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Category Archives for "Sreenivas Makam’s Blog"

Opensource Meetup Presentation

I did a presentation on CoreOS and Service Discovery in Opensource Meetup group last week. Following are related slides and demo recording. CoreOS Overview and Current Status Slides: CoreOS Overview and Current Status from Sreenivas Makam CoreOS HA Demo recording: Scripts used are available here. Service Discovery using etcd, Consul and Kubernetes Slides: Service Discovery using … Continue reading Opensource Meetup Presentation →

Microservices Infrastructure using Mantl

Mantl is an Open source project from Cisco and it provides an integrated solution to deploy distributed Microservices. Any company deploying Microservices has to integrate different components before the solution becomes production ready. Mantl makes it easier by integrating the different components and providing the glue software that integrates the components. In this blog, I … Continue reading Microservices Infrastructure using Mantl →

Baremetal cloud using Packet

Typical Opensource demo applications comes packaged as a Vagrant application which starts a bunch of VMs and does automatic provisioning. I have a Windows machine with Virtualbox and VMWare player installed. Since Virtualbox does not support nested virtualization with 64 bit VMs(More details can be found in my previous blogs on Virtualbox and VMWare player), … Continue reading Baremetal cloud using Packet →

Docker Security – part 4(Container image)

This is the fourth part of my Docker security series. In this blog, we will cover ways to secure Container images. Following are the other parts (1, 2, 3) Docker image signing: Docker Container images can be stored either in public or private registry. It is needed to sign Container images so that the client knows that image … Continue reading Docker Security – part 4(Container image) →

Docker Security – part 3(Engine access)

This is the third part of my Docker security series. In this blog, we will cover ways to securely access Docker engine. Following are the other parts (1, 2, 4) Docker engine access: Docker engine runs as a daemon and by default listens on the Unix socket, “unix:///var/ run/docker.sock”. Docker start options are specified in “/etc/default/docker”. To allow … Continue reading Docker Security – part 3(Engine access) →

Docker Security – part 2(Docker Engine)

This is the second part of my Docker security series. In this blog, we will cover security features around Docker engine. Following are the other parts(1, 3, 4) Namespaces: Docker makes use of the following Linux kernel Namespaces to achieve Container isolation: pid namespace mount namespace network namespace ipc namespace UTS namespace To illustrate the … Continue reading Docker Security – part 2(Docker Engine) →

Docker Security – part 1(Overview)

There is a general perception that Containers, especially Docker Containers, are insecure. It is true that Containers are not as secure as VM since all Containers in a single machine share the same kernel and compromising one Container can cause host level compromise or compromise with other Containers. There are many ways to harden Containers and … Continue reading Docker Security – part 1(Overview) →

Hashicorp Atlas workflow with Vagrant, Packer and Terraform

I have used and loved Vagrant for a long time and I recently used Consul and I was very impressed by both these Devops tools. Recently, I saw some of the videos of Hashiconf and I learnt that Hashicorp has an ecosystem of tools addressing Devops needs and that these tools can be chained together to create complete … Continue reading Hashicorp Atlas workflow with Vagrant, Packer and Terraform →

Gopaddle Meetup Bangalore – CI, CD Presentation

Following link captures the slides on CI, CD with Docker, Jenkins and Tutum that I presented at GoPaddle meetup, Bangalore on January 23, 2015. You can find more details on the meetup here. In this presentation, I cover the following: Overview of Continuous Integration(CI), Continuous deployment(CD) Tutum Overview Jenkins with Docker Integration CI, CD Use cases … Continue reading Gopaddle Meetup Bangalore – CI, CD Presentation →

CI, CD with Docker, Jenkins and Tutum

In this blog, I will give an overview of Continuous Integration (CI) and Continuous Deployment (CD) and cover few CI, CD Use cases with Docker, Jenkins and Tutum. Docker provides Container runtime and tools around Containers to create a Container platform. Jenkins is a CI/CD application to build, test and deploy applications. Tutum is a SaaS … Continue reading CI, CD with Docker, Jenkins and Tutum →

Ansible book – Technical review

I recently did a technical review for “Mastering Ansible” book by Jesse Keating. This book covers usage of Ansible for automation with practical examples. If anyone is interested, please look at the book. Pre-requisite is to have basic Ansible knowledge. Ansible is similar to configuration management tools like Chef, Puppet. Agent-less architecture and short learning … Continue reading Ansible book – Technical review →
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