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MySQL

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MySQL

Course objectives

Install Mysql. Server installation and configuration

Use Mysql

Replicate Mysql

By completing this course, you will:

MySQL

Course topics

Introduction. MySQL History and concepts

Configuration. client-server installation and configuration

MySQL Usage.

Course’s plan:

MySQL

Introduction

What’s MySQL ?

MySQL

Preview

History

What’s MySQL

Comparison

Introduction

History

First version : May,23 1995

Created by Michaël Widenius in Sweden

Under GPL License with the version 3

In June 2000

Redeem by Sun Microsystems

FOSS (Free and Open Source Software)

Commercial License

Current version 5.1

Introduction

What’s MySQLMySQL is a RDBMS

MySQL is a relational SQL database server OpenSource SoftwareMulti OS :

•Linux

•Mac OS X

•WindowsThe most used DBMS all over the worldLightweight resources neededCluster supported with the Version 4.1

Introduction

Comparaison

The different versions of MySQL

Features MySQL 3.x

No

No

No

No

No

MySQL 4.0

Partial

No

No

No

No

MySQL 5.x

Yes

Yes

Yes

Yes

Yes

Subquery

View

Foreign Keys

Triggers

Constraints

Introduction

Stop and thinkIntroduction

Do you have any questions?

Configuration

Configuration of MySQLv5

MySQL

Preview

Installation

Configuration

Configuration

Installation

Installation with binary

Recommended

Download it :

http://dev.mysql.com/downloads/

Installation with packages tools

Needs to update the sources list

Configuration

Installation

Launch the server

Use the automatic rc script

Manual Launch :

mysqld_safe usage comparative to mysqld:

In case of problems reboot the server

logging

Give parameters to mysqld

Configuration

# /etc/init.d/mysqld start# /etc/init.d/mysqld start

# /usr/bin/mysqld_safe start# /usr/bin/mysqld_safe start

Configuration

Only one configuration file

my.cnf

For the server like for the client

Based on a section structure

Example of a configuration file :

Configuration

Stop and thinkConfiguration

Do you have any questions?

Basic usage

Basic usage of MySQL 5

MySQL

Preview

Define an admin password

Manage users

Create/Delete a database

Administration tools

Basic usage

Define a root password

By default the root password is empty

Adding a password for the root account :

or with mysqladmin command:

An user exists once he has rights on a table

# mysql -u root

mysql> GRANT ALL PRIVILEGES ON *.* TO

'root'@'localhost' IDENTIFIED BY

'password' WITH GRANT OPTION;

mysql> FLUSH PRIVILEGES;

# mysql -u root

mysql> GRANT ALL PRIVILEGES ON *.* TO

'root'@'localhost' IDENTIFIED BY

'password' WITH GRANT OPTION;

mysql> FLUSH PRIVILEGES;

Basic usage

# mysqladmin -u root password <root_password># mysqladmin -u root password <root_password>

Listing existing usersBasic usage

A simple SQL statement :

mysql> SELECT user,password,host FROM mysql.user;

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

| user | password | host |

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

| root | *A4E990E4… | localhost |

| root | | Arbalest |

| supinfo | *06CDF16C… | linux.supinfo.com |

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

3 rows in set (0.01 sec)

mysql> SELECT user,password,host FROM mysql.user;

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

| user | password | host |

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

| root | *A4E990E4… | localhost |

| root | | Arbalest |

| supinfo | *06CDF16C… | linux.supinfo.com |

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

3 rows in set (0.01 sec)

Create a database

With mysqladmin

Within MySQL client (SQL statement)

# mysqladmin -p create mandriva # mysqladmin -p create mandriva

mysql> CREATE DATABASE mandriva;mysql> CREATE DATABASE mandriva;

Basic usage

Delete a database

With mysqladmin

Within MySQL client (SQL statement)

Basic usage

# mysqladmin -p drop mandriva# mysqladmin -p drop mandriva

mysql> DROP DATABASE mandriva;mysql> DROP DATABASE mandriva;

Note

Every

command in

basic usage is

a SQL

statement

Basic usage

Administration tools

Many MySQL tools are available:

Installed with the server

mysql_install_db, mysql_find_rows, mysql_manager

Non-free Clients

MySQL explorer, MySQL tracer

Web Clients

PHPMyAdmin

Basic usage

Stop and thinkBasic usage

Do you have any questions?

Replication

Setting up replication with MySQL

MySQL

Preview

What’s a replication?

Setting up the master

Setting up the slave(s)

Replication

Overview

Setting up a replication

Characteristics:

Unidirectional: Master -> Slave(s)

Binary log file usage

Element of concern:

The database

What for?

Fault tolerance

Load balancing

Replication

Replication account

Replication user creation

Rights attribution replication slave

Command used GRANT statement

Replication

mysql> GRANT replication slave,replication client,

super,reload ON *.* TO 'user'@'%'

IDENTIFIED BY 'password'

mysql> GRANT replication slave,replication client,

super,reload ON *.* TO 'user'@'%'

IDENTIFIED BY 'password'

Setting up the master

Configuration of the master and database archiving

Configuration

Adding options

• log-bin: Active the creation of binary log

• server-id: master’s unique number

Command used for manual replication

Replication

# cd /var/lib/mysql# tar -cvjf mysql-database.tar.bz2 test# cd /var/lib/mysql# tar -cvjf mysql-database.tar.bz2 test

Setting up the slave(s)

Slave configuration

Configuration

Adding options

• master-host: master server name

• master-user: replication account username

• master-password: replication account password

• master-port: server port

• server-id: slave’s unique number (mandatory)

Replication

Setting up the slave(s)

Activate the replication (after creating the same database on both servers)

Command :

Replication

Mysql > LOAD DATA FROM MASTER;Mysql > LOAD DATA FROM MASTER;

Setting up the slave(s)

Uncompressing the database

Command for uncompressing

Replication

# cd /var/lib/mysql

# tar -xvjf mysql-database.tar.bz2

# cd /var/lib/mysql

# tar -xvjf mysql-database.tar.bz2

Note

The

replication is

done, you

just have to

restart the

master and

the slave(s)

Replication

Stop and thinkReplication

Do you have any questions?

MySQL setup

Basic usageMySQL

Replication

Course summary

Installation of MySQL

MySQL

For more

CoursesPublications

Web sites

Introduction to databases

If you want to go into these subjects more deeply…

www.labo-linux.com

www.dunod.fr

MySQL

Congratulations

You have successfully completed the SUPINFO course module

MySQL

The endMySQL