MySql安装

1、

yum -y install libaio
wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz

2、

cd /usr/local/soft/mysql/src
mkdir ../5.7.24_3306 && tar -xzvf mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz -C ../5.7.24_3306 --strip-components 1

3、

mkdir -p /usr/local/soft/mysql/5.7.24_3306/{run,data,logs,bin_log,sock,cert}

4、

groupadd mysql && useradd -r -g mysql -s /bin/false mysql

5、

cd /usr/local/soft/mysql/5.7.24_3306/bin && ./mysqld --initialize
--explicit_defaults_for_timestamp
--user=mysql
--basedir=/usr/local/soft/mysql/5.7.24_3306
--datadir=/usr/local/soft/mysql/5.7.24_3306/data
--lc_messages_dir=/usr/local/soft/mysql/5.7.24_3306/share
--lc_messages=en_US

6、

2018-12-01T09:56:45.934627Z 0 [Warning] InnoDB: New log files created, LSN=45790
2018-12-01T09:56:46.056837Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2018-12-01T09:56:46.127141Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 69d028f9-f54f-11e8-9c4a-00163e08e793.
2018-12-01T09:56:46.130249Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2018-12-01T09:56:46.131377Z 1 [Note] A temporary password is generated for root@localhost: sDdPx3>.,oBi

7、可忽略此操作

cd /usr/local/soft/mysql/5.7.24_3306/bin && ./mysql_ssl_rsa_setup --datadir=/usr/local/soft/mysql/5.7.24_3306/cert
修改证书权限为644

8、

8.1
编辑mysql.server 添加datadir

8.2
touch /usr/local/soft/mysql/5.7.24_3306/logs/error.err
chown -R mysql:mysql /usr/local/soft/mysql/5.7.24_3306
cd /usr/local/soft/mysql/5.7.24_3306/support-files && ./mysql.server start

9、

cd /usr/local/soft/mysql/5.7.24_3306/bin && ./mysql -uroot -S /usr/local/soft/mysql/5.7.24_3306/sock/mysql.sock

10、

use mysql;
update user set host = '%', authentication_string = password('123456') where user = 'root';
select host,user,authentication_string from user;
flush privileges;

grant all privileges on . to 'root'@'%';
flush privileges;

11、

cat >/etc/systemd/system/3306.service <<EOF
[Unit]
Description=MySQL 3306
Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html
After=network.target remote-fs.target nss-lookup.target

[Service]
Type=forking
PIDFile=/usr/local/soft/mysql/5.7.24_3306/run/mysql.pid
ExecStart=/usr/local/soft/mysql/5.7.24_3306/support-files/mysql.server start
ExecReload=/usr/local/soft/mysql/5.7.24_3306/support-files/mysql.server restart
ExecStop=/usr/local/soft/mysql/5.7.24_3306/support-files/mysql.server stop
PrivateTmp=true

[Install]
WantedBy=multi-user.target
EOF

12、开机启动

systemctl enable 3306.service

忘记密码

1、

以不启用grant-tables模式启动mysql

cd /usr/local/soft/mysql/5.7.24.3306/bin && ./mysqld_safe --skip-grant-tables &

为了安全可以这样禁止远程连接：

cd /usr/local/soft/mysql/5.7.24.3306/bin && ./mysqld_safe --skip-grant-tables --skip-networking &

2、
./mysql -uroot -p -S /usr/local/soft/mysql/5.7.24.3306/sock/mysql.sock

3、
use mysql;
update mysql.user set authentication_string=password('123456') where user='root';
flush privileges;

复制文件夹

mkdir -p /usr/local/soft/mysql/back/5.7.23_3306 && cp -Rf /usr/local/soft/mysql/5.7.23_3306/* /usr/local/soft/mysql/back/5.7.23_3306
mkdir -p /usr/local/soft/mysql/back/5.7.24_3306 && cp -Rf /usr/local/soft/mysql/5.7.24_3306/* /usr/local/soft/mysql/back/5.7.24_3306

创建用户

CREATE USER 'sdyc'@'%' IDENTIFIED BY '123456';
GRANT SELECT, INSERT, UPDATE, DELETE, EXECUTE ON sd_data.* TO 'sdyc'@'%';
GRANT SELECT, INSERT, UPDATE, DELETE, EXECUTE ON card_data.* TO 'sdyc'@'%';
SHOW GRANTS FOR sdyc;

CREATE USER 'back'@'localhost' IDENTIFIED BY '123456';
GRANT SELECT, RELOAD, PROCESS, SHOW DATABASES, SUPER, LOCK TABLES, REPLICATION CLIENT ON . TO 'back'@'localhost'
SHOW GRANTS FOR back;

REVOKE SELECT, INSERT, UPDATE, DELETE, EXECUTE ON sd_data.* FROM 'sdyc'@'%';