Flush Hosts: If the error is due to blocked connections because of many connection errors, you can flush the hosts.

FLUSH HOSTS;