Programming My Life

Sunday, April 17, 2011

Installing MySQL Database 5.5.10

Install MySQL Database 5.5.10 on Fedora 13/14, CentOS 5.5, Red Hat (RHEL) 5.5/6

1. Change root user

su -
## OR ##
sudo -i

2. Install Remi repository

Fedora

## Remi Dependency on Fedora 14, 13, 12, 11, 10, 9, 8
rpm -Uvh http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm 
rpm -Uvh http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm
 
## Fedora 14 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-14.rpm
 
## Fedora 13 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-13.rpm
 
## Fedora 12 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-12.rpm
 
## Fedora 11 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-11.rpm
 
## Fedora 10 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-10.rpm
 
## Fedora 9 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-9.rpm
 
## Fedora 8 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-8.rpm

CentOS and Red Hat (RHEL)

## Remi Dependency on CentOS and Red Hat (RHEL)
rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm
 
Red Hat (RHEL) 6
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
 
## CentOS 5.5 and Red Hat (RHEL) 5.5 
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-5.rpm

3. Check Available MySQL versions

Fedora 14

yum list mysql

Fedora 14, (13, 12, 11, 10, 9, 8)

yum --enablerepo=remi list mysql mysql-server

CentOS 5.5 and Red Hat (RHEL) 5.5/6

yum --enablerepo=remi,remi-test list mysql mysql-server

Output:

Loaded plugins: changelog, fastestmirror, presto, refresh-packagekit
...
remi                                                            | 3.0 kB     00:00     
remi/primary_db                                                 | 106 kB     00:00     
Available Packages
mysql.i686                               5.5.10-1.fc14.remi                        @remi
mysql-server.i686                        5.5.10-1.fc14.remi                        @remi

4. Update or Install MySQL 5.5.10

Fedora 14 (13, 12, 11, 10, 9, 8, 7)

yum --enablerepo=remi install mysql mysql-server

CentOS 5.5 and Red Hat (RHEL) 5.5

yum --enablerepo=remi,remi-test install mysql mysql-server

5. Start MySQL server and autostart MySQL on boot

/etc/init.d/mysqld start ## use restart after update
## OR ##
service mysqld start ## use restart after update
 
chkconfig --levels 235 mysqld on

6. MySQL Secure Installation

Set (Change) root password
Remove anonymous users
Disallow root login remotely
Remove test database and access to it
Reload privilege tables

Start MySQL Secure Installation with following command

/usr/bin/mysql_secure_installation

Output:

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): 
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
New password: 
Re-enter new password: 
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
 ... 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
 ... 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
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!
 
Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.
 
Reload privilege tables now? [Y/n] Y
 ... Success!
 
Cleaning up...
 
 
 
All done!  If you\'ve completed all of the above steps, your MySQL
installation should now be secure.
 
Thanks for using MySQL!

Note: If you don’t want some reason, do a “MySQL Secure Installation” then at least it’s very important to change the root user’s password

mysqladmin -u root password [your_password_here]
 
## Example ##
mysqladmin -u root password myownsecrectpass

7. Connect to MySQL database (localhost) with password

mysql -u root -p
 
## OR ##
mysql -h localhost -u root -p

8. Create Database, Create MySQL User and Enable Remote Connections to MySQL Database

This example uses following parameters:

DB_NAME = webdb
USER_NAME = webdb_user
REMOTE_IP = 10.0.15.25
PASSWORD = password123
PERMISSIONS = ALL

## CREATE DATABASE ##
mysql> CREATE DATABASE webdb;
 
## CREATE USER ##
mysql> CREATE USER 'webdb_user'@'10.0.15.25' IDENTIFIED BY 'password123';
 
## GRANT PERMISSIONS ##
mysql> GRANT ALL ON webdb.* TO webdb_user@'10.0.15.25';
 
##  FLUSH PRIVILEGES, Tell the server TO reload the GRANT TABLES  ##
mysql> FLUSH PRIVILEGES;

Enable Remote Connection to MySQL Server –> Open MySQL Port (3306) on Iptables Firewall (as root user again)

1. Edit /etc/sysconfig/iptables file:

nano -w /etc/sysconfig/iptables

2. Add following line before COMMIT:

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT

3. Restart Iptables Firewall:

service iptables restart
## OR ##
/etc/init.d/iptables restart

4. Test remote connection:

mysql -h dbserver_name_or_ip_address -u webdb_user -p webdb

Installing Apache HTTP Server and PHP 5

Install Apache HTTP Server (httpd) and PHP 5.3.6

1. Change root user

su -
## OR ##
sudo -i

2. Install Remi repository

Fedora

## Remi Dependency on Fedora
rpm -Uvh http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm 
rpm -Uvh http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm
 
## Fedora 14 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-14.rpm
 
## Fedora 13 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-13.rpm
 
## Fedora 12 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-12.rpm
 
## Fedora 11 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-11.rpm
 
## Fedora 10 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-10.rpm
 
## Fedora 9 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-9.rpm
 
## Fedora 8 ##
rpm -Uvh http://rpms.famillecollet.com/remi-release-8.rpm

CentOS and Red Hat (RHEL)

## Remi Dependency on CentOS and Red Hat (RHEL)
rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm
 
## Red Hat (RHEL) 6 ##
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
 
## CentOS 5 and Red Hat (RHEL) 5 ##
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-5.rpm

3. Install Apache (httpd) Web server and PHP 5.3.6

Fedora 14

yum install httpd php php-common

Fedora 13 (12, 11, 10, 9, 8, 7), CentOS 5.5 and Red Hat (RHEL) 5.5

yum --enablerepo=remi install httpd php php-common

4. Install PHP 5.3.6 modules

Select what you need: PEAR, PDO, MySQL, PostgreSQL, Memcache, GD, MBString, MCrypt, XML

Fedora 14

yum install php-pear php-pdo php-mysql php-pgsql php-pecl-memcache php-gd php-mbstring php-mcrypt php-xml

Fedora 13 (12, 11, 10, 9, 8), CentOS 5.5 and Red Hat (RHEL) 5.5

yum --enablerepo=remi install php-pear php-pdo php-mysql php-pgsql php-pecl-memcache php-gd php-mbstring php-mcrypt php-xml

5. Start Apache HTTP server (httpd) and autostart Apache HTTP server (httpd) on boot

/etc/init.d/httpd start ## use restart after update
## OR ##
service httpd start ## use restart after update
 
chkconfig --levels 235 httpd on

6. Create test PHP page to check that Apache, PHP and PHP modules are working

Add following content to /var/www/html/test.php file.

<?php
 
    phpinfo();
 
?>

7. Check created page with browser

Access following address, with your browser. http://localhost/test.php

Enable Remote Connection to Apache HTTP Server (httpd) –> Open Web server Port (80) on Iptables Firewall (as root user again)

1. Edit /etc/sysconfig/iptables file:

nano -w /etc/sysconfig/iptables

2. Add following line before COMMIT:

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT

3. Restart Iptables Firewall:

service iptables restart
## OR ##
/etc/init.d/iptables restart

4. Test remote connection

Access following address, with your browser. http://your.domain/test.php

Saturday, April 16, 2011

Custom CheckStyle Checker Configuration

Using a Custom Checkstyle Checker Configuration

A custom Checker configuration xml file can be defined and then referenced via a URL, File, or build classpath resource reference.

To reference a custom Checkstyle Checker configuration, use the configLocation parameter.


  ...
  
    
      
        org.apache.maven.plugins
        maven-checkstyle-plugin
        2.6
        
          checkstyle.xml
        
      
    
  
  ...

This example causes the Checkstyle Plugin to check for a File named checkstyle.xml or a resource named checkstyle.xml within the compile scope of the dependencies or build extensions classpath.

There are 4 predefined Checkstyle configuration definitions that ship with the Checkstyle Plugin, the Sun Microsystems Definition is selected by default.

config/sun_checks.xml - Sun Microsystems Definition (default).
config/maven_checks.xml - Maven Development Definitions.
config/turbine_checks.xml - Turbine Development Definitions.
config/avalon_checks.xml - Avalon Development Definitions.