Setup a NFS Server on Ubuntu

Quick post on how to setup a NFS Server on Ubuntu and how to setup a mount point on the client side to interact with the NFS Server. Server Side: In this post 10.8.133.83 will be the…

How to setup a Gateway to Gateway VPN using IPSec on CentOS

window.dojoRequire(["mojo/signup-forms/Loader"], function(L) { L.start({"baseUrl":"mc.us15.list-manage.com","uuid":"3dfcff447b6ee598231eeb658","lid":"5c36081d06","uniqueMethods":true}) }) In this tutorial we will setup a gateway to gateway IPSec VPN using OpenSwan. The Scenario: The scenario we will…

Unable to Launch EMR Clusters with Cronjobs

The Issue: I was trying to Schedule the Launch of EMR Clusters using Cronjobs where I have noticed that it fails via cronjobs but passes via cli. The reasoning behind this in my experience was that the PATH variable that…

Creating a BASH init startup script

Create a simple bash init script, and pass the arguments to stop or start a process. In this example we will use the init script to control tcpdump. Pre-Requisites: Create, and apply permissions. $ touch /etc/init.d/tcpmonitor $ chmod +x…

Secure Passwordless SSH using Keys

A quick post on how to setup passwordless ssh access between linux hosts. When generating a key pair, it provides you with a public and a private key. You can place the public key on any server, and then it…