mysql 7.5.8 服务无法启动 服务没有报告任何错误

你安装的mysql位置不是c盘的话应该出现此问题。

1.打开bin下的mysql_config.pl文件，查找以下几行，把目录改成你安装mysql的目录即可。

my $ldata   = 'C:/Program Files/MySQL/MySQL Server 5.7/data';
my $execdir = 'C:/Program Files/MySQL/bin';
my $bindir  = 'C:/Program Files/MySQL/bin';

my $pkglibdir = fix_path('C:/Program Files/MySQL/lib',"libmysql/relwithdebinfo",
                         "libmysql/release","libmysql/debug","lib/mysql","lib");

my $pkgincludedir = fix_path('C:/Program Files/MySQL/include', "include/mysql", "include");

我是安装在D盘所以改成了如一下几行：

my $ldata   = 'D:/Program Files/MySQL/MySQL Server 5.7/data';
my $execdir = 'D:/Program Files/MySQL/bin';
my $bindir  = 'D:/Program Files/MySQL/bin';

my $pkglibdir = fix_path('D:/Program Files/MySQL/lib',"libmysql/relwithdebinfo",
                         "libmysql/release","libmysql/debug","lib/mysql","lib");

my $pkgincludedir = fix_path('D:/Program Files/MySQL/include', "include/mysql", "include");

2.以管理员身份运行cmd，输入:mysqld -install(如果不用管理员身份运行，将会因为权限不够而出现错误：Install/Remove of the Service Denied!)

3.运行mysqld  --initialize（标题问题所在，若没有init则不存在data目录，自然无法启动成功）

4.安装成功后就要启动服务了，继续在cmd中输入:net start mysql,服务启动成功！

5.服务启动成功之后，就可以登录了

在mysql目录下搜索*.err，以文本形式打开才能看到如下内容：

016-02-25T15:09:43.033062Z 1 [Note] A temporary password is generated for root@localhost: >mso<k70mrWe

红色字母即为第一次的登陆密码，记得加双引号。

输入mysql -u root -p回撤输入密码即可登录

6.修改密码

格式：mysql> set password for 用户名@localhost = password('新密码');