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Apr 24. 2022
168. GKE 리소스 제한, 쿼터제한(5/6)
<1> 쿼터 설정
<2> CPU 와 Memory Quota 설정
<1> 쿼터 설정
1
namespace=front-a에 pod 2개까지만 생성 가능하도록 제한을 걸어보자~
kubectl create quota test-quota --hard=count/pods=2,count/services.loadbalancers=1 --namespace=front-a
[topasseoseo1@instance-4 ~]$ kubectl create quota test-quota --hard=count/pods=2,count/services.loadbalancers=1 --namespace=front-a
resourcequota/test-quota created
2
pod 생성
kubectl run app-server-2 --image=centos --namespace=front-a -- sleep infinity
[topasseoseo1@instance-4 ~]$ kubectl run app-server-2 --image=centos --namespace=front-a -- sleep infinity
pod/app-server-2 created
[topasseoseo1@instance-4 ~]$ kubectl get pods
NAME READY STATUS RESTARTS AGE
app-server 1/1 Running 0 30m
app-server-2 1/1 Running 0 17s
3
추가 pod 생성 ?
안된다.
제한을 2개로 설정해 놓아서~~
kubectl run app-server-3 --image=centos --namespace=front-a -- sleep infinity
[topasseoseo1@instance-4 ~]$ kubectl run app-server-3 --image=centos --namespace=front-a -- sleep infinity
Error from server (Forbidden): pods "app-server-3" is forbidden: exceeded quota: test-quota, requested: count/pods=1, used: count/pods=2, limited: count/pods=2
4
쿼터수 확인 ?
kubectl describe quota test-quota --namespace=front-a
[topasseoseo1@instance-4 ~]$ kubectl describe quota test-quota --namespace=front-a
Name: test-quota
Namespace: front-a
Resource Used Hard
-------- ---- ----
count/pods 2 2
count/services.loadbalancers 0 1
5
2개에서 22개로 쿼터를 변경해 보자~
sudo yum install nano -y
export KUBE_EDITOR="nano"
kubectl edit quota test-quota --namespace=front-a
편집
ctrl + x
y
<엔터>
6
쿼터수 확인
kubectl describe quota test-quota --namespace=front-a
[topasseoseo1@instance-4 ~]$ kubectl describe quota test-quota --namespace=front-a
Name: test-quota
Namespace: front-a
Resource Used Hard
-------- ---- ----
count/pods 2 22
count/services.loadbalancers 0 1
<2> CPU 와 Memory Quota 설정
1
cat << EOF > cpu-mem-quota.yaml
apiVersion: v1
kind: ResourceQuota
metadata:
name: cpu-mem-quota
namespace: front-a
spec:
hard:
limits.cpu: "4"
limits.memory: "12Gi"
requests.cpu: "2"
requests.memory: "8Gi"
EOF
kubectl create -f cpu-mem-quota.yaml
[topasseoseo1@instance-4 ~]$ kubectl create -f cpu-mem-quota.yaml
resourcequota/cpu-mem-quota created
[topasseoseo1@instance-4 ~]$ kubectl get pods
NAME READY STATUS RESTARTS AGE
app-server 1/1 Running 0 42m
app-server-2 1/1 Running 0 13m
2
cat << EOF > cpu-mem-demo-pod.yaml
apiVersion: v1
kind: Pod
metadata:
name: cpu-mem-demo
namespace: front-a
spec:
containers:
- name: cpu-mem-demo-ctr
image: nginx
resources:
requests:
cpu: "100m"
memory: "128Mi"
limits:
cpu: "400m"
memory: "512Mi"
EOF
kubectl create -f cpu-mem-demo-pod.yaml --namespace=front-a
[topasseoseo1@instance-4 ~]$ kubectl get pods
NAME READY STATUS RESTARTS AGE
app-server 1/1 Running 0 49m
app-server-2 1/1 Running 0 20m
cpu-mem-demo 1/1 Running 0 15s
3
kind: ResourceQuota 의 cpu-mem-quota 라는 쿼터 이름이다.
kubectl describe quota cpu-mem-quota --namespace=front-a
[topasseoseo1@instance-4 ~]$ kubectl describe quota cpu-mem-quota --namespace=front-a
Name: cpu-mem-quota
Namespace: front-a
Resource Used Hard
-------- ---- ----
limits.cpu 400m 4
limits.memory 512Mi 12Gi
requests.cpu 100m 2
requests.memory 128Mi 8Gi
4
다음자료
https://brunch.co.kr/@topasvga/2382
5
같이 볼만한 자료
https://brunch.co.kr/@topasvga/1727
https://brunch.co.kr/@topasvga/1835
https://brunch.co.kr/@topasvga/2383
다음과정
https://brunch.co.kr/@topasvga/2382
