redhat

What is Kloxo ? Kloxo is a web hosting control panel for Red Hat and CentOS Linux Distributions which was formerly known as Lxadmin. Kloxo is open source and free too which makes it a very popular Web hosting control panel among server administrators. It is a very good alternative for cPanel web...

In need to secure your server you should avoid default port for SSH as it will increase the security level and decrease risk of vulnerability. We all know that default SSH port is 22, we should change it to something else but you should must take care before choosing a number that it is not in...

SMTP_BLOCK option help to prevent spam email abuse on a CentOS Linux server that bypasses exim and sends spam emails out through port 25. By enabling this option on server you can bind the spammers to send out spam emails using socket connection from your server using any web scripts as it will...

In this article we will learn how to install Memcached on CentOS linux server. But, first we will discuss what is Memcached and for what purpose it is used. What is Memcached ? Memcached is a open source distributed, high performance memory object caching program that is primarily used to...

To create MySQL user you should have root access for SSH. First of all you have to login to MySQL server through command line. ----- # mysql -u root -p ****** ----- Here, -u option is for username and -p option is for password. Now, you will be at MySQL prompt and it looks like this : ----- #...

Sometimes we need to delete a MySQL database through command line. Before deleting a database you must check these points like you must have root access, before use DROP DATABASE you should check you have DROP privilages or not. First, we will login to the MySQL server through command line ...

This problem occurs when you run command "# mysql -u USER -p". It happens as MySQL is not running or installed on server. To rectify this we have first check whether MySQL is running or not. To check MySQL is Running or not type the following command: ---- # service mysqld status ---- You can...

Many a times we need to run MySQL query directly from command line to perform certain tasks like backup of MySQL database or creation of MySQL database and users, without logging into MySQL prompt. You can either run a single query quickly from command line Or you can run queries from Bash...

The "resolv.conf" is a file used to configure the system's Domain Name System (DNS) resolver which contains a list of nameservers IP addresses available for DNS resolution. It contains information which determines the operational parameters of the DNS Resolver. The DNS resolver translate the...

Introduction to FirewallD CentOS 7 : FirewallD is a complete firewall solution provided by default with CentOS 7. It control network traffic rules through IP tables and act as frontend controller. It is available with most Linux Distributions. The key features of FirewallD are that it uses zones...

What is php.ini file ? The php.ini file is the default configuration file for running applications that require PHP. It is used to control variables such as upload sizes, file timeouts, and resource limits. How to find php.ini location ? You can check php.ini file through two ways. 1). Through...

CentOS Web Panel is a free web hosting control panel which facilitates you to easily manage servers. The latest version of CentOS Web Panel 0.9.8.6 was released on 19th April 2015. This control panel is full with various features that provide an ease to manage and operate server operations...

Web Server signature is an information about the server and hosting operating system i.e. Apache version number and operating system info. By default configuration of Apache, any error page will show the full signature of the server (version number), that can be risky as it can be used by...

Due to spamming, spoofing and other malpractice email queue become loaded with thousand of unwanted emails. It will slow down your server performance and mainly affect your exim to deliver emails. It's not quite easy to sort out the genuine emails from these bulk spam mails as it is like finding...

How to check service status in Linux system (CentOS) ? Whenever we are troubleshooting any issue on server, we have to check service status on server whether they are running or not like Mysql, Apache, SMTP, TCP etc. To find out status of a service in Linux CentOS system, you can use SERVICE...

Nginx Error 413 Request Entity Too Large : This error is a very common error in nginx, which normally comes when we requests more information than is limited by PHP and Nginx configurations. It occurs on stand alone nginx server, when nginx acts as a front end server for apache at back end...

Changing the group of a user is quite easy and simple task, but it is not known to every user. In this topic we will tell you the commands through which not only you can add new user to a group but also change existing user's group too. The basic commands used are "useradd" and "usermod"...

In today's world mostly people use USB flash memories for data transfer and storage. CD's and floppies are almost past now. USB Flash memories are compact and store more data with respect to CD's and Floppies. New Linux users find it difficult to use USB devices in Linux systems. The real...

Have you ever faced this error while accessing PhpMyAdmin in cPanlel ? "Access Denied Unable to establish a PHP session. If you believe that this is in error or inadvertent, contact your system administrator and ask them to review your server settings." Well, we have the solution for this error...

To monitor and debug a Linux system performance is really a tough job for a system administrator in Linux. It's not quite easy for experts also to monitor and keep system up and running, But, there are many utilities through which monitoring your system becomes easy and reliable too. There are...