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要求：rpm包已经上传至/opt/mysql目录下面，现在需要自动安装MySQL，并且将root初始密码设置成为123456。
背景：连续帮忙几个同事安装了MySQL，感觉挺烦人的，于是就写了自动化部署脚本。再有人过来找我，我就让他们自己上传软件包跑脚本。
参考代码：
#!/bin/bash
package_dir="/opt/mysql"
cd ${package_dir}
server=`find -maxdepth 1 -name '*mysql*'|grep server|awk -F "/" '{print $2}'`
client=`find -maxdepth 1 -name '*mysql*'|grep client|awk -F "/" '{print $2}'`
echo $server
echo $client
function install_mysql(){
echo "正在安装MySQL-server..."
echo ""
echo "正在卸载系统自带数据库"
yum remove all mysql -y
rm -rf /var/lib/mysql/*
rm -rf /etc/my.cnf
rm -rf /etc/init.d/mysqld
rm -rf /var/log/mysql*
timedatectl set-timezone Asia/Shanghai
yum install libaio\* apt-get\* numactl -y
clear
echo "正在安装server..."
rpm -ivh $server --force --nodeps
if [ $? -ne 0 ];then
break
else
clear
echo "MySQL-server安装完成！"
fi
echo "正在安装MySQL-client..."
rpm -ivh $client --force --nodeps
if [ $? -ne 0 ];then
break
else
clear
echo "MySQL-client安装完成！"
fi
}
function auto_start(){
echo "正在设置开机启动..."
chmod +x /etc/rc.d/rc.local #因为有一次发现软连接失效了，所以还是直接使用这个文件保险
chmod +x /etc/rc.local
sed -i '$a\mkdir -p /var/run/mysqld/' /etc/rc.d/rc.local
sed -i '$a\service mysqld start' /etc/rc.d/rc.local
sed -i '$a\chmod 777 /var/run/mysqld/' /etc/rc.d/rc.local
echo "开机启动设置完成！"
}
function startup(){
echo "正在启动数据库..."
service mysqld start
if [ $? -eq 0 ]; then
if netstat -ntulp |grep -q 3306
then
echo "启动成功！"
else
echo "数据库启动失败，请检查日志..."
fi
else
echo "数据库启动失败，请检查日志"
fi
}
function reset_password(){
read -p "修改密码请按：enter 键（首次登录修改密码请按1）" option
if [ $option == "1" ]; then
echo "正在重置密码(仅限第一次修改密码使用)..."
sed -i '$a validate-password=off' /etc/my.cnf
service mysqld restart
old_password=`grep 'temporary password' /var/log/mysqld.log|awk '{print $NF}'`
echo ""
echo -e "\033[5;34m 首次登录修改密码的命令为:\033[0m \033[31m ALTER USER 'root'@'localhost' IDENTIFIED BY \033[0m '\033[32mnew_password\033[0m' "
echo ""
sleep 3
mysql -uroot -p"${old_password}"
echo "重置完成！"
else
read -p "请输入原密码：" pswd
echo -e "\033[5;34m 修改密码的命令为:\033[0m \033[31m update mysql.user set authentication_string=password('new_password') where User='USER'\033[0m "
echo ""
mysql -uroot -p"${pswd}"
echo "密码重置完成！"
fi
}
function menu {
clear
echo
echo -e "\t\t\tMySQLauto install Menu\n"
echo -e "\t1. MySQL软件安装"
echo -e "\t2. 设置开机启动"
echo -e "\t3. 启动数据库"
echo -e "\t4. 重置数据库密码"
echo -e "\t0. Exit program\n\n"
echo -en "\t\tEnter option: "
read -n 1 option
}
while [ 1 ]
do
menu
case $option in
0)
break ;;
1)
echo ""
install_mysql;;
2)
echo ""
auto_start ;;
3)
echo ""
startup ;;
4)
echo ""
reset_password ;;
*)
clear
echo "Sorry, wrong selection";;
esac
echo -en "\n\n\t\t\tHit any key to continue"
read -n 1 line
done
clear
来源：https://www.cnblogs.com/tanshouke/p/12579273.html