vengalamseshu/kubernetes-administrator-certification

This is a Repo on Kubernetes Administrator Session

Install Kubectl locally

Running an App on Kubernetes

• List Nodes in K8s cluster

kubectl get nodes 

• Deploy the application defined in pod.yml

kubectl apply -f pod.yml
kubectl describe pod first-pod # get detailed info about running pod

kubectl apply -f svc-cloud.yml # Deploy the service 

kubectl get svc # Check external IP of the service

kubectl delete pod first-pod

kubectl delete svc cloud-lb

kubectl delete pods --all

kubectl apply -f deploy.yml

kubectl get deployment catgif

kubectl delete deployment catgif

kubectl delete svc cloud-lb

kubectl get pods -o wide

kubectl get pods -o yaml

kubectl describe pods first-pod

kubectl logs first-pod

kubectl logs firstpod --container first_container # incase of Multi container


kubectl exec first-pod -- ps
kubectl exec -it first-pod -- sh
apk add curl
curl localhost:5000

init pod demo

kubectl apply -f initpod.yml

kubectl get pods --watch

Short Names

Short name	Full name
csr	certificatesigningrequests
cs	componentstatuses
cm	configmaps
ds	daemonsets
deploy	deployments
ep	endpoints
ev	events
hpa	horizontalpodautoscalers
ing	ingresses
limits	limitranges
ns	namespaces
no	nodes
pvc	persistentvolumeclaims
pv	persistentvolumes
po	pods
pdb	poddisruptionbudgets
psp	podsecuritypolicies
rs	replicasets
rc	replicationcontrollers
quota	resourcequotas
sa	serviceaccounts
svc	services