HY000 2006 MySQL 服务器不见了

Question

So, I saw that there is a lot of questions about this problem, but i couldn't find any solution. I try in PHP to connecto to my database on hosting server but I get this: [HY000] [2006] MySQL server has gone away

The code of PHP file looks like this:

<?php

$mysqli = new mysqli('database_addres', 'user', '', "database_name");

?>

I don't make some query calls or something like that. I tried to connect by PDO and mysql_connect() , but there is the same error. connect_timeout is set to 10, wait_timeout to 200, innodb_buffer_pool_size to 536870912. So everything seems to be ok. Do I miss something?

Answer 1

The MySQL server has gone away (error 2006) has two main causes and solutions: Server timed out and closed the connection. To fix, check that wait_timeout mysql variable in your my.cnf configuration file is large enough.

Server dropped an incorrect or too large packet. If mysqld gets a packet that is too large or incorrect, it assumes that something has gone wrong with the client and closes the connection. To fix, you can increase the maximal packet size limit max_allowed_packet in my.cnf file, eg. set max_allowed_packet = 128M, then restart your MySQL server: sudo /etc/init.d/mysql restart