MySQL 服务无法启动问题如何解决

摘要

在官网下载了mysql，版本mysql-5.7.17-winx64，免安装的压缩包，解压后。放在MySql的文件夹中。电脑系统win10 x64.

配置文件

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html# *** DO NOT EDIT THIS FILE. It's a template which will be copied to the# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of MySQL.

[mysqld]

# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M

# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin

# These are commonly set, remove the # and set as required.
basedir =C:\Program Files\MySql\mysql-5.7.17-winx64
datadir =C:\Program Files\MySql\mysql-5.7.17-winx64\data
# port = .....
# server_id = .....


# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

修改了basedir和datadir配置。

添加环境变量

我的电脑->属性->环境变量-PATH

C:\Program Files\MySql\mysql-5.7.17-winx64\bin;

管理员身份运行CMD，并进入bin目录。安装mysql。命令：mysqld -install

然后启动mysql。

出现这个错误尝试很多方法解决，最后将自己手动创建的data文件夹删除，然后运行初始化命令而解决。

初始化命令：mysqld --initialize

初始化过程中，会data创建很多的文件，如图所示：