MySQL версии 8.0.11 и ошибка Symfony 4 "Сервер MySQL ушел"

Question

Я использую Symfony 4 и Mysql версии 8.0.11 и использую пользователя вместо имени root-пользователя, и когда я пытаюсь использовать команду php bin/console make:migration я получаю эту ошибку:

In AbstractMySQLDriver.php line 126:                                                                                 
An exception occurred in driver: SQLSTATE[HY000] [2006] MySQL server has gone away                                                                                

In PDOConnection.php line 50:                                           
SQLSTATE[HY000] [2006] MySQL server has gone away  

In PDOConnection.php line 46:                                                
SQLSTATE[HY000] [2006] MySQL server has gone away  

In PDOConnection.php line 46: 
PDO::__construct(): Unexpected server respose while doing caching_sha2 auth: 109  

Затем я попытался выполнить поиск в Интернете и обнаружил, что что-то пошло не так с переменными MySQL wait_timeout и max_allowed_packet и мне пришлось изменить эти переменные в файле /etc/mysql/my.cnf , проблема заключается в том, что когда я иду редактировать этот файл, я только найти это:

# Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2.0,
# as published by the Free Software Foundation.
#
# This program is also distributed with certain software (including
# but not limited to OpenSSL) that is licensed under separate terms,
# as designated in a particular file or component or in included license
# documentation.  The authors of MySQL hereby grant you an additional
# permission to link the program and your derivative works with the
# separately licensed software that they have included with MySQL.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License, version 2.0, for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
#
# The MySQL  Server configuration file.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with '.cnf', otherwise they'll be ignored.
!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

тогда я попытался увидеть поток под названием " Почему /etc/mysql/my.cnf EMPTY?"и пользователь сказал использовать один из этих путей:

/etc/mysql/conf.d/
/etc/mysql/mysql.conf.d/
/etc/mysql/mysql.conf.d/mysqld.cnf

и вот я попробовал ... /etc/mysql/conf.d/:

## Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2.0,
# as published by the Free Software Foundation.
#
# This program is also distributed with certain software (including
# but not limited to OpenSSL) that is licensed under separate terms,
# as designated in a particular file or component or in included license
# documentation.  The authors of MySQL hereby grant you an additional
# permission to link the program and your derivative works with the
# separately licensed software that they have included with MySQL.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License, version 2.0, for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA

#
# The MySQL  Client configuration file.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html

[mysql]

в файле /etc/mysql/mysql.conf.d/:

# Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2.0,
# as published by the Free Software Foundation.
#
# This program is also distributed with certain software (including
# but not limited to OpenSSL) that is licensed under separate terms,
# as designated in a particular file or component or in included license
# documentation.  The authors of MySQL hereby grant you an additional
# permission to link the program and your derivative works with the
# separately licensed software that they have included with MySQL.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License, version 2.0, for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA

#
# The MySQL  Server configuration file.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html

[mysqld]
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
datadir         = /var/lib/mysql
log-error       = /var/log/mysql/error.log

и в файле /etc/mysql/mysql.conf.d/mysqld.cnf:

# Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2.0,
# as published by the Free Software Foundation.
#
# This program is also distributed with certain software (including
# but not limited to OpenSSL) that is licensed under separate terms,
# as designated in a particular file or component or in included license
# documentation.  The authors of MySQL hereby grant you an additional
# permission to link the program and your derivative works with the
# separately licensed software that they have included with MySQL.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License, version 2.0, for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA

#
# The MySQL  Server configuration file.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html

[mysqld]
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
datadir         = /var/lib/mysql
log-error       = /var/log/mysql/error.log

и ни в одном из этих файлов мне не удалось найти переменные MySQL wait_timeout и max_allowed_packet , так что заранее спасибо, если кто-то может помочь мне с этой проблемой. :)

PS:(я уже запустил эту команду php bin/console make:migration несколько раз до этой ошибки, а также создал базы данных и прошел нормально, так что, похоже, это не проблема установки).

Обновление: кажется, успешно изменили две переменные wait_timeout и max_allowed_packet глобально, добавив к этим трем файлам следующее

max_allowed_packet=1024M 
wait_timeout=3000000

и затем с помощью этой команды sudo service mysql restart
давая мне это:

mysql> SHOW global VARIABLES LIKE "wait_timeout";
+---------------+---------+
| Variable_name | Value   |
+---------------+---------+
| wait_timeout  | 3000000 |
+---------------+---------+
1 row in set (0,00 sec)

mysql> SHOW VARIABLES like 'max_allowed_packet';
+--------------------+------------+
| Variable_name      | Value      |
+--------------------+------------+
| max_allowed_packet | 1073741824 |
+--------------------+------------+
1 row in set (0,00 sec)

но все же, когда я попытался использовать эту команду php bin/console make:migration она выдала мне ту же ошибку, о которой говорилось выше в этом посте, также попытался изменить переменную wait_timeout на 300 тем же методом, и он дал мне тот же результат. :(

С помощью этой команды sudo vim /var/log/mysql/error.log я получаю это:

2018-07-29T18:55:18.382164Z 0 [Warning] [MY-010909] [Server] /usr/sbin/mysqld: Forcing close of thread 8  user: 'alexandre'.
2018-07-29T18:55:20.288756Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.11)  MySQL Community Server - GPL.
2018-07-29T18:55:20.642118Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.11) starting as process 31833
2018-07-29T18:55:21.704556Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed.
2018-07-29T18:55:21.720385Z 0 [System] [MY-010931] [Server] /usr/sbin/mysqld: ready for connections. Version: '8.0.11'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  MySQL Community Server - GPL.

Обновление: я удалил mysql и php и изменил на mysql 5.7 и php 7.2.7, изменение php могло решить эту проблему, чтобы связать пользователя @jibe, если кто-то все еще не может решить проблему, я позволю этим двум другим ссылкам ссылка 1 и ссылка2.

Answer 1

Я знаю, что это было давно, но я нашел ответ. Используйте следующую команду, чтобы обновить ваш пароль с помощью нового плагина аутентификации. Вы можете использовать MySQL 8 сейчас. Повеселись.

ALTER USER `username`@`localhost` IDENTIFIED WITH caching_sha2_password BY 'password';

ИЛИ ЖЕ

ALTER USER 'username'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';