MySQL 설치와 초기 설정

MySQL 설치와 초기 설정

먼저 MySQL을 설치 할 수 있는 검색해본다.

yum --enablerepo=remi,remi-test list mysql mysql-server

[root@db2 ~]# yum --enablerepo=remi,remi-test list mysql mysql-server
Loaded plugins: fastestmirror, presto
Loading mirror speeds from cached hostfile
Excluding mirror: mirror.khlug.org
Excluding mirror: data.nicehosting.co.kr
 * base: www.ftp.ne.jp
Excluding mirror: mirror.khlug.org
Excluding mirror: data.nicehosting.co.kr
 * extras: www.ftp.ne.jp
 * remi: iut-info.univ-reims.fr
 * remi-test: iut-info.univ-reims.fr
Excluding mirror: mirror.khlug.org
Excluding mirror: data.nicehosting.co.kr
 * updates: www.ftp.ne.jp
base                                                     | 3.7 kB     00:00
extras                                                   | 3.5 kB     00:00
remi                                                     | 2.9 kB     00:00
remi/primary_db                                          | 220 kB     00:02
remi-test                                                | 2.9 kB     00:00
remi-test/primary_db                                     |  60 kB     00:01
updates                                                  | 3.5 kB     00:00
Available Packages
mysql.x86_64                           5.5.19-1.el6.remi                    remi
mysql-server.x86_64                    5.5.19-1.el6.remi                    remi

remi Repo를 통해서 5.5.19 최신 버전을 사용할 수 있다. 이제 설치해보도록 한다.

yum --enablerepo=remi,remi-test install mysql mysql-server

[root@db2 ~]# yum --enablerepo=remi,remi-test install mysql mysql-server
Loaded plugins: fastestmirror, presto
Loading mirror speeds from cached hostfile
Excluding mirror: mirror.khlug.org
Excluding mirror: data.nicehosting.co.kr
 * base: www.ftp.ne.jp
Excluding mirror: mirror.khlug.org
Excluding mirror: data.nicehosting.co.kr
 * extras: www.ftp.ne.jp
 * remi: iut-info.univ-reims.fr
 * remi-test: iut-info.univ-reims.fr
Excluding mirror: mirror.khlug.org
Excluding mirror: data.nicehosting.co.kr
 * updates: www.ftp.ne.jp
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package mysql.x86_64 0:5.5.19-1.el6.remi will be installed

... 중략 ...

warning: rpmts_HdrFromFdno: Header V3 DSA/SHA1 Signature, key ID 00f97f56: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi
Importing GPG key 0x00F97F56:
 Userid : Remi Collet <RPMS@FamilleCollet.com>
 Package: remi-release-6-1.el6.remi.noarch (installed)
 From   : /etc/pki/rpm-gpg/RPM-GPG-KEY-remi
Is this ok [y/N]: y
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
** Found 1 pre-existing rpmdb problem(s), 'yum check' output follows:
kernel-2.6.32-220.el6.x86_64 has missing requires of kernel-firmware >= ('0', '2.6.32', '220.el6')
  Installing : mysql-libs-5.5.19-1.el6.remi.x86_64                         1/12

WARNING : This MySQL RPM is not an official Fedora/Redhat build and it
overrides the official one. Don't file bugs on Fedora Project nor Redhat.
Use dedicated forums http://forums.famillecollet.com/

  Installing : 1:perl-Pod-Escapes-1.04-119.el6_1.1.x86_64                  2/12
  Installing : 1:perl-Module-Pluggable-3.90-119.el6_1.1.x86_64             3/12
  Installing : 1:perl-Pod-Simple-3.13-119.el6_1.1.x86_64                   4/12
  Installing : 4:perl-libs-5.10.1-119.el6_1.1.x86_64                       5/12
  Installing : 3:perl-version-0.77-119.el6_1.1.x86_64                      6/12
  Installing : 4:perl-5.10.1-119.el6_1.1.x86_64                            7/12
  Installing : perl-DBI-1.609-4.el6.x86_64                                 8/12
  Installing : mysql-5.5.19-1.el6.remi.x86_64                              9/12
  Installing : compat-mysql51-5.1.54-1.el6.remi.x86_64                    10/12
  Installing : perl-DBD-MySQL-4.013-3.el6.x86_64                          11/12
  Installing : mysql-server-5.5.19-1.el6.remi.x86_64                      12/12

Installed:
  mysql.x86_64 0:5.5.19-1.el6.remi    mysql-server.x86_64 0:5.5.19-1.el6.remi

Dependency Installed:
  compat-mysql51.x86_64 0:5.1.54-1.el6.remi
  mysql-libs.x86_64 0:5.5.19-1.el6.remi
  perl.x86_64 4:5.10.1-119.el6_1.1
  perl-DBD-MySQL.x86_64 0:4.013-3.el6
  perl-DBI.x86_64 0:1.609-4.el6
  perl-Module-Pluggable.x86_64 1:3.90-119.el6_1.1
  perl-Pod-Escapes.x86_64 1:1.04-119.el6_1.1
  perl-Pod-Simple.x86_64 1:3.13-119.el6_1.1
  perl-libs.x86_64 4:5.10.1-119.el6_1.1
  perl-version.x86_64 3:0.77-119.el6_1.1

Complete!

설치가 되었지만 몇가지 설정해주어야 할 것이 있다.

• MySQL 서버의 관리자(root) 암호 설정
• anonymous 계정 삭제
• 불필요한 test 데이타베이스 삭제

[root@db2 ~]# /etc/init.d/mysqld start
Initializing MySQL database:  Installing MySQL system tables...
OK
Filling help tables...
OK

To start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your system

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:

/usr/bin/mysqladmin -u root password 'new-password'
/usr/bin/mysqladmin -u root -h db2.i-pharm.org password 'new-password'

Alternatively you can run:
/usr/bin/mysql_secure_installation

which will also give you the option of removing the test
databases and anonymous user created by default.  This is
strongly recommended for production servers.

See the manual for more instructions.

You can start the MySQL daemon with:
cd /usr ; /usr/bin/mysqld_safe &

You can test the MySQL daemon with mysql-test-run.pl
cd /usr/mysql-test ; perl mysql-test-run.pl

Please report any problems with the /usr/bin/mysqlbug script!

                                                           [  OK  ]
Starting mysqld:                                           [  OK  ]

[root@db2 ~]#

mysql을 실행하면 별다른 인증과정 없이 접속할 수 있다.

mysql 데이타베이스의 root 계정은 리눅스 운영체제의 root 계정과는 별도의 비밀번호이다.

[root@db2 ~]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.19 MySQL Community Server (GPL) by Remi

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> Bye

암호 입력없이 그냥 접속이 되는 것인 상당히 위험하므로, 반드시 암호를 설정한다.

작은따옴표도 입력해야 한다.

[root@db2 ~]# /usr/bin/mysqladmin -u root password '암호'


[root@db2 ~]# mysql
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)


[root@db2 ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.5.19 MySQL Community Server (GPL) by Remi

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> Bye

mysql_secure_installation 명령을 이용하면 더 간단히 설정할 수 도 있다.

[root@db2 ~]# /usr/bin/mysql_secure_installation




NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!


In order to log into MySQL to secure it, we'll need the current
password for the root user.  If you've just installed MySQL, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.

You already have a root password set, so you can safely answer 'n'.

Change the root password? [Y/n] n
 ... skipping.

By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.

Remove anonymous users? [Y/n] y
 ... Success!

Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] y
 ... Success!

By default, MySQL comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.

Remove test database and access to it? [Y/n] y
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] y
 ... Success!

Cleaning up...



All done!  If you've completed all of the above steps, your MySQL
installation should now be secure.

Thanks for using MySQL!

Database 생성 및 사용자 생성

새로운 사용자 생성

CREATE USER wordpress@localhost IDENTIFIED BY "some_good_password_for_wordpress";

새로운 데이타베이스 생성

CREATE DATABASE wordpress_blog;

필요한 권한 설정

GRANT ALL ON wordpress_blog.* TO wordpress@localhost;

권한 설정 적용

FLUSH PRIVILEGES;

출처 : http://sekwonlee.blogspot.kr/2014/12/centos-66-64bit-lamplinux-apache-mysql.html

깔끔하게 잘 정리된 듯하다.