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IP address Apache access logs

If You want find out which ip address occurs the most in apache logs (to determine bot attack) run :

cat access_log | awk '{print $1}' | sort | uniq -c | sort -n | tail

To determine if given IP occurs in iptables rules:

iptables -L -n -v | grep [ip_address]

That helped me a lot lately…

OS X – Scheduled files cleanup

Do You like Your ~/Downloads folder ? Is it always clean and well organised ? Mine never was … Over time it got so messy that it was easier to download something again that look for it in ~/Downloads…

I came up with an idea of scheduled folder cleanup, but because in OS X cron is not available by default I had to figure it out the OS X way.

First I wrote a script for cleanup in ~/bin/download-cleanup :

#!/bin/bash

find /Users/[username]/Downloads -mtime +30 -print0 | xargs -0 rm -rf

This script looks for files older than 30 days and deletes them.

Now lets schedule it. Create file under ~/Library/LaunchAgents/pl.jusz.gen.DownloadCleanup.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-/Apple/DTD PLIST 1.0/EN" "http:/www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
 <dict>
 <key>Label</key>
 <string>pl.jusz.gen.DownloadCleanup</string>
 <key>ProgramArguments</key>
 <array>
 <string>/Users/[username]/bin/download-cleanup</string>
 </array>
 <key>StartInterval</key>
 <integer>43200</integer>
 </dict>
</plist>

You can now register Your plist file with launchd:

launchctl load ~/Library/LaunchAgents/pl.jusz.gen.DownloadCleanup.plist

If You want to manually invoke Your script through launchd:

launchctl start pl.jusz.gen.DownloadCleanup.plist

 

 

How to install Redmine 2.5 on CentOS 6.5

This installation assumes that You have already Apache 2.2 and MySQL 5.x up and running.

Ruby 2.1

For whole operation we’ll need to install Development Tools, which can be done by:

yum groupinstall development

Then we’ll install ruby 2.1.x via rvm

curl -L get.rvm.io | bash -s stable
source /etc/profile.d/rvm.sh

Now we’ll have to reload rvm and install ruby

rvm reload
# this will install newest tag from 2.1 branch
rvm install 2.1

Now we want to make this version as default and this is done by:

rvm use 2.1.x --default

Phusion Passenger

To run Redmine we’ll need Passenger with it’s Apache module.

gem install passenger
passenger-install-apache2-module

Installer will guide You through process. At the end You’ll need to add /etc/httpd/conf.d/passenger.conf :

LoadModule passenger_module /usr/local/rvm/gems/ruby-2.1.1/gems/passenger-4.0.41/buildout/apache2/mod_passenger.so
<IfModule mod_passenger.c>
    PassengerRoot /usr/local/rvm/gems/ruby-2.1.1/gems/passenger-4.0.41
    PassengerDefaultRuby /usr/local/rvm/gems/ruby-2.1.1/wrappers/ruby
</IfModule>

Of course versions may vary depending on when You’re doing this. Installer will however give You this details.

Redmine 2.5

Download latest version from Redmine official webpage by wget and untar it:

wget http://www.redmine.org/releases/redmine-2.5.1.tar.gz
tar xzvf redmine-2.5.1.tar.gz
mv redmine-2.5.1 /var/www/html/redmine

Now it’s time to configuration. Let’s start from database. Edit config/database.yml and pass there Your database credentials

production:
 adapter: mysql2
 database: redmine
 host: localhost
 username: redmine
 password: redmine
 encoding: utf8

Next we’ll setup mail delivery data. Edit config/configuration.yml

production:
 email_delivery:
 delivery_method: :smtp
 smtp_settings:
 address: "localhost"
 port: 25
 authentication: :login
 domain: 'your.server.com'
 user_name: 'redmine@your.server.com'
 password: 'YourSecretPassword.600'

It’s time to bundle our Redmine:

bundle install --without development test
bundle exec rake generate_secret_token
RAILS_ENV=production bundle exec rake db:migrate

Then we’ll have to change ownership of /var/www/html/redmine

chown -R apache. /var/www/html/redmine

Configure Apache

It’s time to add VirtulaHost to Your Apache instance

<VirtualHost *:80>
 ServerName your.server.com
 ServerAlias www.your.server.com
 DocumentRoot /var/www/html/redmine/public

 <Directory /var/www/html/redmine/public>
   AllowOverride all
   Options -Multiviews
 </Directory>
</VirtualHost>

Now restart Apache and You’re good to go !

service httpd graceful

Yay! Now You can login by passing admin/admin credentials. Have Fun!

screenshot-2014-04-19-10.37.43

Zend Framework 1.x and Composer

Composer is a very useful tool for dependency management in PHP. Most of new and cutting edge frameworks like Zend Framework 2, Symfony 2, Laravel 4 etc. are designed to work with it very easily. Zend Framework 1 requires a little modifications.

Install Composer

Easiest way is just:

curl -sS https://getcomposer.org/installer | php

This will download composer.phar to current directory and You’ll be set to go.
If You however want to make composer a system-wide command, it’s pretty easy too:

mv composer.phar /usr/local/bin/composer

Now instead of using php composer.phar [command] , You can do simply: composer [command]

Zend Framework 1.x project

Let’s assume that we already have working ZF1 project and we’d like to switch it to composer.

cd ~/Projects/zf1-project
php composer.phar init

# alternatively if You've made composer system-wide
composer init

Now You’ll have to fill some details about Your current project and then composer will ask You about dependencies. Choose Interactive mode and search for package zendframework1 then enter the number for the line that matches zendframework/zendframework1. Then You’ll have to pass version of the library. If You want to have latest enter 1.*.

Next after another prompt about dependencies just hit return, and for next question answer ‘no’, because we don’t want to define any dev dependencies.

This should create file composer.json which looks similar to:

{
    "name": "genjusz/zf1-project",
    "description": "Zend Framework 1.x integration with Composer",
    "require": {
        "zendframework/zendframework1": "1.*"
    },
    "authors": [
        {
            "name": "Kuba Florczuk"
        }
    ]
}

Install dependencies

Now when we have our composer.json ready it’s time to install our library

php composer.phar install

This will create vendor directory in your project. It’s wise to add this to .gitignore if You maintain Your project with git.

Adjust project files

Last thing to do is modify Your public/index.php file and add this lines just above require_once 'Zend/Application' :

// Ensure library/ is on include_path
set_include_path(implode(PATH_SEPARATOR, array(
    realpath(APPLICATION_PATH . '/../library'),
)));

/** Composer autoloader */
if (file_exists(realpath(APPLICATION_PATH . '/../vendor/autoload.php'))) {
    require_once realpath(APPLICATION_PATH . '/../vendor/autoload.php');
}

/** Zend_Application */
require_once 'Zend/Application.php';

This will allow You to use any other libraries that You’ll install via Composer.

Directadmin: changing IP – IP FailOver

One of my servers is located in OVH datacenter. Recently one of my clients mailbox got hacked by spammer and started sending huge amount of spam. Server got of course blacklisted. After blocking some spamming networks, changing passwords to mailboxes I’ve started removing server from various blacklists. The only problem I’ve had was with Google. I’ve send them couple removal requests but didn’t succeed…

After a week I’m come out with a different approach. OVH offers service called IP FailOver. It’s main purpose is to have IP address that You can switch between Your main server and backup server when main is down. You just have to assign Your IP FailOver address to You network interface’s alias. It’s quite simple in RHEL 6 OS family:

cd /etc/sysconfig/network-scripts/
cp ifcfg-eth0 ifcfg-eth0:0

Then You just edit new file:

DEVICE="eth0:0"
BOOTPROTO="static"
IPADDR=IP.FAILOVER.ADDR
NETMASK=255.255.255.255
ONBOOT=yes
BROADCAST=IP.FAILOVER.ADDR

Now just run ifup eth0:0 and check if Your new address is responding to ping and we’re good to go further.

Now when we have our new IP address up and running we have to change it in DirectAdmin. Instructions can be found on DirectAdmin’s help website. In short: You have to first extend your license. You can do this by clicking on “Licensing / Updates” as admin user in Your Admin Tools section and select “Update license”. Then write e-mail to DirectAdmin support with request of changing Your IP to IP FailOver address. After You get a positive response just run:

cd /usr/local/directadmin/scripts  
./getLicense.sh clientID license
service directadmin restart
./ipswap.sh old-ip new-ip

Now You just have to restart all services, and they will start responding to new IP Address.

There is only one problem with this setup… services are still sending stuff through old interface, so many servers will still recognise You as this old ip address. This means that You might have problem with downloading new license, because DirectAdmin requires connection from IP that license is registered to. There is also solution to this. We have to address all our traffic through IP FailOver address and this can be done by iptables:

iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source new-ip-addr

Now everything should work as planned. There might be just one problem left to solve – when You’re using OVH’s FTP Backup service it requires Your server to connect through old IP address. Againg iptables will be helpful:

iptables -t nat -A POSTROUTING -o eth0 -d backup-server-ip-addr -j SNAT --to-source old-ip-addr

This is it!

There is also one big advantage of whole process – when You’ll want to change server it will be much simpler to just assign IP FailOver to the new one and You won’t have to worry about changing DA’s license IP.