Posts in 2019
Kubernetes Setup Using Ansible and Vagrant
By Naresh L J (Infosys) | Friday, March 15, 2019 in Blog
Objective This blog post describes the steps required to setup a multi node Kubernetes cluster for development purposes. This setup provides a production-like cluster that can be setup on your local machine. Why do we require multi node cluster …
Raw Block Volume support to Beta
By Ben Swartzlander (NetApp), Saad Ali (Google) | Thursday, March 07, 2019 in Blog
Kubernetes v1.13 moves raw block volume support to beta. This feature allows persistent volumes to be exposed inside containers as a block device instead of as a mounted file system. What are block devices? Block devices enable random access to data …
Automate Operations on your Cluster with OperatorHub.io
By Diane Mueller (Red Hat) | Thursday, February 28, 2019 in Blog
One of the important challenges facing developers and Kubernetes administrators has been a lack of ability to quickly find common services that are operationally ready for Kubernetes. Typically, the presence of an Operator for a specific service - a …
Building a Kubernetes Edge (Ingress) Control Plane for Envoy v2
By Daniel Bryant (Datawire), Flynn (Datawire), Richard Li (Datawire) | Tuesday, February 12, 2019 in Blog
Kubernetes has become the de facto runtime for container-based microservice applications, but this orchestration framework alone does not provide all of the infrastructure necessary for running a distributed system. Microservices typically …
Runc and CVE-2019-5736
By Kubernetes Product Security Committee | Monday, February 11, 2019 in Blog
This morning a container escape vulnerability in runc was announced. We wanted to provide some guidance to Kubernetes users to ensure everyone is safe and secure. What is runc? Very briefly, runc is the low-level tool which does the heavy lifting of …
Poseidon-Firmament Scheduler – Flow Network Graph Based Scheduler
By Deepak Vij (Huawei), Shivram Shrivastava (Huawei) | Wednesday, February 06, 2019 in Blog
Introduction Cluster Management systems such as Mesos, Google Borg, Kubernetes etc. in a cloud scale datacenter environment (also termed as Datacenter-as-a-Computer or Warehouse-Scale Computing - WSC) typically manage application workloads by …
Update on Volume Snapshot Alpha for Kubernetes
By DJing Xu (Google), Xing Yang (Huawei), Saad Ali (Google) | Thursday, January 17, 2019 in Blog
Volume snapshotting support was introduced in Kubernetes v1.12 as an alpha feature. In Kubernetes v1.13, it remains an alpha feature, but a few enhancements were added and some breaking changes were made. This post summarizes the changes. Breaking …
Container Storage Interface (CSI) for Kubernetes GA
By Saad Ali (Google) | Tuesday, January 15, 2019 in Blog
The Kubernetes implementation of the Container Storage Interface (CSI) has been promoted to GA in the Kubernetes v1.13 release. Support for CSI was introduced as alpha in Kubernetes v1.9 release, and promoted to beta in the Kubernetes v1.10 release. …
APIServer dry-run and kubectl diff
By Antoine Pelisse (Google Cloud) | Monday, January 14, 2019 in Blog
Declarative configuration management, also known as configuration-as-code, is one of the key strengths of Kubernetes. It allows users to commit the desired state of the cluster, and to keep track of the different versions, improve auditing and …
Posts in 2018
Kubernetes Federation Evolution
By Irfan Ur Rehman (Huawei), Paul Morie (RedHat), Shashidhara T D (Huawei) | Wednesday, December 12, 2018 in Blog
Kubernetes provides great primitives for deploying applications to a cluster: it can be as simple as kubectl create -f app.yaml. Deploy apps across multiple clusters has never been that simple. How should app workloads be distributed? Should the app …