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🎄This blog post is also a contribution to Festive Tech Calendar 2023, where during the month of December, experts from the tech community share their knowledge about a multitude of tech topics. As part of this initiative you can also support a fundraising for the Raspberry Pi Foundation. You’re welcome to check out all the contributions here: Festive Tech Calendar 2023 Kubernetes release cycle and its challenges As you might know since the beginning of time Kubernetes has been known for its quite frequent release cycle. With approximately 4 releases of new Kubernetes versions per year a specific version was supported for 9 months until Kubernetes version 1.18. With Kubernetes version 1.19 community support got extended by 3 months. At the time of publishing this blog post a specific version of Kubernetes is supported for 1 year. Support in this case means patching of security-related, dependency-related or other critical core issues. ...

KubeCon + CloudNativeCon North America 2023 is under a week away and I thought I would use this opportunity to share some of the personal reflections for the upcoming event, as well as highlight some of the sessions that I personally am looking forward to watching. Myself and Michael have also chatted about the event at Kubernetes Unpacked podcast - do check out this episode as well: Prepping For KubeCon+CloudNativeCon North America 2023. ...

Introduction When working with Kubernetes there may be cases where you may need to use port forwarding to get access to an application running inside the cluster. Some of the use cases may be: accessing information in internal applications that are not meant to be exposed for public access verifying that the application works as expected prior to exposing it for public access troubleshooting purposes Port forwarding is a functionality that is available in Kubernetes via kubectl port-forward command. This command creates a direct connection between the caller (typically a client machine) and the Pod where the application is running inside the cluster. You can either target a specific Pod or any Pod fronted by Kubernetes resources like Service or Deployment. You can read more about the command in official documentation: port-forward. ...

Last month, 18th-21st of April, KubeCon+CloudNativeCon Europe was happening in Amsterdam in the Netherlands, and it was HUGE! With a fully sold out event, with more than 10000 in-person participants, 5000+ online participants and 20 parallell tracks, it has been the largest conference I’ve attended in-person so far. I attended the event wearing many hats: a speaker, KCD organizer, CNCF ambassador and an attendee. Having these roles gave me an even broader perspective of the event which I want to share with the community😺 ...

There are cases where you may need to explicitly ensure that specific container image registries are blacklisted from being used in your Kubernetes clusters. Let me provide you with a very recent and relevant example. From 3rd April 2023, k8s.gcr.io legacy image registry is officially frozen which means that no images, future Kubernetes versions and patch releases for earlier Kubernetes versions will be pushed to this registry. At some point in the near future this legacy image registry will be completely deactivated. ...