1、Mysql自动安装5.7Shell脚本

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新建执行脚本：mysql_install.sh，并添加执行权限

#!/bin/bash

#zhouyihua V0.1 2021.07.08

#For centos 7.0

# add DNS

echo "----------  Add DNS  --------"

echo "nameserver 8.8.8.8" >>/etc/resolv.conf

#stop firewall

systemctl stop firewalld

if [ $? -ne 0 ]then

    echo "Firewall stop failed"

else

    echo "Firewall stop success"

fi

#download mysql yum source

wget https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm

#install mysql yum source

rpm -ivh mysql80-community-release-el7-3.noarch.rpm

#enable 5.7

sed -i '21s/enabled=0/enabled=1/g' /etc/yum.repos.d/mysql-community.repo

sed -i '21s/enabled=0/enabled=1/g' /etc/yum.repos.d/mysql-community.repo

#disable 8.0

sed -i '28s/enabled=1/enabled=0/g' /etc/yum.repos.d/mysql-community.repo

#install mysql

yum -y remove mariadb-libs

yum install -y mysql-community-server

#config mysql

echo "-----------  Config my.cnf  ----------"

sed -i '/\[mysqld\]/a\lower_case_table_names=1' /etc/my.cnf

sed -i '/\[mysqld\]/a\skip-grant-tables' /etc/my.cnf

#start mysql

echo "----------  Starting mysql service  ----------"

systemctl start mysqld.service

mysql -uroot -p123456  <<EOF

    use mysql

    update mysql.user set authentication_string=password('Oracle1234!@#$') where user='root'

EOF

echo "----------  Annotation skip grant tables in my.cnf    ----------"

sed -i 's/skip-grant-tables/\#skip-grant-tables/g' /etc/my.cnf

echo "----------  Restart mysql service  ----------"

systemctl restart mysqld.service

echo "----------  Grant all privileges  ----------"

mysql -uroot -p'Oracle1234!@#$'    --connect-expired-password -e "alter user 'root'@'localhost' identified by 'Oracle1234!@#$'"

mysql -u root -p'Oracle1234!@#$'  <<EOF

    use mysql

    GRANT ALL PRIVILEGES ON *.* TO 'iam'@'%' IDENTIFIED BY 'Oracle1234!@#$'

EOF

shell脚本中执行mysql 语句

去除warning using a password on the command line interface can be insecure信息

使用mysql参数的方法

mysql -u pass -D $db -e "select host from user"

如

/usr/local/u-mail/service/mysql/bin/mysql -uumail -p cat /usr/local/u-mail/config/mysql_password.conf -e 'use umailselect count(*) from core_mailbox where domain="comingchina.net"'

可以使用

2>&1 |grep -v Warning

2>&1 的意思就是将标准错误重定向到标准输出。然后在使用 grep -v去除

&11标识标准输出，stdout。

2 表示标准错误，stderr。

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