centos7 shell 脚本一键安装mysql

使用shell脚本在CentOS上一键下载、安装、登录mysql，自动创建myapp数据库

#1. check if download the mysql rpm package,if not,download

ql_rpm_package=`find / -name "mysql*release*rpm*"`
mysql_rpm_package_name=mysql*release*rpm*
if [ `find / -name "mysql*release*rpm*"|wc -l` -ne 0 ];then
echo -e "yes,you have the mysql rpm package,it's in :\n$mysql_rpm_package\n"
else
echo -e "you don't have the mysql rpm pakage,now we start download\n------------------------"
wget https://repo.mysql.com//mysql57-community-release-el7-11.noarch.rpm echo -e "complete download mysql rpm\n"
fi

#2. check if install local mysql rpm ,if not,install

if [ `rpm -qa|grep mysql_rpm_package_name|wc -l` -ge 1 ];then
echo -e "yes,you have installed local mysql rpm:"
rpm -qa | grep mysql_rpm_package_name
echo
else
echo -e "begin install rpm kagage\n-------------------------"
yum localinstall mysql57-community-release-el7-11.noarch.rpm
echo -e "complete install mysql rpm package,these are mysql in yum repository list:"
yum repolist enabled|grep mysql
echo
fi

# 3.check if install mysql,if not,install

if [ `rpm -qa|grep mysql|wc -l` -gt 1 ];then
echo -e "yes,you have installed mysql:"
rpm -qa |grep mysql
echo
else
echo -e "you don't install mysql,now we start install mysql\n-----------------------"
yum install mysql-community-server
echo -e "complete install mysql,these are the all installed:"
rpm -qa|grep mysql
echo
fi

#4. start mysql
echo -e "start mysql"
systemctl start mysqld
echo -e "mysql has started\n"

#5. set mysql start when we start the CentOS

echo -e "set mysql start when we start the CentOS"
systemctl enable mysqld
systemctl daemon-reload
echo -e "set succeed\n"

# 6.login mysql use root and initial password

USERNAME=root
INITIAL_PASSWORD=$(awk '/temporary password/{print $NF}' /var/log/mysqld.log)
echo -e "your initial mysql password for root is:\n$INITIAL_PASSWORD"
echo -e "login mysql: -----------------"
mysql -u$USERNAME -p$INITIAL_PASSWORD << EOF
create database if not exists myapp;
show databases;
EOF
echo -e "\ncomplete login and create database myapp!"