debian8 安装 mysql5.6和简单配置

• 使用自动的方式安装mysql5.6

这个是mysql官网中的关于Download MySQL APT Repository的信息
[ http://dev.mysql.com/downloads/repo/apt/ ]
通过在本页上翻找，找到如下的连接 [ http://dev.mysql.com/doc/mysql-apt-repo-quick-guide/en/ ]
这个页面与指导用户如何去安装mysql对应得不同版本的信息

• 对于debian8 而言

wget   http://dev.mysql.com/get/mysql-apt-config_0.3.6-1debian8_all.deb
dpkg -i  mysql-apt-config_0.3.6-1debian8_all.deb
在弹出的页面选择使用apply模式，这会将一些资源的网址写入到source-list文件中去
之后进行
sudo apt-get update
对制定版本的安装
sudo apt-get install mysql-server-5.6

• 更换mysql的数据的存储的位置
  
  • 原始的my.cnf文件内容是

[client]
port            = 3306
socket          = /var/run/mysqld/mysqld.sock

[mysqld_safe]
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
nice            = 0

[mysqld]
user            = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
datadir         = /var/lib/mysql
tmpdir          = /tmp
lc-messages-dir = /usr/share/mysql
explicit_defaults_for_timestamp

# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address    = 127.0.0.1

log-error       = /var/log/mysql/error.log

# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/

• 修改之后的my.cnf文件

1.进行mysql字符集的修改
2.存储路径的修改
3.系统日志的修改
[client]
port            = 3306
socket          = /var/run/mysqld/mysqld.sock
default-character-set = utf8

[mysqld_safe]
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
nice            = 0

[mysqld]
user            = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
#datadir        = /var/lib/mysql
datadir         = /mnt/mysql

tmpdir          = /tmp
lc-messages-dir = /usr/share/mysql
explicit_defaults_for_timestamp

character-set-server = utf8

# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address    = 127.0.0.1

log-error       = /var/log/mysql/error.log

# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/

• 注意，在修改存储路径之前需要先使用mysql_install_db

1.先去修改my.cnf的配置文件
2.关闭mysql
3.启动mysqld_safe &
4.使用mysql_install_db
5.对于初始化的数据库要进行密码修正，主要是mysqladmin
6.然后重启服务
若其中出现问题，请即刻去查看一下 /var/log/mysql/error.log
sudo /usr/bin/mysqladmin -u root password 'root'
sudo /usr/bin/mysql_install_db --user=mysql --basedir=/usr/ --datadir=/mnt/mysql
然后启动mysqld_safe &
在启动mysql就可以了

• mysql重启的命令

sudo service mysql restart
sudo service mysql stop
sudo service mysql start
sudo /etc/init.d/mysql start | stop | restart