Developing on Kubernetes

Where to run your clusters ?

Minikube

minikube start --driver docker

minikube status

docker ps

Point Docker to the daemon inside minikube

docker images

eval $(minikube docker-env)

docker images

docker build -t hello-app hello-app/

docker images

kubectl run hello-app --image hello-app --image-pull-policy=Never

Kind

unset DOCKER_TLS_VERIFY unset DOCKER_HOST unset DOCKER_CERT_PATH unset MINIKUBE_ACTIVE_DOCKERD

kind create cluster --name local-cluster

docker ps

kubectl get nodes

kubectl run nginx --image nginx

kubectl apply -f metalLB/LB.yaml

kubectl get pods -n metallb-system

k3d

k3d cluster create --config k3d-config.yaml --registry-create mycluster-registry:0.0.0.0:5432

docker ps

Add a new node

k3d node create k3d-local-cluster-agent-2 --role agent --cluster local-cluster

Skaffold

cd leeroy

skaffold dev --default-repo k3d-mycluster-registry.localhost:5432

k3d cluster delete local-cluster

New kube Version

kubectl version

k3d cluster create --config k3d-config-1.27.yaml --registry-create 127-mycluster-registry:0.0.0.0:5433

kubectl version -->

Deply to new version

kubectx

skaffold dev --default-repo k3d-127-mycluster-registry.localhost:5433

Cleanup

docker network prune cd ..

Ingress

k3d cluster create --api-port 6550 -p "8081:80@loadbalancer" --agents 2

kubectl apply -f Ingress/apps.yaml kubectl apply -f Ingress/ingress.yaml

kubectl get ing curl --header "Host: devnexus.com" http://192.168.8.2/foo curl --header "Host: devnexus.com" http://192.168.8.2/bar

Telepresence

gcloud container clusters get-credentials cosign-demo --zone europe-north1-a --project boredabdel-lab kubectx cosign-cluster=gke_boredabdel-lab_europe-north1-a_cosign-demo kubectx cosign-cluster kubectl apply -f telepresence/deployment.yaml telepresence connect curl http://whereami.default:8080 curl http://details.default:9080

docker run -p 0.0.0.0:80:80 nginx telepresence intercept whereami --port 80:8080 --env-file whereami.env telepresence leave whereami