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Posts in 2021

  • 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 …

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  • 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 …

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  • 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 …

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  • 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 …

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  • 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 …

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  • 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 …

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  • Local Storage: Storage Capacity Tracking, Distributed Provisioning and Generic Ephemeral Volumes hit Beta

    Wednesday, April 14, 2021 in Blog

    Authors: Patrick Ohly (Intel) The "generic ephemeral volumes" and "storage capacity tracking" features in Kubernetes are getting promoted to beta in Kubernetes 1.21. Together with the distributed provisioning support in the CSI …

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  • kube-state-metrics goes v2.0

    Tuesday, April 13, 2021 in Blog

    Authors: Lili Cosic (Red Hat), Frederic Branczyk (Polar Signals), Manuel Rüger (Sony Interactive Entertainment), Tariq Ibrahim (Salesforce) What? kube-state-metrics, a project under the Kubernetes organization, generates Prometheus format metrics …

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  • Introducing Suspended Jobs

    Monday, April 12, 2021 in Blog

    Author: Adhityaa Chandrasekar (Google) Jobs are a crucial part of Kubernetes' API. While other kinds of workloads such as Deployments, ReplicaSets, StatefulSets, and DaemonSets solve use-cases that require Pods to run forever, Jobs are useful when …

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  • Kubernetes 1.21: CronJob Reaches GA

    Friday, April 09, 2021 in Blog

    Authors: Alay Patel (Red Hat), and Maciej Szulik (Red Hat) In Kubernetes v1.21, the CronJob resource reached general availability (GA). We've also substantially improved the performance of CronJobs since Kubernetes v1.19, by implementing a new …

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