腾讯云安装MYSQL远程连接不上解决方案

推荐安装步骤博客，写的很详细，如果不会安装的话，可以根据安装步骤一直走。

Windows10下超详细Mysql安装_win10安装mysql-CSDN博客

修改 my.cnf或者my.ini 找到里面bind-address将bind-address = 127.0.0.1设置成bind-address = 0.0.0.0（设备地址）或者直接注释该行设置完重启mysql

mysql 8.0找不到my.ini配置文件

直接在bin文件夹同级目录，新建my.ini文件。
添加内容如下：

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/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.
[client]
default-character-set = utf8mb4
[mysql]
default-character-set = utf8mb4
[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_bin
init_connect='SET NAMES utf8mb4'
# 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 = D:\MySQL
datadir = D:\MySQL\data
port = 3306
server_id = 1
# 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 = 16M
read_rnd_buffer_size = 16M 
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

或者直接添加你需要修改的内容

[mysqld]
bind-address = 0.0.0.0

mysql没有开启远程连接

一、改表法。

可能是你的帐号不允许从远程登陆，只能在localhost登录。这个时候只要在localhost的那台电脑，登入mysql后，更改 "mysql" 数据库里的 "user" 表里的 "host" 项，从"localhost"改把host更改为"%"

a. bin/mysql -uroot -p密码

b. use mysql----->show tables;------>select host, user from user;

c. update user set host = '%' where user = 'root';

d. flush privileges;

二、授权法。

例如，你想myuser使用mypassword从任何主机连接到mysql服务器的话。

GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

如果你想允许用户xiefei从ip为172.22.254.1的主机连接到mysql服务器，并使用123456作为密码 .

GRANT ALL PRIVILEGES ON *.* TO 'xiefei'@'172.22.254.1' IDENTIFIED BY '123456' WITH GRANT OPTION;

如果你在执行 GRANT 语句时遇到错误，可能是因为你的语法或者MySQL版本的问题。在MySQL 5.7及之后的版本中，GRANT 语句和 CREATE USER 语句是分开的，这意味着你不能直接在 GRANT 语句中创建用户并设置密码。你需要首先使用 CREATE USER 语句创建用户，然后设置密码，最后使用 GRANT 语句赋予权限。

-- 创建用户

CREATE USER 'root'@'%' IDENTIFIED BY 'smdc$#0510';

-- 刷新权限，使创建用户的操作立即生效

FLUSH PRIVILEGES;

-- 赋予用户所有权限

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;

-- 再次刷新权限，使权限更改立即生效

FLUSH PRIVILEGES;

如果这些设置以后仍然无法实现连接的话，考虑是否将端口开放