mysql 相关环境配置

1. mysql

版本要求 5.5 以上, 否则不支持 emoji 表情.

$ sudo apt-get install mysql-server



$ sudo vim /etc/mysql/my.cnf  # charset utf8mb4. mysql 5.5 required

[client]

default-character-set = utf8mb4

[mysql]

default-character-set = utf8mb4

[mysqld]

character-set-client-handshake = FALSE

character-set-server = utf8mb4

collation-server = utf8mb4_unicode_ci

init_connect='SET NAMES utf8mb4'



$ sudo service mysql restart

$ mysql -uroot -p # login and check

mysql> SHOW VARIABLES WHERE Variable_name LIKE 'character\_set\_%' OR Variable_name LIKE 'collation%';

+--------------------------+--------------------+

| Variable_name            | Value              |

+--------------------------+--------------------+

| character_set_client     | utf8mb4            |

| character_set_connection | utf8mb4            |

| character_set_database   | utf8mb4            |

| character_set_filesystem | binary             |

| character_set_results    | utf8mb4            |

| character_set_server     | utf8mb4            |

| character_set_system     | utf8               |

| collation_connection     | utf8mb4_unicode_ci |

| collation_database       | utf8mb4_unicode_ci |

| collation_server         | utf8mb4_unicode_ci |

+--------------------------+--------------------+

10 rows in set (0.00 sec)



# security grant 

mysql> use mysql;

mysql> delete from user where user = '';

Query OK, 2 rows affected (0.00 sec)

 2. Apache2

安装后, 默认路径指向  /var/www 

$ sudo vim /etc/apache2/sites-enabled/000-default

# by default in ubuntu: /var/www/html

DocumentRoot /var/www

3. phpmyadmin

$ sudo apt-get install phpmyadmin

$ sudo ln -s /usr/share/phpmyadmin/ /var/www