Bash install / setup scripts for an Ubuntu-based development environment, with a focus on Kubernetes and container tooling. Each script targets a single tool or step and is safe to re-run.

All scripts assume Ubuntu and bail out otherwise.

• upgrade-ubuntu.sh — apt update && upgrade && autoremove
• install-net-tools.sh — net-tools, iproute2, iputils-ping
• install-nfs-client.sh — nfs-common, cifs-utils

GUI / desktop bits for headless or minimal installs.

• install-ubuntu-desktop.sh, install-xrdp.sh, install-chrome.sh, install-hangul.sh

Hypervisors and Vagrant.

• install-virtualbox.sh, install-vagrant.sh, install-kvm.sh, install-vagrant-libvirt.sh

Toolchains.

• install-gcc.sh, install-java.sh, install-golang.sh, install-rust.sh

Container runtimes.

• install-docker.sh — Docker CE + compose / buildx plugins (use docker compose ...)
• install-containerd.sh — containerd with SystemdCgroup = true

Cluster installers and add-ons.

Cluster installers (pick one):

• install-minikube.sh — single-node, requires a hypervisor
• install-microk8s.sh — snap-based
• install-k3s.sh — lightweight, ships with flannel
• install-kubeadm.sh — production-style; pairs with initialize-kubeadm.sh and deploy-cni.sh

kubeadm flow:

# install (latest stable, or pin a version)
./install-kubeadm.sh
VERSION=1.33 ./install-kubeadm.sh            # latest patch of 1.33
VERSION=1.33.0 ./install-kubeadm.sh          # specific patch

# bring up the control plane (single-node by default)
./initialize-kubeadm.sh
MULTI=true ./initialize-kubeadm.sh           # keep the control-plane taint

# deploy a CNI
CNI=cilium ./deploy-cni.sh                   # flannel | calico | cilium

Helpers:

• enable-bridge-nf-call-iptables.sh — fix for worker nodes failing kubeadm join
• install-helm.sh, install-kubebuilder.sh, install-cilium-cli.sh

Add-ons (each in its own directory):

• metrics-server/ — kubectl top support
• metallb/ — bare-metal LoadBalancer
• istio/ — service mesh (download, install, namespace injection toggles)
• cilium-hubble/ — observability for Cilium
• tetragon/ — eBPF runtime security