Send SNMP Traps from Nagios to Remote Management Host

Renewing Ovirt Engine certificates before they expire

In Red Hat Virtualization earlier than version 4.4 SP1, all certificates followed a 398 day lifetime. Starting in Red Hat Virtualization version 4.4 SP1, the self-signed internal certificates between hypervisors and the Manager follow a five year lifetime. Certificates visible to web browsers still follow the standard 398 day lifetime and must be renewed once […]

How to Install Nagios 4.3.4 on RHEL / CentOS

Nagios is an awesome Open Source monitoring tool, its provides you more comprehensive monitoring environment to always keep an eye on your all machines / networks whether you are in a your data center or just your small labs. With Nagios, you can monitor your remote hosts and their services remotely on a single window. […]

Howto setup Asterisk behind NAT

This HOWTO assumes that your FreePBX system is sitting behind a NATed firewall with no direct connection to the outside world and it is NOT in the DMZ zone. If you have your system facing outside, or have used Mapped IP addresses or other techniques, then it is assumed that you have adequate knowledge to […]