Archive

Category Archives for "Sreenivas Makam’s Blog"

CoreOS overview

This blog is part of my ongoing series on Docker containers. In this blog, I will cover basics of CoreOS and some hands-on stuff I tried with CoreOS. As mentioned in my other blog on Docker  orchestration, CoreOS falls in the category of specialized Linux distributions that can host Containers and are suitable for massive server deployments. … Continue reading CoreOS overview

Docker Overview

Even though Linux container technology has been available for quite some time, Docker has revolutionized the container technology with its simple packaging that allows portability of applications. Docker packages the applications along with the dependencies like related libraries into an simple image. This single image can be then run on different locations like bare-metal, VM, … Continue reading Docker Overview

Group based policy in Opendaylight

This is a continuation of my previous blog on Group based policy(GBP). In this blog, I will cover the GBP features in Opendaylight helium release, Use-cases that are published in the Opendaylight wiki as well as different usecase that I tried out. Group based policy in Opendaylight: Following diagram is from Opendaylight GBP wiki: Openstack here … Continue reading Group based policy in Opendaylight

Opendaylight Helium release

Earlier, I was using Opendaylight Hydrogen release and recently, I tried out Opendaylight Helium release. In this blog, I have shared some of my experiences with Helium. Following are some important additions to Helium compared to Hydrogen. For more details, please refer Opendaylight webpage. Hardening of the controller, Clustering capability, Security options like AAA. Better … Continue reading Opendaylight Helium release

Mininet Internals and Network Namespaces

Mininet is a very powerful virtual network emulation system that’s generally used in SDN development environments. With Mininet, a complex network with hundreds of switches can be simulated in a laptop and this opens up testing real-life network usecases. I have covered Mininet usage in 1 of my earlier blogs on tools used with Opendaylight. … Continue reading Mininet Internals and Network Namespaces

Recent Networking Opensource projects – OPNFV, Openconfig, ONOS

I came across few recent Opensource projects which I found them to be interesting. In this blog, I will cover some details on OPNFV, Openconfig, ONOS. There is no relation between the 3 projects, the common thing is all the 3 projects are focussed on Networking and Cloud and all are relatively new. OPNFV OPNFV … Continue reading Recent Networking Opensource projects – OPNFV, Openconfig, ONOS

Vagrant – Overview and Opendaylight Vagrant Image

Recently, I came across this tool called Vagrant that eases the creation and sharing of VM work environment. I played with it and found it very useful. Vagrant integrates with VM hosting providers like Virtualbox, Vmware and AWS. Different devops tools like Chef, Puppet, Ansible are integrated with Vagrant. In this blog, I will cover … Continue reading Vagrant – Overview and Opendaylight Vagrant Image

Openstack distribution

In the last few months, following were some acquisitions that happened: Cisco acquiring Metacloud, EMC acquiring Cloudscaling, HP acquiring Eucalyptus. Metacloud and Cloudscaling have Openstack based distributions, Eucalyptus has a cloud OS similar to Openstack. This set of acquisitions prompted me to look little closely at Openstack distributions and following blog is a result of this. … Continue reading Openstack distribution

Storage Primer

Storage is a very critical component in the current IT domain. Choosing the right Storage platform and software is a critical part of a good Data center whether it is internal or external cloud. Even though I understood some Storage basics, I never ventured deep to understand the different storage technologies available. I tried to … Continue reading Storage Primer