CentOS7.3 MariaDB5.5のインストール

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CentOS7.3の標準リポジトリーからインストールができるMariaDBをインストールします。

標準リポジトリーからインストールできるMariaDBのバージョンは5.5系となっていて、MySQL5.5をベースにして一部改良したものとの位置づけのようです。

MariaDBインストール

基本的には、MySQLと同様の形ですので、特に、問題なく進められると思います。

# yum info mariadb-server <LF>
    :
Available Packages
Name        : mariadb-server
Arch        : x86_64
Epoch       : 1
Version     : 5.5.52
Release     : 1.el7
Size        : 11 M
Repo        : base/7/x86_64
Summary     : The MariaDB server and related files
URL         : http://mariadb.org
License     : GPLv2 with exceptions and LGPLv2 and BSD
Description : MariaDB is a multi-user, multi-threaded SQL database server. It is a
            : client/server implementation consisting of a server daemon (mysqld)
            : and many different client programs and libraries. This package contains
            : the MariaDB server and some accompanying files and directories.
            : MariaDB is a community developed branch of MySQL.
# yum -y install mariadb-server <LF>
    :
Installed:
  mariadb-server.x86_64 1:5.5.52-1.el7
 
Dependency Installed:
  mariadb.x86_64 1:5.5.52-1.el7
  perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7
  perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7
  perl-DBD-MySQL.x86_64 0:4.023-5.el7
  perl-DBI.x86_64 0:1.627-4.el7
  perl-Data-Dumper.x86_64 0:2.145-3.el7
  perl-IO-Compress.noarch 0:2.061-2.el7
  perl-Net-Daemon.noarch 0:0.48-5.el7
  perl-PlRPC.noarch 0:0.2020-14.el7
 
Complete!

オプションファイルの設定(my.cnf)

とりあえず、文字コードをUTF8にしておきます。

# cd /etc <LF>
# cp -p my.cnf my.cnf.original.20170411 <LF>
# cat my.cnf.original.20170411 | sed '/^#/d' | sed '/^$/d' > /etc/my.cnf <LF>
# sed -i '/^\[mysqld\]$/a character-set-server=utf8' /etc/my.cnf <LF>
# cat /etc/my.cnf <LF>
[mysqld]
character-set-server=utf8
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
!includedir /etc/my.cnf.d

MariaDBの起動と設定

MariaDBの起動と設定を行ないます。

# systemctl status mariadb <LF>
* mariadb.service - MariaDB database server
   Loaded: loaded (/usr/lib/systemd/system/mariadb.service; disabled; vendor preset: disabled)
   Active: inactive (dead)
# systemctl start mariadb <LF>
# systemctl enable mariadb <LF>
# systemctl status mariadb <LF>
* mariadb.service - MariaDB database server
   Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor preset: disabled)
   Active: active (running) since Tue 2017-04-11 20:51:23 JST; 27s ago
    :
... mysqld_safe[2394]: 170411 20:51:20 mysqld_safe Logging to '/var/log/mariadb/mariadb.log'.
... mysqld_safe[2394]: 170411 20:51:20 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
... systemd[1]: Started MariaDB database server.

初期設定

MySQLと同様です。

# mysql_secure_installation <LF>
 
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):<LF> <= 空エンターを押下
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:rootpass
Re-enter new password:rootpass
Password updated successfully!
Reloading privilege tables..
 ... Success!
 
 
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!

確認

ログインして確認します。

# mysql -u root -p <LF>
Enter password:rootpass
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 10
Server version: 5.5.52-MariaDB MariaDB Server
 
Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others.
 
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
 
MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
+--------------------+
3 rows in set (0.00 sec)
 
MariaDB [(none)]> select user,host from mysql.user;
+------+-----------+
| user | host      |
+------+-----------+
| root | 127.0.0.1 |
| root | ::1       |
| root | localhost |
+------+-----------+
3 rows in set (0.00 sec)
 
MariaDB [(none)]> exit
Bye