[10] Node 정보 수집

❓Check Ready Nodes

Check to see how many nodes are ready (not including nodes tainted NoSchedule) and write the number to /var/CKA2022/RN0001

not including nodes tainted NoSchedule —> tainted에 NoSchedule 적혀있는건 제외

실습

# ready 단어와 일치하는 것만 결과 출력

[user@console ~]$ kubectl get nodes | grep -i -w ready

hk8s-m Ready

hk8s-w1 Ready

[user@console ~]$ kubectl describe node hk8s-m | grep -i NoSchedule

[user@console ~]$ kubectl describe node hk8s-w1 | grep -i NoSchedule

hk8s-m 노드에는 NoSchedule 정보가 포함되어 있음

# 결과값 파일에 저장

[user@console ~]$ echo "1" > /var/CKA2022/RN0001

[user@console ~]$ cat /var/CKA2022/RN0001

1

❓Count the number of nodes that are ready to run normal workloads

Determine how many nodes in the cluster are ready to run normal workloads (i.e workloads that do not have any special tolerations)

Output this number to the file /var/CKA2022/NODE-Count

실습

# ready 상태인 노드 출력

[user@console ~]$ kubectl get nodes | grep -i -w ready

[user@console ~]$ kubectl get nodes | grep -i -w ready | wc -l

2

[user@console ~]$ kubectl get nodes | grep -i -w ready | wc -l > /var/CKA2022/NODE-Count

[user@console ~]$ cat /var/CKA2022/NODE-Count

2