yum -y install mysql-community-server


vi /etc/my.cnf


[client]
default-character-set = utf8

[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

character-set-client-handshake=FALSE
init_connect="SET collation_connection = utf8_general_ci"
init_connect="SET NAMES utf8"
character-set-server = utf8
collation-server = utf8_general_ci

[mysqldump]
default-character-set = utf8

[mysql]
default-character-set = utf8

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid



systemctl enable mysqld
systemctl start mysqld

/usr/bin/mysql_secure_installation


firewall-cmd --permanent --zone=public --add-port=3306/tcp
firewall-cmd --reload


mysql -u root -p mysql


create database dbname default character set utf8;

create user 'id'@'%' identified by 'passward';
-외부접속용

create user '아이디'@'localhost' identified by '비밀번호';
-로컬접속용


grant all privileges on *.* to '아이디'@'%'; 

 grant all privileges on DB이름.* to '아이디'@'%';

select user, host from user;