Heck - Kubernetes for Developers

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Joseph Heck has broad development and management experience across start-ups and large companies. He has architected, developed, and deployed a wide variety of solutions, ranging from mobile and desktop applications to cloud-based distributed systems.

He builds and directs teams and mentors individuals to improve the way they build, validate, deploy, and run software. He also works extensively with and in open source, collaborating across many projects, including Kubernetes.

Paul Adamson has worked as an Ops engineer, a developer, a DevOps engineer, and all variations and mixes of these. When not reviewing this book, he keeps busy helping companies embrace the AWS infrastructure. His language of choice is PHP for all the good reasons and even some of the bad ones, but mainly habit. Apart from reviewing this book, he has been working for Healthy Performance Ltd., helping to apply cutting-edge technology to a cutting-edge approach to wellbeing.

Jakub Pavlik is a co-founder, former CTO, and chief architect of tcp cloud who has worked several years on the IaaS cloud platform based on OpenStack-Salt and OpenContrail projects, which were deployed and operated for global large service providers. Currently as the director of product engineering, he collaborates on a new Mirantis Cloud Platform for NFV/SDN, IoT, and big data use cases based on Kubernetes, containerized OpenStack, and OpenContrail. He is a member of the OpenContrail Advisory Board and is also an enthusiast of Linux OS, ice hockey, and films. He loves his wife, Hanulka.

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It's getting more common to find yourself responsible for running the code you've written as well as developing the features. While many companies still have an operations group (generally retitled to SRE or DevOps) that help with expert knowledge, developers (like you) are often being asked to expand your knowledge and responsibility scope.

There's been a shift to treating infrastructure-like code for some time. Several years ago, I might have described the boundary as Puppet is used by operations folks and Chef is used by developers. All of that changed with the advent and growth first of clouds in general, and more recently with the growth of Docker. Containers provide a level of control and isolation, as well as development flexibility, that is very appealing. When using containers, you quickly move to where you want to use more than one container a time, for isolation of responsibility as well as horizontal scaling.

Kubernetes is a project open sourced from Google, now hosted by the cloud-native computing foundation. It exposes many of the lessons from Google's experience of running software in containers and makes it available to you. It encompasses not only running containers, but grouping them together into services, scaling them horizontally, as well as providing means to control how these containers interact together and how they get exposed to the outside world.

Kubernetes provides a declarative structure backed with an API and command-line tools. Kubernetes can be used on your laptop, or leveraged from one of the many cloud providers. The benefit of using Kubernetes is being able to use the same set of tools with the same expectations, regardless of running it locally, in a small lab at your company, or in any number of larger cloud providers. It's not exactly the write once, run anywhere promise of Java from days gone by; more we'll give you a consistent set of tools, regardless of running on your laptop, your company's datacenter, or a cloud provider such as AWS, Azure, or Google.