# Posts from the Past, October 2025

DevFeed: [Posts from the Past, October 2025](<https://devfeed.tech/articles/posts-from-the-past-october-2025-10918.md>)

Original publisher: [Read original article](<https://blog.scottlowe.org/2025/10/22/posts-from-the-past-october-2025/>)

Author: Scott Lowe

Published: 2025-10-22T18:00:00Z

Content type: article

Language: en

Sources: [Scott's Weblog](<https://devfeed.tech/sources/scott-s-weblog.md>)

Topics: [Amazon Elastic Kubernetes Service](<https://devfeed.tech/topics/amazon-elastic-kubernetes-service.md>), [Kubernetes](<https://devfeed.tech/topics/kubernetes.md>), [Amazon Web Services](<https://devfeed.tech/topics/aws.md>), [Infrastructure as code](<https://devfeed.tech/topics/infrastructure-as-code.md>), [Azure](<https://devfeed.tech/topics/azure.md>)

Tags: [2025](<https://devfeed.tech/tags/2025.md>), [amazon-elastic-kubernetes-service](<https://devfeed.tech/tags/amazon-elastic-kubernetes-service.md>), [ansible](<https://devfeed.tech/tags/ansible.md>), [aws](<https://devfeed.tech/tags/aws.md>), [azure](<https://devfeed.tech/tags/azure.md>), [cilium](<https://devfeed.tech/tags/cilium.md>), [cli](<https://devfeed.tech/tags/cli.md>), [cloud](<https://devfeed.tech/tags/cloud.md>), [cni](<https://devfeed.tech/tags/cni.md>), [containers](<https://devfeed.tech/tags/containers.md>), [cri-o](<https://devfeed.tech/tags/cri-o.md>), [devops](<https://devfeed.tech/tags/devops.md>), [docker](<https://devfeed.tech/tags/docker.md>), [go](<https://devfeed.tech/tags/go.md>), [iac](<https://devfeed.tech/tags/iac.md>), [japan](<https://devfeed.tech/tags/japan.md>), [k8s](<https://devfeed.tech/tags/k8s.md>), [kubernetes](<https://devfeed.tech/tags/kubernetes.md>), [kubernetes-clusters](<https://devfeed.tech/tags/kubernetes-clusters.md>), [linux](<https://devfeed.tech/tags/linux.md>), [networking](<https://devfeed.tech/tags/networking.md>), [oci](<https://devfeed.tech/tags/oci.md>), [openstack](<https://devfeed.tech/tags/openstack.md>), [security](<https://devfeed.tech/tags/security.md>), [vagrant](<https://devfeed.tech/tags/vagrant.md>)

## AI overview

A retrospective roundup revisiting the author's Kubernetes, cloud infrastructure, and container-related posts published in October across several years. It highlights work involving Pulumi, Amazon EKS, Bottlerocket OS, Azure Kubernetes Service, Cluster API, AWS, kubeadm, Ansible, Vagrant, and OpenStack.

## Source excerpt

Every now and then, I publish one of these "Posts from the Past" articles that looks back on content I've created and posted over the life of this site. This year marks 20 years of content--I can hardly believe it! Don't worry, though; you won't have to go through 20 years of past posts. Here is a selection of posts from mid- to late October over the last decade or so. I hope you find something useful, informative, or at least entertaining! October 2024 Last year I shared information on how to use Pulumi to stand up an Amazon Elastic Kubernetes Service (EKS) cluster with Bottlerocket OS on the Kubernetes nodes--without using any higher-level Pulumi components. October 2022 In 2022, after getting irritated with what I felt was a poor user experience when accessing Azure Kubernetes Service (AKS) clusters created with Pulumi, I published this post on how to change the Kubeconfig file for a more streamlined user experience. October 2021 Cluster API is the name of the game for multiple posts in October 2021. First I wrote this article on kustomize transformer configurations for Cluster API v1beta1 (so that you can use kustomize to manipulate Cluster API manifests), followed up later that month with an article on influencing Cluster API AMI selection. I also touched upon using the external (out of tree) cloud provider for AWS that month, a topic I am revisiting soon as I explore integrating Talos Linux with AWS. October 2020 More Cluster API content--this time discussing IaC considerations for Cluster API (think things like integrating workload clusters with existing AWS workloads or services). October 2019 In October 2019 I explored using jk to programmatically create Kubernetes manifests, and discussed how to use kustomize with kubeadm configuration files. October 2018 Plenty of articles discuss the use of kubeadm to bootstrap Kubernetes clusters (including a few I wrote!), but what of talking about using kubeadm to stand up an etcd cluster? I've got you covered! October 2