mysql root 无法在 linux 本地登陆

mysql 授权

1.让用户在所有ip都可以登录

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

flush privileges;

2.让用户在指定ip可以登录

GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'192.168.1.3' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;

flush privileges;

3.如果用户无法从本地登陆，这个时候就执行如下

GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost.localdomain' IDENTIFIED BY '123456' WITH GRANT OPTION;

flush privileges;

4.如果用户依然无法从本地登陆，这个时候就执行如下

GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '123456' WITH GRANT OPTION;

flush privileges;

5.如果还无法本地登陆，并且报错是无法找到 mysql.sock 文件，需要修改一下 my.cnf 文件

添加如下内容：

[mysql.server]

user=mysql

basedir=/opt/tools/mysql

[client]

#这个是 sock 文件位置

socket=/opt/tools/mysql/mysql.sock

完整的 my.cnf 文件配置

[mysqld]

#datadir=/var/lib/mysql

#socket=/var/lib/mysql/mysql.sock

datadir=/opt/tools/mysql

socket=/opt/tools/mysql/mysql.sock

user=mysql

default-character-set=utf8

log-slow-queries = /opt/logs/mysql/slowquery.log

long_query_time = 1 #单位是秒

log-queries-not-using-indexes

# Disabling symbolic-links is recommended to prevent assorted security risks

set-variable=max_connections=1000

max_allowed_packet=20M

innodb_buffer_pool_size=1G

# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0

[mysql.server]

user=mysql

basedir=/opt/tools/mysql

[client]

socket=/opt/tools/mysql/mysql.sock

[mysqld_safe]

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

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