KubeFM

On average, Kubernetes nodes running on ARM instances are 20% cheaper than their AMD counterpart.Optimising your cloud bill is tempting, but how do you seamlessly migrate existing workloads to a different architecture?And how do you do it at scale, with more than 4000 engineers and 30 clusters in 4 regions?In this episode of KubeFM, Thibault and Miguel explain how Adevinta built an internal platform on Kubernetes for mixed AMD and ARM workloads.You will learn:The challenges they faced with validating containers for mixed architecture with a mutating webhook and the open source solution they came up with: noe.Building an internal platform requires careful planning and designing simple interfaces that are backwards compatible.How to not DDoS your container registries.How to onboard users to an internal platform and evangelise it.SponsorThis episode is sponsored by LearnKube — become an expert in KubernetesMore infoFind all the links and info for this episode here: https://ku.bz/_k-Y1jgFSInterested in sponsoring an episode? Learn more.

The best way to learn something is to break it or to build it yourself.And that's precisely what Luca did to understand how Linux containers (and Docker) work: he built his own, Barco.In this episode of KubeFM, you will learn:Why Linux containers "don't exist" but are the product of several Linux features you can put together and configure properly to get what we know as containers.How Kernel features such as cgroups and namespaces isolate a process.How you can use seccomp and capabilities to secure the container.How to make the right syscall from C to build your own container engine.Also, Luca explained how he learned how to build Barco from scratch, detailing the (struggle) to find reputable sources and (lack of) respected books.SponsorThis episode is sponsored by LearnKube — become an expert in KubernetesMore infoFind all the links and info for this episode here: https://ku.bz/5W1r90mvPInterested in sponsoring an episode? Learn more.

What if Kubernetes was so easy to install and manage to be foolproof?In this KubeFM, Mat argues that GKE is the only Kubernetes managed service that offers a beginner-friendly and thought-through experience in running a Kubernetes cluster.Follow Mat's journey to AKS, GKE and EKS and learn:How GKE autopilot can help you optimize costs and reduce underutilized node resources.How the GKE container-optimized OS prevents and eliminates an entire set of security misconfigurations in node management.How GCP's application of machine learning on the IAM permissions can help you gradually refine security permissions as applications are deployed.But Mat didn't stop there and had more food for thought:Are we over-logging and over-monitoring in Kubernetes?CNI and Ingress have evolved since their inception. What happens now that we are stuck with those decision choices?Is there a simpler alternative to Kubernetes that is multi-cloud and cloud agnostic, and what could it look like?More infoFind all the links and info for this episode here: https://ku.bz/G6tPB0114Interested in sponsoring an episode? Learn more.

Network Policy usage is inverted.It's easier to list the services that you want to connect to, but Network Policy forces you to list all clients that can connect to your pod.How would you even know that another team plans to connect your apps?But if Network Policy is not the right tool, then what should you use?In this KubeFM podcast, you will explore:How Network Policies are not as bad as you might think, but they are low-level APIs that are not always practical to use directly.Intent-based Access Control (IBAC) as a higher-level abstraction to describe your network segmentation requirements.How you can use IBAC to generate Network Policies, Istio Authorization Policies, AWS IAM & Roles, and more.More infoFind all the links and info for this episode here: https://ku.bz/Xhd2xKDH7Interested in sponsoring an episode? Learn more.