安装mysql5.7.20

rpm -qa|grep -i mysql 检查是否安装MySQL
rpm -e xxx --nodeps 卸载MySQL

https://dev.mysql.com/downloads/mysql/ 选择Linux Generic通用版和Compressed TAR Archive压缩源码,选择不登陆直接下载
windows可选择推荐的MSI二进制exe下载安装

tar -zxvf mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz
重命名 mv mysql-5.7.20-linux-glibc2.12-x86_64 mysql

查看用户 groups mysql
添加组和用户：groupadd mysql, useradd -r -g mysql mysql

mkdir /app/deploy/mysql_data

chown -R mysql:mysql /app/mysql

cd mysql
./bin/mysqld --initialize --user=mysql --basedir=/app/mysql --datadir=/app/deploy/mysql_data,使用mysql_install_db安装已过时
注意保存初始密码，如：.?earEtwf4ft

chown -R root:root /app/mysql
chown -R mysql:mysql /app/deploy/mysql_data

basedir=/app/mysql
datadir=/app/deploy/mysql_data

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

#set for mysql
export MYSQL_HOME=/app/mysql
export PATH=$PATH:$MYSQL_HOME/bin

chkconfig --level 35 mysql on

service mysql start/stop 直接kill进程会自动nohup重启mysql_safe

ps -ef|grep mysql

show databases
show tables
status
quit

mysql -u root -p 输入之前保存的密码登陆
SET PASSWORD = PASSWORD(‘lizhaobin995‘);
flush privileges;
只有初始化后才能操作，不用flush会自动刷新

use mysql;
select host, user from user;
update user set host = ‘%‘ where user = ‘root‘;

service mysql restart