在Mac OS X v10.6 (Snow Leopard)上,启动MySQL会出现以下错误:

服务器退出,没有更新PID文件

文件my.cnf

[mysqld]
port            = 3306

socket          = /tmp/mysql.sock

skip-external-locking

key_buffer_size = 16K

pid-file=/var/run/mysqld/mysqld.pid

[mysqld_safe]

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

当前回答

在这里发布的一些答案的帮助下,我找到了这个问题

我先跑

sudo -我

所以我有根权限。

然后我删除了xxxx。犯错文件:

Rm -rf /usr/local/mysql/data/xxxx.err

当我在SafeMode中创建MySQL后,

/usr/local/mysql/bin/mysqld_safe开始

它将尝试启动并因为错误而退出…一个新的xxx。Err文件将被创建,你需要读取它来查看错误的原因:

Tail -f /usr/local/mysql/data/mysqld.local.err

在我的情况下,由于某种原因,它在/var/log/文件夹中缺少一些文件夹和文件…所以我创建了两个:

cd /var/log

mkdir mysql

触摸mysql-bin.index

创建新文件后,您需要更改权限:

chown -R _mysql /var/log/mysql

当所有这些步骤都采取后,我的数据库立即开始工作……

关键是要读取错误和日志,并找到错误的地方……

其他回答

我希望这对你有用。

在检查错误日志后,我发现了这个:

120309 17:42:49 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
120309 17:42:50 [Warning] Setting lower_case_table_names=2 because file system for /usr/local/mysql/data/ is case insensitive
120309 17:42:50 [Warning] You need to use --log-bin to make --binlog-format work.
120309 17:42:50 [Note] Plugin 'FEDERATED' is disabled.
120309 17:42:50 InnoDB: The InnoDB memory heap is disabled
120309 17:42:50 InnoDB: Mutexes and rw_locks use GCC atomic builtins
120309 17:42:50 InnoDB: Compressed tables use zlib 1.2.3
120309 17:42:50 InnoDB: Initializing buffer pool, size = 16.0M
120309 17:42:50 InnoDB: Completed initialization of buffer pool
120309 17:42:50  InnoDB: Operating system error number 13 in a file operation.
InnoDB: The error means mysqld does not have the access rights to
InnoDB: the directory.
InnoDB: File name /usr/local/mysql/data/ib_logfile0
InnoDB: File operation call: 'open'.
InnoDB: Cannot continue operation.
120309 17:42:50 mysqld_safe mysqld from pid file /usr/local/mysql/data/lu1s.local.pid ended

为了解决这个问题,我给了整个mysql文件夹的所有权:

cd /usr/local
sudo chown mysql mysql
sudo chown mysql mysql-5.5.21-osx10.6-x86_64
sudo chown _mysql mysql
sudo chown _mysql mysql-5.5.21-osx10.6-x86_64

然后(你也可以做命令行),我应用权限(一旦我把所有权给_mysql和mysql用户),从文件夹/usr/local/mysql-5.5.21-osx10.6-x86_64的“获取信息”菜单中的所有附带的文件夹。你不需要把它传给别名,因为它只是一个别名。

文件夹的名称取决于MySQL的安装版本。

这是macOS中MySQL数据库最简单的“PID”错误解决方案:

执行如下命令:

$ sudo mysql.server start
Starting MySQL
.. SUCCESS! 

使用此命令访问数据库:

$ mysql -u root

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 19
Server version: 8.0.31 Homebrew

Copyright (c) 2000, 2022, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;
Database
information_schema
mysql
performance_schema
sys
4 rows in set (0.00 sec)

对我来说,我必须重新安装MySQL:

brew reinstall mysql

然后按下面的命令启动MySQL,在登录时重新启动:

brew services start mysql

我使用

全新的MacBook Pro,搭载OS X v10.7.3操作系统。x(狮子) 通过OS X GCC安装程序

我使用Homebrew ('brew install MySQL ')安装MySQL。它安装了几个依赖项,然后安装了MySQL。

当我试着启动它时,

mysql.server start

Starting MySQL
.. ERROR! The server quit without updating PID file (/usr/local/var/mysql/west.local.pid).

我执行这个命令,

/usr/local/Cellar/mysql/5.5.25/scripts/mysql_install_db

和MySQL工作。

请注意,您需要从MySQL目录的顶层运行mysql_install_db(例如,usr/local/Cellar/ MySQL /5.5.25)。直接在/scripts目录中运行它并不能为它提供足够的上下文来运行它。

我通过跑步解决了这个问题

sudo chown -R myUserName /usr/local/var/mysql

这里myUserName是我当前的登录用户名。