How to deploy multi node OpenStack cloud on your laptop (Part-1)

Deploying a cloud solution like OpenStack is hard. You have to install different services on different server, perform many different functions to orchestrate the cloud. It is a common question for those who wants to deploy OpenStack that how to start? How can I ensure that everything is in order  or every component …

How to implement 2 factor authentication for SSH on Ubuntu 16.04

Hello everyone. Today I’ll show you how to implement 2 factor authentication for SSH on Ubuntu 16.04 server using the Google Authenticator app. We will use ssh key (1st factor) and a randomly generate code (2nd factor) by Google Authenticator to login to our Ubuntu server. I use Amazon EC2 …

How to detect and fix Dirty COW (CVE-2016-5195) issues on Ubuntu kernel

  A serious bug has been detected recently in Linux kernel named Dirty COW (CVE-2016-5195). An unprivileged local user can use this flaw to gain write access in the system. The bug existed since around 2.6.22+ (release in 2007) and was fixed on Oct 18, 2016. Exploitation of this bug does …

How to launch and connect Amazon EC2 Linux (Ubuntu 14.04 LTS) instances….

Topic Covered AWS Free tier which include 750 hours per month instance usage. 30 GB of storage. Expire 12 months after sign-up. You can find more information here about AWS free tire. Prerequisite Before launching To launch an instance in AWS first you need to sign-up or open an account. …

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