kubernetes's Introduction

kubernetes

Atividade - Matéria: Infrastructure and Cloud Computing - Turma: MBA FULL_02 FSD02

Subir dois pods, nginx e mysql, mapeando a porta 80 do nginx para acesso externo ao cluster e permitir que o contêiner do nginx tenha comunicação de rede no contêiner mysql pela porta 3306. A atividade pode ser feita localmente (minikube), AKS (Azure), EKS (AWS) ou no GKE (GCP). Se quiser criar o cluster nuvem Kubernetes com Terraform é opcional.

Comandos

PODS

$ kubectl get nodes -> list nodes

$ kubectl run ngpod --image=nginx:latest -> run pod

$ kubectl get pods -> list pods

$ kubectl get pods –watch -> list pods

$ kubectl exec –it ngpod – sh -> access pod

$ kubectl apply –f primeiro-pod.yaml -> exec file

$ kubectl delete pod [name] -> del pod

$ kubectl delete –f primeiro-pod.yaml -> del file

$ kubectl run -it --image=ubuntu – bash -> run and exec

$ kubectl top pod -> show cpu mem pods (metrics.server)

LOGS

$ kubectl get events -> node events

$ kubectl get events -n aulainfra -> nm events

$ kubectl describe pod/mysql -n aulainfra -> details pod

$ kubectl describe service/app -n aulainfra -> details pod

$ kubectl logs mysqldb-0 -n aulainfra -> pod logs

DEPLOYMENT

$ kubectl get deployments

$ kubectl rollout history deployment deployment-01

$ kubectl apply –f [FOLDER/FILE] –record

$ kubectl annotate deployment deployment-01 kubernetes.io/change-cause=“texto“

$ kubectl rollout undo deployment deployment-01 --to-revision=1

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