tar -xvf mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz

mkdir -p /usr/local/mysql/data
mv mysql-5.7.17-linux-glibc2.5-x86_64/* /usr/local/mysql/

groupadd mysql

useradd -g mysql -d /usr/local/mysql mysql  

chown -R mysql.mysql /usr/local/mysql/

./bin/mysqld --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --initialize

root@localhost: >HLaOQH;U6L3

cp -a ./support-files/my-default.cnf /etc/my.cnf  #会有一个选择是否覆盖原有文件，直接按 y回车选择是就可以

# These are commonly set, remove the # and set as required.
basedir = /usr/local/mysql
datadir = /usr/localmysql/data
port = 3306
# server_id = .....
socket = /tmp/mysql.sock
character-set-server=utf-8

mysql/support-files/mysql.server restart

cp -a ./support-files/mysql.server /etc/init.d/mysqld

# cp /home/mysql/support-files/mysql.server /etc/init.d/mysqld   # 拷贝启动文件到/etc/init.d/下并重命令为mysqld
# chmod 755 /etc/init.d/mysqld                   # 增加执行权限
# chkconfig --list mysqld                      # 检查自启动项列表中没有mysqld这个，
# chkconfig --add mysqld                      # 如果没有就添加mysqld：
# chkconfig mysqld on                        # 用这个命令设置开机启动：

# ln -s /home/mysql/bin/mysql /usr/bin/mysql

# service mysqld start                        # 启动服务
# service mysqld restart                       # 重启服务
# service mysqld stop                        # 停止服务

./bin/mysqladmin -u root -p 或者 mysql -u root -p

>HLaOQH;U6L3

mysql> SET PASSWORD = PASSWORD('123456'); 

find / -name mysql.sock

show variables like 'character%'; # 查询编码
SET character_set_database = utf8;           ----设置编码

1)mysql> grant all privileges on *.* to 'root'@'%' identified by '123456';
2)grant all on *.* to 'root'@'%' identified by '123456';