hi3103の備忘録

MySQL入れちゃったけどやっぱりMariaDBにする。

参考URL

• ネコでもわかる！さくらのVPS講座 ～第四回「phpとMariaDBをインストールしよう」

MariaDBをインストールする

# yum install mariadb

<!--more-->
 Package                    Arch                 Version                         Repository          Size
<!--more-->
Installing:
 mariadb                    x86_64               1:5.5.56-2.el7                  base               8.7 M
Installing for dependencies:
 mariadb-libs               x86_64               1:5.5.56-2.el7                  base               757 k

# yum install mariadb-server

<!--more-->
 Package                             Arch               Version                    Repository        Size
<!--more-->
Installing:
 mariadb-server                      x86_64             1:5.5.56-2.el7             base              11 M
Installing for dependencies:
 perl-Compress-Raw-Bzip2             x86_64             2.061-3.el7                base              32 k
 perl-Compress-Raw-Zlib              x86_64             1:2.061-4.el7              base              57 k
 perl-DBD-MySQL                      x86_64             4.023-5.el7                base             140 k
 perl-DBI                            x86_64             1.627-4.el7                base             802 k
 perl-IO-Compress                    noarch             2.061-2.el7                base             260 k
 perl-Net-Daemon                     noarch             0.48-5.el7                 base              51 k
 perl-PlRPC                          noarch             0.2020-14.el7              base              36 k

関連パッケージ

# yum list available | grep mariadb       
mariadb-bench.x86_64                    1:5.5.56-2.el7                 base     
mariadb-devel.i686                      1:5.5.56-2.el7                 base     
mariadb-devel.x86_64                    1:5.5.56-2.el7                 base     
mariadb-embedded.i686                   1:5.5.56-2.el7                 base     
mariadb-embedded.x86_64                 1:5.5.56-2.el7                 base     
mariadb-embedded-devel.i686             1:5.5.56-2.el7                 base     
mariadb-embedded-devel.x86_64           1:5.5.56-2.el7                 base     
mariadb-libs.i686                       1:5.5.56-2.el7                 base     
mariadb-test.x86_64                     1:5.5.56-2.el7                 base  

MariaDBを起動する

• Apacheと同じコマンド。

# systemctl start mariadb

サーバー起動時にMariaDBも起動するようにする

• Apacheでやったのと同じコマンド。

# systemctl enable mariadb

• リストで確認
  • enabledになっていればOK

# systemctl list-unit-files -t service | grep mariadb
mariadb.service                               enabled

MariaDBの初期設定

# mysql_secure_installation

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

In order to log into MariaDB to secure it, we'll need the current
password for the root user.  If you've just installed MariaDB, 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): 

• 何も入力せずReturn

OK, successfully used password, moving on...

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

Set root password? [Y/n] y
New password: 
Re-enter new password: 
Password updated successfully!
Reloading privilege tables..
 ... Success!

• rootのパスワード設定完了

By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB 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, MariaDB 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 MariaDB
installation should now be secure.

Thanks for using MariaDB!

データベースにrootでログインする

# mysql -u root -p
Enter password:

Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 10
Server version: 5.5.56-MariaDB MariaDB Server

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

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

MariaDB [(none)]>

データベースをみてみる

MariaDB [(none)]> show databases;
1. --------------------+
| Database           |
1. --------------------+
| information_schema |
| mysql              |
| performance_schema |
1. --------------------+
3 rows in set (0.00 sec)

MariaDBのバージョンを確認する

# mysql --version
mysql  Ver 15.1 Distrib 5.5.56-MariaDB, for Linux (x86_64) using readline 5.1

• データベースに入ってから下記実行しても確認できる。

  MariaDB [(none)]> select version();
  1. ----------------+
  | version()      |
  1. ----------------+
  | 5.5.56-MariaDB |
  1. ----------------+
  1 row in set (0.00 sec)