The Unexpected Kubernetes: Part 2: Volume and Many Ways of Persisting Data

Recap Last time we talked about PV, PVC, Storage Class and Provisioner. To quickly recap: Originally PV was designed to be a piece of storage pre-allocated by administrator. Though after the introduction of Storage Class and Provisioner, users are able to dynamically provision PVs now. PVC is a request for a PV. When used with Storage Class, it will trigger the dynamic provisioning of a matching PV. Read More…

Sheng Yang
Sheng Yang
event October 11, 2018
timer Read Time: 11 minutes

Kubernetes versus Docker: What's the difference?

Docker vs Kubernetes: The Journey from Docker to Kubernetes The need to deploy applications from one computing environment to another quickly, easily, and reliably has become a critical part of enterprise’s business requirements and DevOps team’s daily workflow. It’s unsurprising then, that container technologies, which make application deployment and management easier for teams of all sizes, have risen dramatically in recent years. At the same time, however, virtual machines (VM) as computing resources have reached their peak use in virtualized data centers. Read More…

Faruk Caglar, PhD
Faruk Caglar, PhD
event October 9, 2018
timer Read Time: 7 minutes

Setup a basic Kubernetes cluster with ease using RKE

In this post, you will go from 3 Ubuntu 16.04 nodes to a basic Kubernetes cluster in a few simple steps. To accomplish this, you will be using Rancher Kubernetes Engine (RKE). To be able to use RKE, you will need 3 Linux nodes with Docker installed (see Requirements below). This won’t be a production ready cluster, but enough to get you familiar with RKE, some Kubernetes and be able to play around with the cluster. Read More…

Sebastiaan van Steenis
Sebastiaan van Steenis
event September 26, 2018
timer Read Time: 14 minutes

What's new in Kubernetes 1.12

Kubernetes 1.12 will be released this week on Thursday, September 27, 2018. Version 1.12 ships just three months after Kubernetes 1.11 and marks the third major release of this year. The short cycle is inline with the quarterly release cycle the project has followed since it’s GA in 2015. Kubernetes releases 2018 | Kubernetes Release | Date | |--------------------|--------------------| | 1.10 | March 26, 2018 | | 1.11 | June 27, 2018 | | 1. Read More…

event September 24, 2018
timer Read Time: 5 minutes

The Unexpected Kubernetes: Part 1: PV, PVC, Storage Class and Provisioner

Foreword Anyone who has followed the cloud computing area in recent years would notice and probably get involved in the rise of Docker and Kubernetes. Today, the Cloud’s Big Three (Google, Amazon, Microsoft) all offer managed Kubernetes services on top of their traditional public cloud services. Powerful, scalable, resilient, in many people’s mind, Kubernetes is becoming the ultimate answer to cloud computing. And yet I am not so sure about Kubernetes, even though it builds upon 15 years of experience of running production workloads at Google(btw, it’s a great paper, I’ve read it multiple times). Read More…

Sheng Yang
Sheng Yang
event September 20, 2018
timer Read Time: 9 minutes

Intro to Kubernetes and Rancher 2.0 Online Training

Ready to learn more about using Kubernetes and Rancher 2.0? This free online training is aimed at users new to Kubernetes, or those interested in using Rancher to easily deploy and manage Kubernetes. In this session, our experts will walk you through: Essential Kubernetes concepts The key components of a Kubernetes deployment Deploying and scaling a containerized application with Kubernetes, Helm, and Rancher All demonstrations are done live and in real-time. Read More…

event August 23, 2018

CICD Debates: Drone vs Jenkins

Introduction Jenkins has been the industry standard CI tool for years. It contains a multitude of functionalities, with almost 1,000 plugins in its ecosystem, this can be daunting to some who appreciate simplicity. Jenkins also came up in a world before containers, though it does fit nicely into the environment. This means that there is not a particular focus on the things that make containers great, though with the inclusion of Blue Ocean and pipelines, that is rapidly changing. Read More…

event January 31, 2018
timer Read Time: 10 minutes

Using Kubernetes API from Go

Last month I had the great pleasure of attending Kubecon 2017, which took place in Austin, TX. The conference was super informative, and deciding on what session to join was really hard as all of them were great. But what deserves special recognition is how well the organizers respected the attendees’ diversity of Kubernetes experiences. Support is especially important if you are new to the project and need advice (and sometimes encouragement) to get started. Read More…

Alena Prokharchyk
Alena Prokharchyk
event January 19, 2018
timer Read Time: 8 minutes

Welcome to the Era of Immutable Infrastructure

With the recent \“container revolution,\” a seemingly new idea became popular: immutable infrastructure. In fact, it wasn’t particularly new, nor did it specifically require containers. However, it was through containers that it became more practical, understandable, and got the attention of many in the industry. So, what is immutable infrastructure? I’ll attempt to define it as the practice of making infrastructure changes only in production by replacing components instead of modifying them. Read More…

event December 19, 2017
timer Read Time: 5 minutes

Using Vagrant to Emulate Rancher Environments

I spend a large amount of my time helping clients implement Rancher successfully. As Rancher is involved in just about every vertical, I come across a large number of different infrastructure configurations, including (but not limited to!) air-gapped, proxied, SSL, HA Rancher Server, and non-HA Rancher Server. Scenario & Criteria What I wanted was a way to quickly emulate an environment to allow me to more closely test or replicate an issue. Read More…

event November 21, 2017
timer Read Time: 4 minutes


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