Linux mysql服务器5.6不会启动或重新启动

Question

我对mysql服务器有个问题，它不想开始，你有什么想法吗？

谢谢。

    janv. 29 10:51:15 clicshopping mysqld_safe[20076]: 160129 10:51:15 mysqld_safe Can't log to error log and syslog at the same time.  Remove all --log-error configuration options for --syslog to take effect.
janv. 29 10:51:15 clicshopping mysqld_safe[20076]: 160129 10:51:15 mysqld_safe Logging to '/var/log/mysql/error.log'.
janv. 29 10:51:15 clicshopping mysqld_safe[20076]: 160129 10:51:15 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
janv. 29 10:51:15 clicshopping mysqld_safe[20076]: 160129 10:51:15 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
janv. 29 10:51:55 clicshopping sudo[19837]: pam_unix(sudo:session): session closed for user root

我的过程

sudo service mysql stop
sudo service apparmor stop
sudo mv /var/lib/mysql /home/mysql
sudo ln -s /home/mysql /var/lib/mysql
sudo chown -R mysql:mysql /home/mysql
vi /etc/apparmor.d/usr.sbin.mysqld (change var/lib/mysql ot /home/mysql)
sudo service apparmor start
sudo service mysql start

删除后/var/log/mysql/error.log :结果

mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
2016-01-29 11:21:17 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2016-01-29 11:21:17 0 [Note] /usr/sbin/mysqld (mysqld 5.6.28-0ubuntu0.15.10.1) starting as process 27093 ...
2016-01-29 11:21:17 27093 [Warning] Buffered warning: Changed limits: max_open_files: 1024 (requested 5000)

2016-01-29 11:21:17 27093 [Warning] Buffered warning: Changed limits: table_open_cache: 431 (requested 2000)

2016-01-29 11:21:17 27093 [Warning] Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead.
2016-01-29 11:21:17 27093 [Note] Plugin 'FEDERATED' is disabled.
/usr/sbin/mysqld: Table 'mysql.plugin' doesn't exist
2016-01-29 11:21:17 27093 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
2016-01-29 11:21:17 27093 [Note] InnoDB: Using atomics to ref count buffer pool pages
2016-01-29 11:21:17 27093 [Note] InnoDB: The InnoDB memory heap is disabled
2016-01-29 11:21:17 27093 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2016-01-29 11:21:17 27093 [Note] InnoDB: Memory barrier is not used
2016-01-29 11:21:17 27093 [Note] InnoDB: Compressed tables use zlib 1.2.8
2016-01-29 11:21:17 27093 [Note] InnoDB: Using Linux native AIO
2016-01-29 11:21:17 27093 [Note] InnoDB: Not using CPU crc32 instructions
2016-01-29 11:21:17 27093 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2016-01-29 11:21:17 27093 [Note] InnoDB: Completed initialization of buffer pool

Answer 1

Starting mysqld daemon with databases from /var/lib/mysql

您没有更改/etc/my.cnf或发行版放置的任何位置中的数据。将其更改为datadir=/home/mysql可以解决您的问题。

Answer 2

似乎您的“mysql.plugin”表不存在，或者mysql数据dir不属于mysql用户。

Answer 3

第一行将告诉您问题的所在：

詹夫。29 :51:15陈词滥调mysqld_safe20076：160129 10:51:15 mysqld_safe不能同时登录错误日志和syslog。删除所有-日志错误配置选项，以便--syslog生效.

你对此的回应是：

在var/log/mysql/error.log中，我删除了所有数据，不起作用:参见上文

但你没抓住重点！MySql并不关心该文件中的数据是否存在。它关心的是，您仍在尝试将新数据写入文件。您需要更改您的配置文件，这样您就不会首先尝试写入该日志。或者，您可以删除--syslog选项。您可以写到一个或另一个日志位置，而不是两者都写。

还有，你对你的插件桌做了什么！？

2016-01-29 11:21:17 27093 错误无法打开mysql.plugin表.请运行mysql_upgrade来创建它。

正如它所建议的，尝试运行mysql_upgrade。