### 安装$Mysql$ $5.7$​



```shell
yum install lrzsz -y
mkdir /usr/local -p
cd /usr/local
rz -be  选择 mysql-5.7.42-el7-x86_64.tar.gz
tar -zxf mysql-5.7.42-el7-x86_64.tar.gz
mv mysql-5.7.42-el7-x86_64 mysql
rm -rf mysql-5.7.42-el7-x86_64.tar.gz

vi /etc/profile
#添加如下内容
export PATH=/usr/local/mysql/bin:$PATH
#然后source生效
source /etc/profile

#添加用户并授权相关
useradd mysql
id mysql
mkdir /data/mysql -p
chown -R mysql:mysql /usr/local/mysql/*
chown -R mysql:mysql /data/*

其中：
/usr/local/mysql/是MySQL软件所在目录。
/data/mysql是将来存放MySQL数据的目录。

#初始化数据库
mysqld --initialize-insecure  --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql


#配置文件

vi /etc/my.cnf

[mysqld]
user=mysql
basedir=/usr/local/mysql
datadir=/data/mysql
server_id=1
port=22066
socket=/tmp/mysql.sock
[mysql]
socket=/tmp/mysql.sock
```



#### 忽略大小写

```shell
lower_case_table_names=1
```





#### 管理MySQL_etc/init.d

```shell
mkdir /etc/init.d -p
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
```



#### 重定向文件

```
ln -s /usr/lib64/libncurses.so.6.2 /usr/lib64/libncurses.so.5
ln -s /usr/lib64/libtinfo.so.6.2 /usr/lib64/libtinfo.so.5

#启动、重启命令
service mysqld start
service mysqld restart
```



#### 重置密码

```
/etc/init.d/mysqld stop

mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
mysql
update mysql.user set authentication_string=PASSWORD("DsideaL147258369") where user='root' and host='localhost';

flush privileges;

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'IDENTIFIED BY 'DsideaL147258369' WITH GRANT OPTION; 

flush privileges;
exit

/etc/init.d/mysqld restart
mysql -uroot -pDsideaL147258369
```

现在用Navicat Prenium就可以远程访问到数据库了。

```
YLT项目中使用的用户名：ycharge，密码：ycharge 需要创建
CREATE USER 'ycharge'@'%' IDENTIFIED BY 'ycharge';
GRANT all privileges ON yltcharge.* TO 'ycharge'@'%';
FLUSH PRIVILEGES;
```



#### 创建使用账号

```sql
GRANT ALL PRIVILEGES ON *.* TO ycharge@"%" IDENTIFIED BY "ycharge";
flush privileges;
```