Ubuntu Archives - Page 3 of 10

Move HashiCorp Vault OSS to Another AWS EC2 Instance (Ubuntu 24.04, File Storage, AWS KMS Auto-Unseal)

Makson Lee / January 23, 2026

This post shows how to move a single-node Vault OSS deployment from one EC2 instance to another existing EC2 host

Makson Lee / January 20, 2026

This is the reverse of my previous migration (VMware Workstation → KVM). The safe, repeatable flow is: Shutdown the VM

Makson Lee / January 9, 2026

This post shows how to upgrade a 3-node kubeadm cluster from Kubernetes v1.34.x → v1.35.0 on Ubuntu Server 24.04, where:

Makson Lee / January 7, 2026

This post shows a complete, reproducible flow: Lab context 1. Install AWS CLI v2 on Ubuntu 24.04 (x86_64) 2. Create

Makson Lee / January 6, 2026

Prerequisites Before you start, your Ubuntu 24.04 host should already have: If you haven’t set these up yet, follow this

Makson Lee / December 31, 2025

Metrics Server collects CPU / memory usage from each node’s Kubelet and exposes it via the Kubernetes Metrics API. This

Makson Lee / December 30, 2025

If you run Metrics Server (or anything that connects to the Kubelet HTTPS endpoint on 10250), you may see TLS

Makson Lee / December 30, 2025

This post shows how to deploy the official Zabbix Kubernetes Helm chart into your cluster, run a Zabbix Proxy inside

Makson Lee / December 29, 2025

crane (from Google’s go-containerregistry) is a CLI that talks to container registries directly. It’s great when you want to list

Makson Lee / December 22, 2025

This post shows how I deploy Argo CD v3.2.2 into my bare-metal kubeadm Kubernetes cluster, expose it through Traefik at: