"Lost connection to MySQL server at 'reading initial communication packet', system error: 0" Is Primarily Caused By Network Firewall Problem (Doc ID 2926158.1)

Last updated on SEPTEMBER 06, 2023

Applies to:

MySQL Server - Version 8.0 and later
Information in this document applies to any platform.

When connecting from a client (mysql CLI, or an application program using MySQL drivers), it can fail due to the following error message:

This problem can be seen after network maintenance.

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In this Document

Symptoms

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