MySQL安装脚本最佳实践

 

#!/bin/bash

 

export host_ip=192.168.7.206

 

echo '#1.取master主机ip的后三位作为master的server_id'

export host_server_id=`echo $host_ip |awk -F . '{print $4}'`

 

 

 

echo '1.屏蔽当前的MySQL环境'

service mysql stop

rm -f /etc/my.cnf

 

echo '2.检查并卸载系统中低版本的mysql'

#rpm -e mariadb-libs --nodeps

 

echo '3.添加用户和组'

rm -rf /home/mysql/

userdel mysql

#groupdel mysql

groupadd  mysql

useradd -g mysql mysql

 

echo '4.创建目录及授权'

rm -rf /data

mkdir -p /data/mysql

mkdir -p /data/my3309/data

mkdir -p /data/my3309/log/iblog

mkdir -p /data/my3309/log/binlog

mkdir -p /data/my3309/log/relaylog

mkdir -p /data/my3309/run

mkdir -p /data/my3309/tmp

chown -R mysql:mysql /data/my3309

chmod -R 755 /data/my3309

 

echo '5.上传并解包软件包'

cd /softwares

tar zxf mysql-5.7.23-linux-glibc2.12-x86_64.tar.gz

cd mysql-5.7.23-linux-glibc2.12-x86_64

cp -R * /data/mysql/

chown -R mysql:mysql /data/

 

echo '6.修改配置文件my.cnf参数'

#手动上传写好的my.cnf配置文件

cp /scripts/my.cnf  /etc/

##cp /data/mysql/support-files/my-default.cnf  /data/mysql/my.cnf

#chown -R mysql:mysql /data/my3309

#cd /data/my3309/data

#rm -rf *

#cd /data/my3309/log

#rm -f binlog/*

#rm -f iblog/*

#rm -rf relaylog/

#rm -rf slow.log

 

echo '7.执行MySQL安装脚本'

cd /data/mysql/

bin/mysqld --initialize-insecure  --user=mysql --basedir=/data/my3309 --datadir=/data/my3309/data/   #必须到脚本的父目录执行哦

#./scripts/mysql_install_db  --defaults-file=/data/mysql/my.cnf  --user=mysql --datadir=/data/my3309/data

 

 

echo '#1.取master主机ip的后三位作为master的server_id'

export host_server_id=`echo $host_ip |awk -F . '{print $4}'`

#echo $host_server_id

 

eval sed -i 's/server_id=128/server_id=${host_server_id}/g' /etc/my.cnf

cat /etc/my.cnf |grep server_id

 

 

 

echo '8.修改系统环境变量'

echo "PATH=/data/mysql/bin:\$PATH:/sbin" >> /etc/profile

                                                                                                                                                                                                                                                                                                

 

echo '9.自启动脚本'                                                                                                                                                                                   

#cp /data/mysql/my.cnf /etc/my.cnf

cp /data/mysql/support-files/mysql.server /etc/init.d/mysql

sed -i 's#^basedir=#basedir=/data/mysql#g' /etc/init.d/mysql

sed -i 's#^datadir=#datadir=/data/mysql/data#g' /etc/init.d/mysql

sed -i 's#^mysqld_pid_file_path=#mysqld_pid_file_path=/data/my3309/run/mysqld.pid#g' /etc/init.d/mysql

chkconfig --add mysql

/etc/init.d/mysql start

/etc/init.d/mysql stop

service mysql start

 

echo '10.删除默认匿名账户'

#mysql -h127.0.0.1 -uroot -P3309 -e "flush privileges;"

mysql  -uroot -P3309 <<EOF

flush privileges;

update mysql.user set authentication_string='password(123456)' where user='root';

delete from mysql.user where user='';

set old_passwords=0;

create user 'replusr'@'%' identified by '123456';

create user 'root'@'%' identified by '123456';

grant replication slave on *.* to 'replusr'@'%';

grant super on *.* to 'replusr'@'%';

grant all privileges on *.* to 'root'@'%' identified by '&password' with grant option;

update mysql.user set authentication_string='password(123456)' where user='root';

flush privileges;

EOF

service mysql restart

exit