Warning: Group KVM does not exist   If you are getting below error while install KVM on Centos then use solution provided here You can install  KVM  Virtualization by using yum command. Simply use below commands to install KVM on Centos #yum -y groupinstall …

 Restrict drupal admin section to open with website/domain   To restrict drupal admin for public network we have to take help mod rewrite module. By this way we can apply restriction. Simply we have to write mod rewrite rule <IfModule mod_rewrite.c> RewriteEngine on RewriteCond %{HTTP_HOST} …

ERROR:  Invalid command ‘SecRuleEngine’, perhaps misspelled or defined by a module not included in the server configuration[solved]                When you installed mod_security with Apache while restarting Apache, it won’t restart. It goes down due to Apache misconfiguration. Solution: You installed/compiled mod-security and add modsecurity.conf …

ERROR: configure: error: pcre library is required While installing mod-security in Apache you might stop at the time of source code configuration. You might get below error. configure: error: pcre library is required Don’t be afraid here is solution. Install PCRE-DEVEL package to fix this …

SFTP with different port and user name   What is sftp? The SSH File Transfer Protocol is a network protocol that provides file access, file transfer, and file management functionalities over any reliable data stream In sftp we directly use server’s ip address and default …

         How to enable Apache server status Go through below steps to enable server status in apache   Step 1: Check mod_Status module is compiled with Apache. Check mod_status module is loaded is DSO modules list. # LoadModule status_module modules/mod_status.so   Step 2: Comment out …

                                                       Apache Multi-Processing module(MPM)   This Multi-Processing Module (MPM) implements a non-threaded, preforking web server that handle’s Apache users requests. It is best for isolating each request, so that problem with a single request won’t affect any other running reuest. How it Works: A single …

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