Mysql启动问题|错误！服务器退出而不更新PID文件

Question

有什么想法吗？

Joshs-MacBook-Pro:cdwhp joshc$ mysql.server start
Starting MySQL
.. ERROR! The server quit without updating PID file (/usr/local/var/mysql/Joshs-MacBook-Pro.local.pid).

错误日志

120927 13:08:35 mysqld_safe Starting mysqld daemon with databases from /usr/local/var/mysql
120927 13:08:36 [Warning] Setting lower_case_table_names=2 because file system for /usr/local/var/mysql/ is case insensitive
120927 13:08:36 InnoDB: The InnoDB memory heap is disabled
120927 13:08:36 InnoDB: Mutexes and rw_locks use GCC atomic builtins
120927 13:08:36 InnoDB: Compressed tables use zlib 1.2.5
120927 13:08:36 InnoDB: Initializing buffer pool, size = 128.0M
120927 13:08:36 InnoDB: Completed initialization of buffer pool
120927 13:08:36 InnoDB: highest supported file format is Barracuda.
120927 13:08:36  InnoDB: Waiting for the background threads to start
120927 13:08:37 InnoDB: 1.1.8 started; log sequence number 9531786
120927 13:08:37 [ERROR] /usr/local/Cellar/mysql/5.5.27/bin/mysqld: unknown variable 'default-character-set=utf8'
120927 13:08:37 [ERROR] Aborting

120927 13:08:37  InnoDB: Starting shutdown...
120927 13:08:37  InnoDB: Shutdown completed; log sequence number 9531786
120927 13:08:37 [Note] /usr/local/Cellar/mysql/5.5.27/bin/mysqld: Shutdown complete

120927 13:08:37 mysqld_safe mysqld from pid file /usr/local/var/mysql/Joshs-MacBook-Pro.local.pid ended

Answer 1

The option default-character-set was removed in MySQL 5.5.3。

您应该在my.cnf中将其更改为另一种方法；

character-set-server=utf8

Answer 2

在我的案例中，完全重新安装mysql解决了这个问题：

brew uninstall mysql
rm -Rf /usr/local/var/mysql
brew install mysql
mysql.server start

注意:使用此选项作为最后手段，将删除所有数据

Answer 3

我也有同样的问题。我在做

sudo mysql.server start

我真正应该做的是以我的用户(而不是su)的身份运行该命令

mysql.server start

希望这对某些人有帮助。