Share Private network between Two Tenants

Courtesy Preface Assumptions Solution Import Route Target Security Group Futher Reading Courtesy Bytes around me :-) Preface Sharing Private network is a common use case in Cloud Environment. Normally RBAC will help you to achieve. Since Newton release, this feature is Available. But the question is which SDN you are using in your Environment. If you are using Opencontrail 3.2 as SDN, you cannot go with RBAC. Assumptions Openstack Release Ocata Opencontrail 3. [Read More]

Configure Multiple Default Routes, Linux

Courtesy Preface Use Case Implementation New Routing Table Add Policy Rules Flush the routing cache Testing Rules Further Reading Courtesy Tutorial credit goes to [Omar Hamad ] (https://www.linkedin.com/in/omermahgoub/) the real Architect I have seen in last few years. Working with him for the past 3 Years, and learned a Lot. We are going to miss u :( Preface When configuring a Linux host with multiple interface, each with its own default gateway, ensuring route symmetric is a bet challenging for any given pair of endpoint. [Read More]

How to install OpenVPN in Openstack Environment

Preface Use Case Deployment Setup Installation VDC Configuration Client Configuration Preface OpenVPN is an open-source commercial software that implements Virtual Private Network (VPN) techniques to create secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities. It uses a custom security protocol that utilizes SSL/TLS for key exchange. It is capable of traversing network address translators (NATs) and firewalls. It was written by James Yonan and is published under the GNU General Public License. [Read More]

Diagnose network with MTR

Preface MTR is a powerful tool which enables administrators to diagnose and isolate networking errors and provide reports of network status to upstream providers. MTR represents an evolution of the traceroute command by providing a greater data sample, as if augmenting traceroute with ping output. This document provides an in depth overview of MTR, the data it generates, and how to interpret and draw conclusions based on the data provided by it. [Read More]