centos7安装mysql

最近看到一篇写安装mysql的blog，感觉很好，做了一个自动化安装脚本，方便以后的安装。这个脚本有个缺陷就是：必须在执行完成后，必须自己敲一下回车。然后将完成了blog所说的安装mysql和相关配置内容。PS.将root用户的密码，设置为了root。

#!/bin/bash
#install mysql.
echo y | yum install mysql
if [  $? -ne  0 ];then
echo "yum install mysql failed"
exit 1
fi

#download mysql-server
wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm if [ $? -ne 0 ];then
echo "wget is not installed"
yum -y install wget
wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm if [ $? -ne 0 ];then
echo "download mysql-server failed."
exit 1
fi
fi

#install mysql-server
rpm -ivh mysql-community-release-el7-5.noarch.rpm
if [ $? -ne 0 ];then
echo "rpm -ivh mysql-community-release-el7-5.noarch.rpm failed"
exit 1
fi
#install mysql-community-server
yum install -y mysql-community-server
if [ $? -ne 0 ];then
echo "rpm -ivh mysql-community-server failed"
exit 1
fi

#install mysql-devel
yum -y install mysql-devel
if [ $? -ne 0 ];then
echo "yum install mysql-devel failed"
exit 1
fi

#set character-set in /etc/my.cnf
if [ ! -f "/etc/my.cnf" ];then
echo "/etc/my.cnf doesn't exists. set character-set failed."
exit 1
fi
echo "[mysql]">> /etc/my.cnf
echo "default-character-set =utf8">> /etc/my.cnf

#restart mysql
service mysqld restart
if [ $? -ne 0 ];then
echo "service mysqld restart failed."
exit 1
fi

# execute sql modify password to root
#grant all table permission to root user in any IP.

echo -e "\n" | mysql -u root -p -e "
USE mysql;
grant all privileges on *.* to root@'%'identified by 'root';
UPDATE user SET Password = password ('root') WHERE User = 'root' ;
flush privileges;
quit"

参考地址：

http://blog.csdn.net/qinglu000/article/details/43734471

https://www.cnblogs.com/starof/p/4680083.html

mysql下编码是一个比较棘手的问题。这里小结一下。

http://blog.csdn.net/guchuanhang/article/details/78612536