CentOS 7にMySQL5.6.22をインストールする。

仕事でCMSを使う機会があって、MySQLを導入する必要がありました。

ということで、MySQL導入します。

MariaDBの何かしらがインストールされていないか確認

yum list installed | grep maria

入っていました。

mariadb-libs.x86_64              1:5.5.35-3.el7                        @anaconda

MySQLを入れるのでアンインストール

yum -y remove mariadb-libs

MySQLのインストール

#コミュニティのリポジトリを追加
yum -y install http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm

#それぞれ追加していきましょう。
yum -y install mysql
yum -y install mysql-devel
yum -y install mysql-server
yum -y install mysql-utilities

mysqlデーモンの起動コマンド

service mysqld start

DB初期設定はこのコマンド

/usr/bin/mysql_secure_installation

そうするとこんなん出てきます。

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):    ←確か空エンター
OK, successfully used password, moving on...

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

Set root password? [Y/n] Y    ←rootのパスワードを設定するか?yes!
New password:
Re-enter new password:      ←パスワードを入力
Password updated successfully!
Reloading privilege tables..
 ... Success!


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       ←アノニマスユーザー削除する?yes!
 ... 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   ←rootのリモート接続はできないようにする?yes!
 ... 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  ←テストDB削除する?yes!
 - Dropping test database...
ERROR 1008 (HY000) at line 1: Can't drop database 'test'; database doesn't exist
 ... Failed!  Not critical, keep moving...
 - Removing privileges on test database...
 ... Success!
#なんかエラー出てるけど、まあいいか!

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

Reload privilege tables now? [Y/n] Y     ←権限設定をリロードしとく?yes!
 ... Success!




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

Thanks for using MySQL!


Cleaning up...

接続してみましょう。

# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 11
Server version: 5.1.69 Source distribution

Copyright (c) 2000, 2013, 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
mysql show databases;

無事に接続されました。