安装mysql 5.7.20

5.7.20 下载页面 https://dev.mysql.com/downloads/file/?id=473559

# 创建用户组

检查 id mysql
 
groupadd mysql
useradd -r -g mysql mysql

# 解压

tar -xvf mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz -C /usr/local/
cd  /usr/local/
mv mysql-5.7.20-linux-glibc2.12-x86_64 mysql

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

yum -y install libaio

# 初始化数据库
cd /usr/local/mysql/bin

./mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --lc_messages_dir=/usr/local/mysql/share --lc_messages=en_US

# 获取初始登录密码 【shell界面会出现，或者相关日志可以查到】

root@localhost: tZAnKmkch8

 

# 配置cnf
cd /usr/local/mysql/support-files/
cp -rp my-default.cnf /etc/my.cnf

vim /etc/my.cnf

[mysqld]
collation-server =utf8_general_ci
init-connect='SET NAMES utf8'
character-set-server = utf8
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/tmp/mysql.sock
log-error=/var/log/mysqld.log
pid-file=/usr/local/mysql/mysqld.pid

[client]
default-character-set=utf8
[mysql]
default-character-set=utf8

# 设置开机启动项

cp -rp mysql.server /etc/init.d/mysqld
 
# 使用service 提供服务

service mysqld start

export PATH="/usr/local/mysql/bin:$PATH"
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

mysql -uroot -p tZAnKmkch8

alter user root@'localhost' identified by '123456';