[인프런 워밍업 클럽 4기 - DevOps] 미션 4
PV, PVC1번 API 파일 생성[root@k8s-master ~] curl http://192.168.56.30:31231/create-file-pod hrgosbpjox.txt [root@k8s-master ~] curl http://192.168.56.30:31231/create-file-pv xprrmxjsna.txt2번 Container 임시 폴더 확인[root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-66c489cbb8-5krzn -- ls /usr/src/myapp/tmp hrgosbpjox.txt [root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-66c489cbb8-5krzn -- ls /usr/src/myapp/files/dev xprrmxjsna.txt [root@k8s-master ~] ls /root/k8s-local-volume/1231/ xprrmxjsna.txt2번 master node 폴더 확인[root@k8s-master ~] ls /root/k8s-local-volume/1231/ xprrmxjsna.txtpod 삭제[root@k8s-master ~] k delete -n anotherclass-123 pod api-tester-1231-66c489cbb8-5krzn pod "api-tester-1231-66c489cbb8-5krzn" deleted4번 API - 파일 조회[root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-66c489cbb8-9kpxd -- curl localhost:8080/list-file-pod [root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-66c489cbb8-9kpxd -- curl localhost:8080/list-file-pv xafgvinxxz.txt thschtbuoo.txt pablwvxlec.txt pogdzjqhqs.txt xprrmxjsna.txt 5. hostPath 동작 확인 - Deployment 수정 후 [1~4] 실행apiVersion: apps/v1 kind: Deployment metadata: namespace: anotherclass-123 name: api-tester-1231 spec: template: spec: nodeSelector: kubernetes.io/hostname: k8s-master containers: - name: api-tester-1231 volumeMounts: - name: files mountPath: /usr/src/myapp/files/dev - name: secret-datasource mountPath: /usr/src/myapp/datasource volumes: - name: files persistentVolumeClaim: // 삭제 claimName: api-tester-1231-files // 삭제 // 아래 hostPath 추가 hostPath: path: /root/k8s-local-volume/1231 - name: secret-datasource secret: secretName: api-tester-1231-postgresql[1~4 반복]API - 파일 생성 [root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-66c489cbb8-9kpxd -- curl localhost:8080/list-file-pod [root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-66c489cbb8-9kpxd -- curl localhost:8080/list-file-pv xafgvinxxz.txt thschtbuoo.txt pablwvxlec.txt pogdzjqhqs.txt xprrmxjsna.txt Container 임시 폴더 확인 root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-6cf7495fcd-7gtwq -- ls /usr/src/myapp/tmp yrwjythrtf.txt Container 영구저장 폴더 확인 [root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-6cf7495fcd-7gtwq -- ls /usr/src/myapp/files/dev lbjgryyqvl.txt pogdzjqhqs.txt xafgvinxxz.txt pablwvxlec.txt thschtbuoo.txt xprrmxjsna.txt Master node 폴더 확인 [root@k8s-master ~] ls /root/k8s-local-volume/1231 lbjgryyqvl.txt pablwvxlec.txt pogdzjqhqs.txt thschtbuoo.txt xafgvinxxz.txt xprrmxjsna.txt API - 파일 조회 root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-6cf7495fcd-7gtwq -- curl localhost:8080/list-file-pod yrwjythrtf.txt [root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-6cf7495fcd-7gtwq -- curl localhost:8080/list-file-pv lbjgryyqvl.txt xafgvinxxz.txt thschtbuoo.txt pablwvxlec.txt pogdzjqhqs.txt xprrmxjsna.txt RollingUpdate 하기HPA minReplica 2로 바꾸기 [root@k8s-master ~] k patch -n anotherclass-123 hpa api-tester-1231-default -p '{"spec":{"minReplicas":2}}' horizontalpodautoscaler.autoscaling/api-tester-1231-default patched 그외 Deployment scale 명령 [root@k8s-master ~] k scale -n anotherclass-123 deployment api-tester-1231 --replicas=2 deployment.apps/api-tester-1231 scaled edit로 모드로 직접 수정 kubectl edit -n anotherclass-123 deployment api-tester-1231 지속적으로 Version호출 하기 while : do curl http://192.168.56.30:31231/version sleep 2 echo '' done 3) 별도의 원격 콘솔창을 열어서 업데이트 실행 kubectl set image -n anotherclass-123 deployment/api-tester-1231 api-tester-1231=1pro/api-tester:v2.0.0 kubectl set image -n anotherclass-123 deployment/api-tester-1231RollingUpdate (maxUnavailable: 0%, maxSurge: 100%) 하기strategy: type: RollingUpdate rollingUpdate: maxUnavailable: 0% maxSurge: 100% kubectl set image -n anotherclass-123 deployment/api-tester-1231 api-tester-1231=1pro/api-tester:v1.0.0 Recreate 하기 strategy: type: Recreate [root@k8s-master ~] kubectl set image -n anotherclass-123 deployment/api-tester-1231 api-tester-1231=1pro/api-tester:v2.0.0 deployment.apps/api-tester-1231 image updated Rollback[root@k8s-master ~] kubectl rollout undo -n anotherclass-123 deployment/api-tester-1231 deployment.apps/api-tester-1231 rolled back ServicePod 내부에서 Service 명으로 API 호출[root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-6cf7495fcd-88cqq -- curl http://api-tester-1231:80/version [App Version] : Api Tester v1.0.0 Deployment에서 Pod의 ports 전체 삭제, Service targetPort를 http -> 8080으로 수정apiVersion: apps/v1 kind: Deployment metadata: namespace: anotherclass-123 name: api-tester-1231 spec: template: spec: nodeSelector: kubernetes.io/hostname: k8s-master containers: - name: api-tester-1231 ports: // 삭제 - name: http // 삭제 containerPort: 8080 // 삭제 --- apiVersion: v1 kind: Service metadata: namespace: anotherclass-123 name: api-tester-1231 spec: ports: - port: 80 targetPort: http -> 8080 // 변경 nodePort: 31231 type: NodePort [root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-6cf7495fcd-88cqq -- curl http://api-tester-1231:80/version [App Version] : Api Tester v1.0.0 HPA[root@k8s-master ~] k top -n anotherclass-123 pods NAME CPU(cores) MEMORY(bytes) api-tester-1231-6cf7495fcd-88cqq 1m 140Mi [root@k8s-master ~] k top -n anotherclass-123 pods NAME CPU(cores) MEMORY(bytes) api-tester-1231-6cf7495fcd-88cqq 104m 161Mi [root@k8s-master ~]# k get hpa -n anotherclass-123 NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE api-tester-1231-default Deployment/api-tester-1231 56%/60% 2 4 2 3d8h [behavior] 미사용으로 적용spec: # behavior: # scaleDown: # policies: # - periodSeconds: 15 # type: Percent # value: 100 # selectPolicy: Max # scaleUp: # policies: # - periodSeconds: 15 # type: Pods # value: 4 # - periodSeconds: 15 # type: Percent # value: 100 # selectPolicy: Max # stabilizationWindowSeconds: 120 [root@k8s-master ~] kubectl edit -n anotherclass-123 hpa api-tester-1231-default horizontalpodautoscaler.autoscaling/api-tester-1231-default edited부하 발생 API[root@k8s-master ~] k exec -n anotherclass-123 -it api-tester-1231-6cf7495fcd-88cqq -- curl http://192.168.56.30:31231/cpu-load[root@k8s-master ~] k get hpa -n anotherclass-123 NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE api-tester-1231-default Deployment/api-tester-1231 101%/60% 2 4 4 3d8h [root@k8s-master ~] k top -n anotherclass-123 pods NAME CPU(cores) MEMORY(bytes) api-tester-1231-6cf7495fcd-5b6bw 202m 157Mi api-tester-1231-6cf7495fcd-88cqq 1m 140Mi api-tester-1231-6cf7495fcd-br5d2 1m 127Mi api-tester-1231-6cf7495fcd-wzx9k 1m 127Mi
