linux 安装MySql 5.7.20 操作步骤

  • 第一步:下载mysql最新版
wget http://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz
  • 第二步:在/usr/local/中解压压缩包,并改名为mysql
  cd /usr/local/

  tar -xzvf /data/software/mysql-5.7.13-linux-glibc2.5-x86_64.tar.gz (我的下载目录为     data/software)

  mv mysql-5.7.13-linux-glibc2.5-x86_64 mysql
  • 第三步:创建用户组mysql,创建用户mysql并将其添加到用户组mysql中,并赋予读写权限
groupadd mysql

useradd -r -g mysql mysql

chown -R mysql mysql/

chgrp -R mysql mysql/
  • 第四步:创建配置文件
vim /etc/my.cnf

#复制以下内容

[client]
port = 3306
socket = /tmp/mysql.sock

[mysqld]
character_set_server=utf8
init_connect='SET NAMES utf8'
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/tmp/mysql.sock
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
#不区分大小写
lower_case_table_names = 1

sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

max_connections=5000

default-time_zone = '+8:00'

按ESC保存并关闭,输入如下命令

:wq!
  • 第五步:初始化数据库
#先安装一下这个东东,要不然初始化有可能会报错
yum install libaio
#手动编辑一下日志文件,什么也不用写,直接保存退出
cd /var/log/

vim mysqld.log
:wq

chmod 777 mysqld.log
chown mysql:mysql mysqld.log

/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
  • 第六步:查看初始密码
cat /var/log/mysqld.log

执行后关注最后一点:root@localhost: 这里就是初始密码

  • 第七步:启动服务,进入mysql,修改初始密码,运行远程连接(这里执行完后,密码将变成:你设置的新密码)
service mysqld start

#如果提示必须要修改密码才可以进行操作的话则执行下面操作
MySQL版本5.7.6版本以前用户可以使用如下命令:
mysql> SET PASSWORD = PASSWORD('Xiaoming250'); 
MySQL版本5.7.6版本开始的用户可以使用如下命令:
mysql> ALTER USER USER() IDENTIFIED BY 'Xiaoming250';


flush privileges;

UPDATE `mysql`.`user` SET `Host` = '%',  `User` = 'root'  WHERE (`Host` = 'localhost') AND (`User` = 'root');

#然后执行如下操作开启mysql服务,以及设置相关权限
cd /var/run/

mkdir mysqld

chmod 777 mysqld

cd mysqld

vim mysqld.pid

chmod 777 mysqld.pid

chown mysql:mysql mysqld.pid 

/usr/local/mysql/support-files/mysql.server start

/usr/local/mysql/bin/mysql -uroot -p 你在上面看到的初始密码

# 以下是进入数据库之后的sql语句
 use mysql;

 UPDATE `mysql`.`user` SET `Host`='%', `User`='root', `Select_priv`='Y', `Insert_priv`='Y', `Update_priv`='Y', `Delete_priv`='Y', `Create_priv`='Y', `Drop_priv`='Y', `Reload_priv`='Y', `Shutdown_priv`='Y', `Process_priv`='Y', `File_priv`='Y', `Grant_priv`='Y', `References_priv`='Y', `Index_priv`='Y', `Alter_priv`='Y', `Show_db_priv`='Y', `Super_priv`='Y', `Create_tmp_table_priv`='Y', `Lock_tables_priv`='Y', `Execute_priv`='Y', `Repl_slave_priv`='Y', `Repl_client_priv`='Y', `Create_view_priv`='Y', `Show_view_priv`='Y', `Create_routine_priv`='Y', `Alter_routine_priv`='Y', `Create_user_priv`='Y', `Event_priv`='Y', `Trigger_priv`='Y', `Create_tablespace_priv`='Y', `ssl_type`='', `ssl_cipher`='', `x509_issuer`='', `x509_subject`='', `max_questions`='0', `max_updates`='0', `max_connections`='0', `max_user_connections`='0', `plugin`='mysql_native_password', `authentication_string`='*6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9', `password_expired`='N', `password_last_changed`='2017-11-20 12:41:07', `password_lifetime`=NULL, `account_locked`='N' WHERE  (`User`='root');

 flush privileges;
  • 第八步:开机自启
cd /usr/local/mysql/support-files

cp mysql.server /etc/init.d/mysqld

chkconfig --add mysqld
  • 第九步:使用service mysqld命令启动/停止服务
su - mysql

service mysqld start/stop/restart

远程用户建立

grant all privileges on *.* to '新用户名'@'%' identified by '新密码';

flush privileges;

添加系统路径

vim /etc/profile

export PATH=/usr/local/mysql/bin:$PATH

source /etc/profile

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