下面给大家分享一个超级棒的mysql数据库一键安装脚本，此脚本已在实践中检验，没有任何问题，请大家放心使用。
#!/bin/bash
echo -e "\e[31m****一键安装mysql任何版本数据库***\e[0m"
echo -e "输入安装版本，如\e[31m8.0.27\e[0m"
read version
find / -name mysql | xargs rm -rf
port=$(netstat -antup|grep mysql|wc -l)
if [ $port != 0 ]
then echo "mysql进程存在,请先杀掉进程"
ps -ef |grep mysqld
exit 1
fi
echo "-------------------创建所需目录及用户并上传安装包-------------------"
mkdir -p /data/mysql
groupadd mysql
useradd -r -g mysql mysql
cd /opt/
tar -xvf mysql-$version-linux-glibc2.12-x86_64.tar.xz
mv mysql-$version-linux-glibc2.12-x86_64/ /usr/local/
cd /usr/local/
mv mysql-$version-linux-glibc2.12-x86_64/ mysql
chown -R mysql.mysql /usr/local/mysql/
echo "----------------卸载原有的mysql组件-------------------"
yum list installed | grep mariadb
yum -y remove mariadb*
yum remove mariadb*
chown mysql:mysql -R /data/mysql
touch /etc/my.cnf
chmod 644 /etc/my.cnf
MYSQL_ROOT_PASSWORD=123456
cat <<EOF >/etc/my.cnf
[mysqld]
user=mysql
basedir=/usr/local/mysql
datadir=/data/mysql
socket=/tmp/mysql.sock
log-error=/data/mysql/mysql.err
pid-file=/data/mysql/mysql.pid
server_id=1
port=3306
character-set-server=utf8
innodb_rollback_on_timeout = ON
character-set-server = utf8
collation-server=utf8_general_ci
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
lower_case_table_names=1
max_connections=10000
sync_binlog=1
binlog_format=row
[mysql]
socket=/tmp/mysql.sock
default-character-set=utf8
[client]
EOF
echo "----------------启动MYSQL service-------------------"
echo "----------------初始化数据库-------------------"
cd /usr/local/mysql/bin
./mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql/ --datadir=/data/mysql/ --user=mysql --initialize
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
path=$(grep 'MYSQL_HOME' /etc/profile|wc -l)
if [ $path != 0 ]
then
echo -e "\e[31m MYSQL_HOME路径存在\e[0m"
else
echo "export MYSQL_HOME=/usr/local/mysql/bin" >> /etc/profile
echo "export PATH=\$PATH:\$MYSQL_HOME" >> /etc/profile
source /etc/profile
fi
service mysql start
echo 'export PATH=$PATH:/usr/local/mysql/bin:/usr/local/mysql/lib'>>/etc/profile
source /etc/profile
cat /data/mysql/mysql.err|grep password
chkconfig --add mysql
chkconfig mysql on
chkconfig --list mysql
MYSQL_OLDPASSWORD=`awk '/A temporary password/{print $NF}' /data/mysql/mysql.err`
mysqladmin -uroot -p${MYSQL_OLDPASSWORD} password ${MYSQL_ROOT_PASSWORD}
mysql -uroot -p123456 -e "update mysql.user set host ='%' where user ='root';"
mysql -uroot -p123456 -e "flush privileges;"
mysql -uroot -p123456
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