Exercise 7.4: Working with DaemonSets

1. CP 노드에 연결된 터미널로 이동

2. DaemonSet 생성

   cat <<EOF | kubectl create -f -
   apiVersion: apps/v1
   kind: DaemonSet
   metadata:
     name: ds-one
     labels:
       system: DaemonSetOne
   spec:
     selector:
       matchLabels:
         system: DaemonSetOne
     template:
       metadata:
         labels:
           system: DaemonSetOne
       spec:
         containers:
         - name: nginx
           image: nginx:1.15.1
           ports:
           - containerPort: 80
   EOF

3. DaemonSet 및 Pod 확인

   kubectl get ds,pod -l system=DaemonSetOne -o wide

4. 생성된 Pod의 컨테이너 이미지 확인

   kubectl get pod -l system=DaemonSetOne \
   -o=custom-columns=NAME:.metadata.name,IMAGE:.spec.containers[*].image