Local Development with Kubernetes ☸️

Presentation of useful tools to develop with Kubernetes locally

Local cluster

Minikube : Run Kubernetes locally on Windows, Mac or Linux.
- demo
MicroK8S : A single package of k8s that installs on 42 flavours of Linux.
Kind : A tool for running local Kubernetes clusters using Docker container “nodes”.
- demo
kubeadm-dind-cluster : A Kubernetes multi-node test cluster based on kubeadm. DEPRECATED
K3S / K3D : lightweight Kubernetes distribution by Rancher

Remote cluster

Improve K8S command line UX

kubectx+kubens : Fast way to switch between clusters and namespaces

# Tip : easy merge kube config files and switch contexts
export KUBECONFIG=~/.kube/k1_config:~/.kube/k2_config:~/.kube/k3_config
kubectx
<3 contexts>

kube-shell : An integrated shell for working with the Kubernetes CLI
kube-prompt : An interactive kubernetes client featuring auto-complete
K9S : A terminal UI to interact with your Kubernetes clusters
kube-ps1 : Kubernetes prompt info for bash and zsh
Stern : Multi pod and container log tailing
Kail : Kubernetes log viewer
KubeSpy : Tools for observing Kubernetes resources in real time

kubectl create ns gd
kubens gd

# In one shell (keep it displayed)
kubespy trace deploy gd/nginx-deployment
# In another shell
kubectl create -f https://k8s.io/examples/controllers/nginx-deployment.yaml 

# Pod
kubespy status v1 Pod gd/nginx
kubectl create -f https://github.com/pulumi/kubespy/raw/master/examples/trivial-pulumi-example/yaml/nginx.yaml

# Service
kubespy trace service  gd/nginx
kubectl create -f https://github.com/pulumi/kubespy/raw/master/examples/trivial-service-trace-example/yaml/nginx.yaml

Kubectl plugins
- Krew : Package manager for "kubectl plugins"
- Plugins index

kubectl krew {search,info,install,upgrade,remove}

Examples :
- kubectl view-utilization -h
- kubectl get-all --only-scope=namespace --namespace=default
Arkade : helps you install kubernetes application with a single install command

Development

kubefwd : Bulk port forwarding Kubernetes services for local development
Skaffolfd : Easy and Repeatable Kubernetes Development
KSync
Telepresence : Debug your Kubernetes service locally
Tilt : Manages local development instances for teams that deploy to Kubernetes
KubeSquash
Kompose (Conversion Matrix)

GUI/TUI

K8S Dashboard
Kube-ops-view : Read-only system dashboard for multiple K8s clusters
K9S
Octant
Kubernetic
k3x for k3d
Portainer : Beta version for Kubernetes
KubeNav
Lens
Okteto

Other tools

Dive

Chaos gaming tools 🕹

Costing

Kube Resource Report

kubereport () {
	mkdir -p /tmp/kubereport-output
	echo ""
	echo "----------------------------------------------------------"
	echo "Merging config files found in KUBECONFIG var..."
	echo "----------------------------------------------------------"
	echo $KUBECONFIG | sed 's/:/\n/g'
	echo ""
	echo "----------------------------------------------------------"
	kubectl config view --flatten > ~/.kube/config
	echo "Generating report..."
	echo "----------------------------------------------------------"
	docker pull hjacobs/kube-resource-report
	docker run -it --net=host -v ~/.kube/:/root/.kube/ -v /tmp/output:/output hjacobs/kube-resource-report /output
	echo ""
	echo "----------------------------------------------------------"
	echo "Opening report..."
	echo "----------------------------------------------------------"
	xdg-open /tmp/output/index.html &
}