how to reset root password on centos
> login on server through putty with current username & password > type: passwd root it will ask to put the new password…thats it
ZIMBRA MAIL SERVER CONFIGURATION
Change your system host-name mail.linuxsolutions.org.in vi /etc/hosts 192.168.1.14 mail.linuxsolutions.org.in save&exit vi /etc/sysconfig/network mail.linuxsolutions.org.in save&exit ======================================================================================================= yum install bind bind-chroot caching-nameserver bind-utils ======================================================================================================= ======================CONFIGURE DNS=============================== cp /etc/named.rfc1912.zones /etc/named.conf vim /etc/named.conf // named.rfc1914.zones: // // Provided by Red Hat caching-nameserver package // // ISC BIND named zone configuration for zones recommended by // RFC 1912 section 4.1 … Read more
MySQL Database Administration – Part1
Running and Shutting down MySQL Server: First check if your MySQL server is running or not. You can use the following command to check this: ps -ef | grep mysqld If your MySql is running, then you will see mysqld process listed out in your result. If server is not running, then you can start … Read more
Load Balancing : Understanding Load Balancing
Why Load Balance is required? As the e-commerce industry continues to grow, more businesses rely on their Web sites to communicate with customers. A high-performance Web site that quickly and reliably delivers content gains and retains customers and is crucial to a successful and competitive e-business. Few potential customers will return to a frustratingly slow … Read more
ClearOS – Network Gateway and Network server : Introduction
ClearOS (formerly named ClarkConnect) is a Linux distribution, based on CentOS and Red Hat Enterprise Linux,. It is designed for use in small and medium enterprises as a network gateway and network server with a web-based administration interface. It is designed to be an alternative to Windows Small Business Server. ClearOS is a modular operating system … Read more
www – World wide web : Introduction to Web Hosting
What is the World Wide Web? The Web is a network of computers all over the world All the computers in the Web can communicate with each other All the computers use a communication protocol called HTTP Few Terminology : Web information is stored in documents called web pages Web pages are files stored on computers called web servers The … Read more
Creating Views in MySQL : How to create mysql views
Summary: in this tutorial, you will learn how to create views in MySQL by using the CREATE VIEW statement. Introduction to CREATE VIEW statement The syntax of creating a view in MySQL is as follows: 1234 5 CREATE[ALGORITHM = {MERGE | TEMPTABLE | UNDEFINED}]VIEW [database_name].[view_name]AS [SELECT statement] Algorithms The algorithm attribute allows you to control which mechanism is used when … Read more
mysql query log – Log all queries on mysql database
To enable the query log, put this in /etc/my.cnf in the [mysqld] section log = /path/to/query.log #works for mysql < 5.1.29 Also, to enable it from MySQL console SET general_log = 1; Remember that this logfile can grow very big on a busy server. update: With mysql 5.1.29+ , the log option is deprecated. To specify the logfile use general_log_file=/path/to/query.log Also, ... Read more
How to Install and Configure OpenSSH Server In Linux
Being a network administrator requires a deep knowledge about remote login protocols such as rlogin, telnet and ssh. The one I will discuss in this article is ssh, a secure remote protocol which is used to work remotely on other machines or transfer data between computers using SCP (Secure Copy) command. But, what is OpenSSH and how to install it in your Linux distribution? … Read more
Get started – Asterisk – Learn Asterisk Programming
What is Asterisk? Asterisk is an open source framework for building communications applications. Asterisk turns an ordinary computer into a communications server. Asterisk powers IP PBX systems, VoIP gateways, conference servers and other custom solutions. It is used by small businesses, large businesses, call centers, carriers and government agencies, worldwide. Asterisk is free and open … Read more