Posts in 2021
Writing a Controller for Pod Labels
Monday, June 21, 2021 in Blog
Authors: Arthur Busser (Padok) Operators are proving to be an excellent solution to running stateful distributed applications in Kubernetes. Open source tools like the Operator SDK provide ways to build reliable and maintainable operators, making it …
Using Finalizers to Control Deletion
Friday, May 14, 2021 in Blog
Authors: Aaron Alpar (Kasten) Deleting objects in Kubernetes can be challenging. You may think you’ve deleted something, only to find it still persists. While issuing a kubectl delete command and hoping for the best might work for day-to-day …
Kubernetes 1.21: Metrics Stability hits GA
Friday, April 23, 2021 in Blog
Authors: Han Kang (Google), Elana Hashman (Red Hat) Kubernetes 1.21 marks the graduation of the metrics stability framework and along with it, the first officially supported stable metrics. Not only do stable metrics come with supportability …
Evolving Kubernetes networking with the Gateway API
Thursday, April 22, 2021 in Blog
Authors: Mark Church (Google), Harry Bagdi (Kong), Daneyon Hanson (Red Hat), Nick Young (VMware), Manuel Zapf (Traefik Labs) The Ingress resource is one of the many Kubernetes success stories. It created a diverse ecosystem of Ingress controllers …
Graceful Node Shutdown Goes Beta
Wednesday, April 21, 2021 in Blog
Authors: David Porter (Google), Mrunal Patel (Red Hat), and Tim Bannister (The Scale Factory) Graceful node shutdown, beta in 1.21, enables kubelet to gracefully evict pods during a node shutdown. Kubernetes is a distributed system and as such we …
Defining Network Policy Conformance for Container Network Interface (CNI) providers
Tuesday, April 20, 2021 in Blog
Authors: Matt Fenwick (Synopsys), Jay Vyas (VMWare), Ricardo Katz, Amim Knabben (Loadsmart), Douglas Schilling Landgraf (Red Hat), Christopher Tomkins (Tigera) Special thanks to Tim Hockin and Bowie Du (Google), Dan Winship and Antonio Ojea (Red …
Annotating Kubernetes Services for Humans
Tuesday, April 20, 2021 in Blog
Author: Richard Li, Ambassador Labs Have you ever been asked to troubleshoot a failing Kubernetes service and struggled to find basic information about the service such as the source repository and owner? One of the problems as Kubernetes …
Introducing Indexed Jobs
Monday, April 19, 2021 in Blog
Author: Aldo Culquicondor (Google) Once you have containerized a non-parallel Job, it is quite easy to get it up and running on Kubernetes without modifications to the binary. In most cases, when running parallel distributed Jobs, you had to set a …
Volume Health Monitoring Alpha Update
Friday, April 16, 2021 in Blog
Author: Xing Yang (VMware) The CSI Volume Health Monitoring feature, originally introduced in 1.19 has undergone a large update for the 1.21 release. Why add Volume Health Monitoring to Kubernetes? Without Volume Health Monitoring, Kubernetes has no …
Three Tenancy Models For Kubernetes
Thursday, April 15, 2021 in Blog
Authors: Ryan Bezdicek (Medtronic), Jim Bugwadia (Nirmata), Tasha Drew (VMware), Fei Guo (Alibaba), Adrian Ludwin (Google) Kubernetes clusters are typically used by several teams in an organization. In other cases, Kubernetes may be used to deliver …