Answer: See the solution below.
Explanation:
kubect1 get pods-sort-by=.metadata.creationTimestamp

Answer: See the solution below.
Explanation:
kubectl create namespace development
kubectl run nginx -image=nginx -restart=Never -n development

Answer: See the solution below.
Explanation:
kubect1 get po nginx-dev -o
jsonpath='{.spec.containers[].image}{"\n"}'

Answer: See the solution below.
Solution:

#backup
ETCDCTL_API=3 etcdctl -endpoints="https://127.0.0.1:2379" -
cacert=/opt/KUIN000601/ca.crt -cert=/opt/KUIN000601/etcd-client.crt -
key=/opt/KUIN000601/etcd-client.key snapshot save /etc/data/etcd-snapshot.db
#restore
ETCDCTL_API=3 etcdctl -endpoints="https://127.0.0.1:2379" -
cacert=/opt/KUIN000601/ca.crt -cert=/opt/KUIN000601/etcd-client.crt -
key=/opt/KUIN000601/etcd-client.key snapshot restore /var/lib/backup/etcd-snapshotprevioys.
db

Answer: See the solution below.
Solution:
Task should be complete on node k8s -1 master, 2 worker for this connect use command
[student@node-1] > ssh k8s
kubectl create clusterrole deployment-clusterrole -verb=create -
resource=deployments,statefulsets,daemonsets
kubectl create serviceaccount cicd-token -namespace=app-team1
kubectl create rolebinding deployment-clusterrole -clusterrole=deployment-clusterrole -
serviceaccount=default:cicd-token -namespace=app-team1

Answer: See the solution below.
Explanation:
kubectl run nginx -image=nginx -restart=Never -labels=env=test -
namespace=engineering -dry-run -o yaml > nginx-pod.yaml
kubectl run nginx -image=nginx -restart=Never -labels=env=test -
namespace=engineering -dry-run -o yaml | kubectl create -nengineering-f –
YAML File:
apiVersion: v1
kind: Pod
metadata:
name: nginx
namespace: engineering
labels:
env: test
spec:
containers:
- name: nginx
image: nginx
imagePullPolicy: IfNotPresent
restartPolicy: Never
kubectl create -f nginx-pod.yaml