一键安装mysql

#!/bin/bash
#
# Rrogram:
# install mysql
# History:
#    --    luoqi    v0. release
# email:
#    @qq.com
#以下rpm包需要自己下载并和该脚本放在同一目录下
#mysql-community-server-5.7.-.el7.x86_64.rpm mysql-community-client-5.7.-.el7.x86_64.rpm mysql-community-common-5.7.-.el7.x86_64.rpm #mysql-community-libs-5.7.-.el7.x86_64.rpm
#

# dependence
yum -y  install perl
yum -y  install -y perl-Module-Install.noarch
yum -y  install net-tools
#created by Kevin //, modify //
# -----------------------------------------------------------------------------
# Installation Script for the auto-deployment EMM(Linux edition)
# -----------------------------------------------------------------------------

# -----------------------------------------------------------------------------
# shell script to install MySQL (default version mysql-community-5.7.)

echo "-----------------------start install mysql----------------------"

# Add to mysql user and mysql group

if [ `grep "mysql" /etc/passwd | wc -l` -eq  ];then
echo "adding user mysql"
groupadd mysql
useradd -r -g mysql mysql
else
echo "mysql user is exist"
fi

# check installed mysql or not
for i in `rpm -qa | grep "mysql"`
do
rpm -e --allmatches $i --nodeps
done

# Remove pre-installed on OS MariaDB if exists

for i in $(rpm -qa | grep mariadb | grep -v grep)
do
  echo "Deleting rpm --> "$i
  rpm -e --nodeps $i
done

# Install mysqlserver
rpm -ivh mysql-community-server-5.7.-.el7.x86_64.rpm mysql-community-client-5.7.-.el7.x86_64.rpm mysql-community-common-5.7.-.el7.x86_64.rpm mysql-community-libs-5.7.-.el7.x86_64.rpm

# check the installtation was successful or not
rpm -qa |grep "mysql"
if [ $? !=  ];then
echo "mysql install fail"| tee $mysql_instlog
exit
else
echo "mysql isntall success"| tee $mysql_instlog
fi

# modify configuration files
cd /etc/
echo "character_set_server=utf8" >> my.cnf

# startup the mysql
systemctl start mysqld
systemctl status mysqld
/etc/init.d/mysqld start
/etc/init.d/mysqld stop

echo "MySQL Server install successfully!"

# configuration
cat /etc/my.cnf
sed -i '/mysqld/a\skip-grant-tables' /etc/my.cnf
systemctl restart mysqld
# mysql -u root mysql
mysql -u root mysql -e "use mysql;"
# use mysql
# update mysql.user set authentication_string=password('root') where user='root' ;
mysql -u root mysql -e "update mysql.user set authentication_string=password('root') where user='root' ;"
mysql -u root mysql -e "flush privileges;"

cat /etc/my.cnf
sed -i '/skip-grant-tables/s/^/#/' /etc/my.cnf
# mysql -u root -p
# SET PASSWORD = PASSWORD('root');
mysql -u root -proot --connect-expired-password -e "SET PASSWORD = PASSWORD('root');"
echo "install successfully!!"
# exit

https://dev.mysql.com/downloads/mysql/ 下载mysql