<1>安装mysql-server

sudo apt-get update

sudo apt-get install mysql-server mysql-client

<2>如何判断mysql是否安装成功

sudo service mysql restart

<3>让apache支持mysql

sudo apt-get install libapache2-mod-auth-mysql

16.04使用下面命令

sudo apt-get install libmysqlclient-dev

<3>登录mysql

mysql -u root -p

<4>配置文件my.cnf修改成功后就可以重启数据库（修改方法在下面），重启数据库之前需要先重新载入apparmor配置文件，使用下面命令重新载入：

sudo /etc/init.d/apparmor restart

　　重新启动数据库

sudo /etc/init.d/mysql start

<5>查看数据库的编码

一、查看MySQL数据库服务器和数据库MySQL字符集。

SHOW VARIABLES LIKE 'character_set_%';

如果需要修改的话

set character_set_client=utf8;

二、查看MySQL数据表（table）的MySQL字符集，spring_user是数据库的名字，t_user是表名

mysql> show table status from spring_user like '%t_user%';

或者

mysql> show create table t_user;

修改方法：

alter table t_user convert to character set utf8;

三、查看MySQL数据列（column）的MySQL字符集，t_user是表名

mysql> show full columns from t_user;

<6>sudo gedit /etc/my.cnf

因为ubuntu下mySQL默认的数据库的路径是在/var/lib/mysql，所以要修改这个路径的话，参考

http://www.2cto.com/database/201501/373939.html

注意修改的时候/mysql要加上

修改的my.cnf文件，修改完切记一定要重启电脑才能生效！！重启电脑！！重启电脑！！

#

# The MySQL database server configuration file.

#

# You can copy this to one of:

# - "/etc/mysql/my.cnf" to set global options,

# - "~/.my.cnf" to set user-specific options.

#

# One can use all long options that the program supports.

# Run program with --help to get a list of available options and with

# --print-defaults to see which it would actually understand and use.

#

# For explanations see

# http://dev.mysql.com/doc/mysql/en/server-system-variables.html

# This will be passed to all mysql clients

# It has been reported that passwords should be enclosed with ticks/quotes

# escpecially if they contain "#" chars...

# Remember to edit /etc/mysql/debian.cnf when changing the socket location.

[client]

port		= 3306

socket		= /var/run/mysqld/mysqld.sock

default-character-set=utf8

# Here is entries for some specific programs

# The following values assume you have at least 32M ram

# This was formally known as [safe_mysqld]. Both versions are currently parsed.

[mysqld_safe]

default-character-set=utf8

character_set_server = utf8

socket		= /var/run/mysqld/mysqld.sock

nice		= 0

[mysqld]

#

# * Basic Settings

#

user		= mysql

pid-file	= /var/run/mysqld/mysqld.pid

socket		= /var/run/mysqld/mysqld.sock

character_set_server=utf8

init_connect='SET NAMES utf8'

port		= 3306

basedir		= /usr

datadir		= /home/common/software/database/mysql

tmpdir		= /tmp

lc-messages-dir	= /usr/share/mysql

skip-external-locking

#

# 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

#

# * Fine Tuning

#

key_buffer		= 16M

max_allowed_packet	= 16M

thread_stack		= 192K

thread_cache_size       = 8

# This replaces the startup script and checks MyISAM tables if needed

# the first time they are touched

myisam-recover         = BACKUP

#max_connections        = 100

#table_cache            = 64

#thread_concurrency     = 10

#

# * Query Cache Configuration

#

query_cache_limit	= 1M

query_cache_size        = 16M

#

# * Logging and Replication

#

# Both location gets rotated by the cronjob.

# Be aware that this log type is a performance killer.

# As of 5.1 you can enable the log at runtime!

#general_log_file        = /var/log/mysql/mysql.log

#general_log             = 1

#

# Error log - should be very few entries.

#

log_error = /var/log/mysql/error.log

#

# Here you can see queries with especially long duration

#log_slow_queries	= /var/log/mysql/mysql-slow.log

#long_query_time = 2

#log-queries-not-using-indexes

#

# The following can be used as easy to replay backup logs or for replication.

# note: if you are setting up a replication slave, see README.Debian about

#       other settings you may need to change.

#server-id		= 1

#log_bin			= /var/log/mysql/mysql-bin.log

expire_logs_days	= 10

max_binlog_size         = 100M

#binlog_do_db		= include_database_name

#binlog_ignore_db	= include_database_name

#

# * InnoDB

#

# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.

# Read the manual for more InnoDB related options. There are many!

#

# * Security Features

#

# Read the manual, too, if you want chroot!

# chroot = /var/lib/mysql/

#

# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".

#

# ssl-ca=/etc/mysql/cacert.pem

# ssl-cert=/etc/mysql/server-cert.pem

# ssl-key=/etc/mysql/server-key.pem

[mysqldump]

quick

quote-names

max_allowed_packet	= 16M

[mysql]

default-character-set=utf8

#no-auto-rehash	# faster start of mysql but no tab completition

[isamchk]

key_buffer		= 16M

#

# * 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/

Ubuntu下Eclipse部署MySQL JDBC驱动

参考http://www.linuxidc.com/Linux/2011-10/44355.htm中的上半部分

Linux下自动启动MySQL

一、查看MySQL数据库服务器和数据库MySQL字符集。

命令：

mysql> show variables like '%char%';

二、查看MySQL数据表（table）的MySQL字符集。

命令：

mysql> show table status from sqlstudy_db like '%countries%';

三、查看MySQL数据列（column）的MySQL字符集。

命令：

mysql> show full columns from countries;

四、修改MySQL的密码

首先用root登录MySQL，然后执行

UPDATE user SET password=PASSWORD('123456') WHERE user='root';

FLUSH PRIVILEGES;

或者

SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');

如果要安装5.6版本的mysql

sudo add-apt-repository 'deb http://archive.ubuntu.com/ubuntu trusty universe'

sudo apt-get update

sudo apt install mysql-server-5.6 mysql-client-5.6

如果卸载5.7再安装的时候遇到

/var/cache/apt/archives/mysql-server-5.6_5.6.16-1~exp1_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1)

sudo apt-get remove --purge mysql-server mysql-client mysql-common

sudo apt-get autoremove

sudo apt-get autoclean

先确保 mysql service是启动的,没启动会报找不到mysqld.sock

service mysql status

service mysql start

巴特西

Ubuntu下的MySQL安装

Ubuntu下Eclipse部署MySQL JDBC驱动

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