Category: Linux

Learn | Teach Open Source Technologies

Blank Screen fixing on WordPress after Nginx Update from 1.4.6. to 1.6.3

After updating Nginx 1.4.6  to 1.6.3 on Ubuntu 14.04 it goes blank screen on wordpress CMS What to do in this situation. Just open your  default file in /etc/nginx/sites-enabled/ directory

How to Install MRTG with SNMP on Linux RedHat 6.5 / CentOS 6.5

Before you Install MRTG please verify apache is installed on your machine [root@mysql01 ~]# vi /etc/hosts localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 mysql01

The GHOST Vulnerability Bug discovered by researchers at Qualys Inc. in Linux glibc library

  Courtesy: The GHOST vulnerability is a serious weakness in the Linux glibc library. It allows attackers to remotely take complete control of the victim system without having any prior knowledge of system credentials. CVE-2015-0235 has been assigned to this issue.

How to Install RHQ on CentOS 6.5

Install PosgreSQL 3.1.1. Type ‘yum install postgresql*’ making sure to include the asterisk (*) 3.1.2. Type ‘y’ when prompted (happens twice) Confirm java version 4.1.    Type ‘java –version’ 4.2.    Confirm it’s running at least 1.6 and using OpenJDK (or Oracle/Sun Java or JRockit, but NOT GNU Libgcj)


VPN INSTALLATION on Linux [root@app-01 ~]# uname -a Linux app-01 2.6.32-431.11.2.el6.x86_64 #1 SMP Tue Mar 25 19:59:55 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux [root@app-01 /]# mkdir download [root@app-01 /]# cd download/ [root@app-01 download]# ll total 0 [root@app-01 download]# mkdir vpn [root@app-01 download]# cd vpn/ [root@app-01 vpn]# ll total 0

How to verify DDOS attack with netstat command on Linux Terminal

How to verify DDOS attack with netstat command on Linux Terminal Some examples with explanation netstat -na This display all active Internet connections to the server and only established connections are included. netstat -an | grep :80 | sort

How to setup Network File Server on CentOS / Redhat with Automatic Backups — RackSpace

NFS SERVER SETUP ON CETNOS 6.5 / Redhat 6.5 / Fedora In this tutorial let us see how to install and configure NFS server and how to share files between NFS server and clients. Though i have tested these steps in Cent-OS 6.5 32 bit edition, it will work on RHEL/Fedora/ 64 bit architecture. Scenario NFS Server Operating System : CentOS 6.5 64 bit (Minimal server install) NFS Server Operating System  : CentOS 6.5 64 bit (Minimal server install) NFS Client Operating System  : CentOS 6.5 64 bit (Desktop Minimal) NFS Server IP Address              Host rackspace-nfs01: NFS Server IP Address              Host rackspace-nfs02: NFS Client IP Address               Host rackspace-jon:

How to install CACTI ON CentOS / Red Hat / Fedora Linux

CACTI INSTALLATION ON CENTOS Install the required packages on your server machines, to install these packages you need to login as root  # yum install mysql-server mysql php-mysql php-pear php-common php-gd php-devel php php-mbstring php-cli php-snmp php-pear-Net-SMTP php-mysql httpd