18. 오라클 클라우드-쿠버네티스-오토스케일링
<1> 오토 스케일링 3가지
<2> 부하 테스트 환경 만들기
<1> 오토 스케일링 3가지
1
HPA - 서버수를 늘리는 것 , Scale-Out
(Horizontal Pod Autoscaling)
2
VPA - 서버 사용을 높이는것, 스케일 업. Scale-UP
(Vertical Pod Autoscaling)
3
CA는 Node 수를 늘리는것
Cluster Autocaler
CA 는 클라우드 사업자가 제공해야 한다.
node 수 자체를 늘려준다.
<2> 부하 테스트 환경 만들기
1
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl get ns,no,po,svc,deploy,rs,ing,ep -o wide
NAME STATUS AGE
namespace/default Active 8d
namespace/hello Active 41h
namespace/kube-node-lease Active 8d
namespace/kube-public Active 8d
namespace/kube-system Active 8d
NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME
node/10.0.10.141 Ready node 8d v1.25.4 10.0.10.141 <none> Oracle Linux Server 8.6 5.4.17-2136.314.6.2.el8uek.x86_64 cri-o://1.25.1-111.el8
node/10.0.10.80 Ready node 8d v1.25.4 10.0.10.80 <none> Oracle Linux Server 8.6 5.4.17-2136.314.6.2.el8uek.x86_64 cri-o://1.25.1-111.el8
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 25h <none>
NAME ENDPOINTS AGE
endpoints/oracle.com-oci <none> 41h
2
topasvga@cloudshell:~ (ap-seoul-1)$ cat << EOF > php-apache.yaml
> apiVersion: apps/v1
> kind: Deployment
> metadata:
> name: php-apache
> spec:
> selector:
> matchLabels:
> run: php-apache
> replicas: 1
> template:
> metadata:
> labels:
> run: php-apache
> spec:
> containers:
> - name: php-apache
> image: k8s.gcr.io/hpa-example
> ports:
> - containerPort: 80
> resources:
> limits:
> cpu: 500m
> requests:
> cpu: 200m
> ---
> apiVersion: v1
> kind: Service
> metadata:
> name: php-apache
> labels:
> run: php-apache
> spec:
> ports:
> - port: 80
> selector:
> run: php-apache
> EOF
3
디플로이먼트와 서비스가 생긴다
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl apply -f php-apache.yaml
deployment.apps/php-apache created
service/php-apache created
4
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl get ns,no,po,svc,deploy,rs,ing,ep -o wide
top - 02:18:01 up 8 days, 15:40, 0 users, load average: 0.10, 0.14, 0.11
Tasks: 8 total, 1 running, 7 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.7 us, 1.0 sy, 0.0 ni, 98.2 id, 0.0 wa, 0.0 hi, 0.0 si, 0.2 st
KiB Mem: 16090880 total, 10555076 used, 5535804 free, 3296 buffers
KiB Swap: 0 total, 0 used, 0 free. 8614060 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 20 0 166264 19084 13812 S 0.0 0.1 0:00.07 apache2 7 www-data 20 0 166288 7116 1832 S 0.0 0.0 0:00.00 apache2 8 www-data 20 0 166288 7116 1832 S 0.0 0.0 0:00.00 apache2 9 www-data 20 0 166288 7116 1832 S 0.0 0.0 0:00.00 apache2 10 www-data 20 0 166288 7116 1832 S 0.0 0.0 0:00.00 apache2 11 www-data 20 0 166288 7116 1832 S 0.0 0.0 0:00.00 apache2 12 root 20 0 20244 3116 2820 S 0.0 0.0 0:00.00 bash 17 root 20 0 21940 2464 2100 R 0.0 0.0 0:00.00 top
5
root@php-apache-6766b988d9-b7c4v:/var/www/html# exit
exit
command terminated with exit code 127
6
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 25h
php-apache ClusterIP 10.96.113.238 <none> 80/TCP 7m2s
topasvga@cloudshell:~ (ap-seoul-1)$ SVCIP=10.96.113.238
topasvga@cloudshell:~ (ap-seoul-1)$ curl $SVCIP;echo
oracle cloudshell 환경에서는 clusterip 로 접속이 안됨.
별도 서버에서 테스트 필요함.
아래 내용 참고해 테스트 바랍니다.
https://brunch.co.kr/@topasvga/1728
감사합니다.
