mysql8shell使用方法_Shell学习成果之一键自动安装Mysql8.0

实验环境

系统&＃xff1a;CentOS7.7.1908

MySql&＃xff1a;mysql-8.0.18-el7-x86_64.tar.gz

一键安装脚本如下(可直接复制粘贴为shell脚本&＃xff0c;与MySQL安装包放到同一目录&＃xff1b;如果没有下载安装包就取消第26行的注释会自动下载MySQL安装包)

*************************************************************************START************************************************************************

#!/bin/bash

#auto install mysql8.0

#by 网络小虾米 2019-11-19

olddb&＃61;&＃96;rpm -qa|grep mariadb&＃96; &&rpm -e --nodeps $olddb ;

useradd -M -s /sbin/nologin mysql &&

mkdir -p /usr/local/mysql &&

mkdir -p /usr/local/mysql/data &&

mkdir -p /usr/local/mysql/log &&

mkdir -p /usr/local/mysql/log/binlog &&

mkdir -p /usr/local/mysql/log/tmp &&

touch /usr/local/mysql/log/mysqld.log &&

chmod -R 777 /usr/local/mysql/log/ &&

chmod -R 777 /usr/local/mysql/data &&

chown -R mysql:mysql /usr/local/mysql/

if [ $? -eq 0 ];then

echo -e " 33[32mMysql environment Great Sueecssfully! 33[0m"

else

echo -e " 33[32mMysql environment Great Failed,Please check it. 33[0m"

exit

fi

#wget -c  https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.18-el7-x86_64.tar.gz ;

tar -xzvf mysql-8.0.18-el7-x86_64.tar.gz &&

mv mysql-8.0.18-el7-x86_64/* /usr/local/mysql/ ;

cd /usr/local/mysql &&/usr/local/mysql/bin/mysqld --initialize --user&＃61;mysql --basedir&＃61;/usr/local/mysql/ --datadir&＃61;/usr/local/mysql/data/ --log-error&＃61;/usr/local/mysql/log/mysqld.log ;

if [ $? -eq 0 ];then

echo -e " 33[32mMysql8.0 install complete! 33[0m"

else

echo -e " 33[32mMysql8.0 install Failed.please check it. 33[0m"

exit

fi

touch /etc/my.cnf ;

echo "

[client]

port&＃61;3306

default-character-set&＃61;utf8

[mysqld]

port&＃61;3306

basedir&＃61;/usr/local/mysql

datadir&＃61;/usr/local/mysql/data

user&＃61;mysql

default-storage-engine&＃61;INNODB

character-set-server&＃61;utf8

bind-address&＃61;0.0.0.0

[mysqld_safe]

log-error&＃61;/usr/local/mysql/log/mysqld.log" >> /etc/my.cnf ;

chmod 644 /etc/my.cnf &&chown -R mysql:mysql /etc/my.cnf ;

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld ;

sed -i "46s/basedir&＃61;/basedir&＃61;/usr/local/mysql/g" /etc/init.d/mysqld &&sed -i "47s/datadir&＃61;/datadir&＃61;/usr/local/mysql/g" /etc/init.d/mysqld ;

chmod &＃43;x /etc/init.d/mysqld &&service mysqld start

if [ $? -eq 0 ];then

echo -e " 33[32mMysql 8.0 auto install successfully! 33[0m"

else

echo -e " 33[32mMysql8.0 auto install Failed,Please check it. 33[0m"

exit

fi

echo "export PATH&＃61;$PATH:/usr/local/mysql/bin" >>/etc/profile &&source /etc/profile ;

chkconfig  --add mysqld &&chkconfig mysqld on

exit

**************************************************************************END*************************************************************************

脚本运行完成后&＃xff0c;MySql安装完成并启动&＃xff0c;然后修改默认密码

#cat /usr/local/mysql/log/mysqld.log

一般在日志的第二行&＃xff0c;找到[Server] A temporary password is generated for root&＃64;localhost: d5iGg/rg0ogC  //冒号后面的是默认密码

#mysql -uroot -p

#Enter password:d5iGg/rg0ogC 根据实际密码进行输入

#alter user "root"&＃64;"localhost" identified by "qwe123!&＃64;#";

#flush privileges;

设置远程访问

>use mysql;

>select host, user, plugin from user;

>alter user "root"&＃64;"localhost" identified with mysql_native_password by "qwe123!&＃64;#";

>update user set host&＃61;"%" where user&＃61;"root";

>flush privileges;

>grant all privileges on *.* to "root"&＃64;"%" with grant option;

>flush privileges;

>select host, user, authentication_string, plugin from user;

>exit;

排错

### /usr/local/mysql/bin/mysqld safe--defaults-file&＃61;/etc/my.cnf --user&＃61;mysql###安全模式启动mysql