This can get quite important when your mail server is blacklisted, or if you somehow want to simply change the outgoing IP address. First of all, check that you DO have another ip address on another interface at the server. Either by ifconfig or anything else. To change the outgoing IP on a postfix mail […]
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If you use our LAMP installer script and want to add a new domain afterwards, we’ve created a simple script to ease up the process. This script creates a new user, adds the domain settings for Apache, adds a new MySQL Database and user, restarts necessary services. Simply get our script from here or on […]
If you struggled to cope with disk I/O on virtual host machines which runs on Centos or RHEL, there is a great system performance tuning tool named TUNED, comes with different profiles. for installing tuned; yum install tuned -y starting the service permanently; service tuned start chkconfig tuned on service ktune start chkconfig ktune on […]
Everything started with a few queries of isc.org thrugh open DNS servers located at our data center. Searching through the net we found that we are not the victims but a part of uncomprimised sources of a huge DDoS attack. A 60 byte query will turn into 50 times larger data directed to victims IP […]
Here on this article we’ll discuss some basic methods to quickly apply to the iptables service so that you can basically get things running up. First of all, there are a couple of ways to edit the iptables infrastructure. One way is to use the /sbin/iptables binary file to append each line, or you can […]
Deleting email from the exim queue is unfortunately not that simple. If you have a massive spammer in your system, you can clear the email originating from them with the command below. exim -bpru | tr ‘\n’ + | sed -e “s/++/=/g” | tr -d + | tr = ‘\n’ | grep “spammer@email.com” | awk […]
Last time I get into an embedded project I realised that I am getting tired of USART interface errors and I should definetely switch to a better organized tracing system. While sending debug data or any relevant data through network interface you can use an open source syslog server available through google. I used Syslog […]
Opening an sql connection from your game isn’t really safe. So you should write, use a server software or find another solution like the one I wrote this article. Why you should use http protocol instead of server software doing this ? These software might have bugs and if you don’t know any low level […]
Sometimes when writing your bash scripts, you may need some information about the network, such as the IP addresses, both IPv4 and IPv6, broadcast addresses, netmasks and such. There are two very basic ways of getting the necessary information in Linux systems, you should either choose the ip addr show method, and parse what’s coming […]
In this post, i’m gonna explain how to connect to a LDAP server via using PHP. First i wanna talk about some definitions; LDAP means Lightweight Directory Access Protocol. As you can understand from it’s name, it is a database which uses directory-tree based structure. It’s used by OpenLDAP, Sun Directory Server, Microsoft Active Directory […]
It is not uncommon for you to need the MySQL root password of a server, especially when you’re dealing with hundreds of different servers. Here’s the quickest way to reset it. (Don’t forget that you need to login to your server as root in order to achieve this) 1) Start MySQL in safe mode. 2) […]
This is kind of a common problem and may have several reasons. Sometimes when we simply want to restart the MySQL Server, we can get such an error: ERROR! MySQL server PID file could not be found! First of all, always check if the /tmp partition is full. This can happen when MySQL can’t write […]
Earlier I’ve posted an article describing how to add multiple ip addresses on a single network device. Even though you can add IP addresses on Direct Admin using it’s GUI, unfortunately the GUI fails if the netmask or the gateway is different. So if you have a server running Direct Admin with the IP address […]
Here’s a way to add JSON support for PHP on your CentOS server. yum install php-pear php-devel gcc make pecl install json cd /etc/php.d echo “extension=json.so” >> json.ini service httpd restart After these, you can easily check if it has been installed correctly. Either check your phpinfo() page or execute the following command. php […]
mod_python is one of the easiest ways to use your Python Scripts as web pages. To install mod_python on your Centos 6 server, simply follow the steps below. We also recommend using our LAMP installer, this method can easily be implemented with our installer. To install mod_python, we need the EPEL repositories: rpm –import https://fedoraproject.org/static/0608B895.txt […]
People using Direct Admin usually do the mistake to install anything new by using the yum repositories. In fact, Direct Admin has a custom build method, so when you want to add something new to your system, you might need to recompile what’s allready installed. The same goes for the PHP-SOAP too. Yet don’t freak […]
Installation of IonCube Loader on any variaty of Linux is very simple. Just get the copy from ioncube webpage itself, http://www.ioncube.com/loaders.php We will download the 64-bit version for our example. Then extract the file, copy the shared object file that matches your PHP version to an appropriate folder. To learn your PHP version you can […]
rsync is a very useful tool when it comes to backing up multiple files from remote or local targets. Below are a few nice examples you can use. To backup the whole contents of your /home directory to let’s say a usb disk, use the following. rsync -av /home /media/usb_disk Note that this will create […]
Cannot start session without errors, please check errors given in your PHP and/or webserver log file and configure your PHP installation properly. If you’re getting this error when starting phpMyAdmin, there are a few possibilities of what the problem may be. For starters, be sure that it is a server side problem. If this only […]
Even though it sounds like a simple problem, a lot of our customers have asked the question why they can’t get back ping responses from their MS Windows servers. The problem is simple, because on most flavors of MS Windows boxes, the firewall has disabled ICMP requests by default. To enable it, go to Start […]
Version Info: V0.2 21/06/2012 DO you ever wanted to set-up a testing server with – Apache virtual config, logs, paths setted, – MySQL server with password set, – FTP Server (Vsftpd), – PHP and PhpMyAdmin installed & configured on your server or VPS in seconds? If you answer “yes” to the question, you are in […]
Using short open tags, such as <? on your PHP code is not so clever. Other than the debate going on whether short open tags won’t be available on PHP6 or not, it is possible that your shared hosting has disabled it for some reason, or you might have to migrate your code sometime somewhere […]
This article is only applicable to H-Sphere control panel where old mysql passwords are stored as clear text. With the latest update, php 53 comes with mysqlnd module which doesn’t allow old_passwords to be used. In /etc/my.cnf comment old_passwords if any, Backup your MySQL database and restart mysql server and execute the following code: Create […]
If you get a 550 error as a reply when you email a user with directadmin, saying Remote host said: 550 “Unknown User” or The error that the other server returned was: 550 550 “Unknown User” (state 13). or something equivalent, then the problem might be your virtual domainowner settings. This happens with exim especially […]
Even though it’s easier to use yum, sometimes we need to compile PHP from source code. Below I’ll describe a method for compiling PHP 5.4.3 on CentOS, this works both on 5.x and 6.x and all the dependencies (except for PHP itself, of course ) will be retrieved via yum. After a fresh install of […]