kubernetes - K8S - API

* $`kubectl` proxy --port=8080
* http://localhost:8080/
* http://localhost:8080/api/v1/namespaces/default/services/XX

FORTIO - TEST STRESS & AUTO SCALE

• kubectl run -it fortio --rm --image=fortio/fortio -- load -qps 800 -t 120s -c 70 "http://goserver-service/healthz"
• kubectl get hpa
• watch -n1 kubectl get pods
• port default -> 80

Terminal Commands

• $ kubectl api-resources (list recurses)
• $ kind create cluster --config=configs/king.yaml --name=clusterXXX
• $ kubectl cluster-info --context kind-clusterXXX
• $ kubectl get nodes, pods, replicaset, deployment, services, hpa, pvc, ns, serviceaccounts,
• $ kubectl config get-clusters, view, current-context, use-context
• $ kubectl config use-context=kind-clusterXXX
• $ kubectl apply -f configs/XX.yaml (pod.yaml, replicaset.yaml, deployment.yaml, service.yaml, metrics.yaml, hpa.yaml)
• $ kubectl apply -f configs/XX.yaml -n=homolog (namespace)
• $ kubectl port-forward pod/goserver 7000:8000
• $ kubectl delete pod XX
• $ kubectl delete replicaset ???
• $ kubectl describe pod ??name??
• $ kubectl describe deployment goserver
• $ kubectl rollout history deployment goserver (revisions) -roolback version
• $ kubectl rollout undo deployment goserver (LastVersion) -roolback version
• $ kubectl rollout undo deployment goserver --to-resision=??code revision?? -roolback version
• $ kubectl port-forward svc/goserver-service 7000:8000
• $ kubectl top pod XXX
• $ kubectl create ns homolog
• $ kubectl exec -it #PODNAME# -- bash

Certicate manager

Configuring TLS in the application, see the documentation here

• https://cert-manager.io/docs/installation/kubectl/

- kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml

kubectl pods -n cert-manager

screen terminal commands