#!/bin/bash

#MySQL一键安装脚本

#脚本运行前请确认本机没有安装其他版本的MySQL

#运行脚本前请详细阅读my.cnf文件

PASSWORD=`cat my.cnf | grep password | awk -F '=' '{print $2}'` #数据库root用户密码(在my.cnf文件中修改)

MYSQL_FILE='mysql-5.7.25-linux-glibc2.12-x86_64.tar.gz' #二进制安装包名

MYSQL_SIGN=`echo ${MYSQL_FILE} | sed 's/.......$//'` #解压后安装包名

INSTALL_DIR='/usr/local' #安装路径

DATA_DIR=`cat my.cnf | grep datadir | awk -F '=' '{print $2}'` #数据库文件存放路径(在my.cnf文件中修改)

if [ -e ${INSTALL_DIR}/mysql ];then echo -e "\033[31m错误:${INSTALL_DIR}/mysql已存在，无法安装\033[0m" ; exit 1 ; fi

if [ -e ${DATA_DIR} ];then echo -e "\033[31m错误:${DATA_DIR}已存在，无法安装\033[0m" ; exit 2 ; fi

INSTALL(){

yum -y install libaio >/dev/null 2>&1

LIBAIO=`yum list installed | grep libaio | wc -l`

if [ ${LIBAIO} -eq 0 ];then echo -e "\033[31m错误: libaio 扩展库安装失败\033[0m" ; exit 3 ; fi

tar zxf ${MYSQL_FILE}

mv ${MYSQL_SIGN} ${INSTALL_DIR}/${MYSQL_SIGN}

ln -s ${INSTALL_DIR}/${MYSQL_SIGN} ${INSTALL_DIR}/mysql

}

INSTALL

#安装

CREATE_GRANT(){

groupadd mysql

useradd -r -g mysql -s /bin/false mysql

mkdir ${INSTALL_DIR}/${MYSQL_SIGN}/mysql-files

chmod 750 ${INSTALL_DIR}/${MYSQL_SIGN}/mysql-files

chown mysql:mysql -R ${INSTALL_DIR}/${MYSQL_SIGN}

mkdir ${DATA_DIR}

chown mysql:mysql -R ${DATA_DIR}

cp my.cnf /etc/my.cnf

}

CREATE_GRANT

#创建数据文件夹与mysql-file文件夹并授予权限

INITIALIZE(){

${INSTALL_DIR}/mysql/bin/mysqld --initialize --user=mysql

${INSTALL_DIR}/mysql/bin/mysql_ssl_rsa_setup >/dev/null 2>&1

${INSTALL_DIR}/mysql/bin/mysqld_safe --user=mysql &

for i in `seq 10`

do

sleep 5

PORT=`netstat -anptu | grep 3306 | wc -l`

if [ ${PORT} -ne 0 ];then break ;fi

done

}

INITIALIZE

#初始化mysql并开启ssl文件传输

UPDATA_PASS(){

AUTO_PASSWORD=`cat ${DATA_DIR}/error.log | grep password | awk '{print $NF}' | head -1`

${INSTALL_DIR}/mysql/bin/mysqladmin -uroot -p"${AUTO_PASSWORD}" password ${PASSWORD}

}

UPDATA_PASS

#修改自动生成密码，修改后密码在配置文件password项设置

CONTROL(){

cp ${INSTALL_DIR}/mysql/support-files/mysql.server /etc/init.d/mysql.server

}

#CONTROL

#mysql控制命令 可以直接启动/重启/停止mysql服务