전체 글

안씀/LTE & 5G

IP QoS / DSCP

qci-qos-mapping pgw_qos_mapping qci 1 uplink user-datagram dscp-marking 0x10 encaps-header dscp-marking 0x12 downlink user-datagram dscp-marking 0x14 encaps-header dscp-marking 0x16 qci 2 uplink user-datagram dscp-marking 0x18 encaps-header dscp-marking 0x1a downlink user-datagram dscp-marking 0x1c encaps-header dscp-marking 0x1e qci 5 uplink user-datagram dscp-marking 0x20 encaps-header dscp-ma..

System Engineering/Kubernetes

8. K8s AutoScaling

1. AutoScaling HPA (Horizontal Pod Autoscaler) RC / RS / Deploymen를 통해 실행되는 Pod의 Scaling이다. 설정된 주기(Default 30초)마다 CPU 사용률등의 Metric을 모니터링하며, DaemonSet에는 적용되지 않는다. apiVersion: autoscaling/v2alpha1 kind: HorizontalPodAutoscaler metadata: name: hpa-ex namespace: default spec: scaleTargetRef: apiVersion: apps/v1beta1 kind: Deployment name: hpa-ex minReplicas: 3 maxRelpicas: 9 metircs: - type: Resourc..

System Engineering/Kubernetes

7. K8s Resource / Scheduling

1. Resource Management - Pod를 배포할 때 CPU / Memory / Network Bandwidth(Not supported yet)를 어떻게 할당할지 결정 - Memory는 MegaByte, CPU는 millisecond의 단위 사용 (1,000ms = 1vCore) - limits는 Pod의 Max Resource, requests는 Min Resource이다 apiVersion: v1 kind: Pod metadata: name: frontend spec: containers: - name: db image: mysql resources: requests: memory: "64Mi" cpu: "250m" limits: memory: "128Mi" cpu: "500m" - na..

System Engineering/Kubernetes

6. K8s Volume

1. Volume의 특징 - Pod가 생성되거나 삭제될때 Volume도 함께 생성/삭제 - Volume의 Life cylce은Pod에서 관리 - 동일 Pod의 컨테이너끼리 Volume 공유 apiVersion: v1 kind: Pod metadata: name: pv-recycler- namespace: default spec: restartPolicy: Never volumes: - name: vol hostPath: path: /tmp/path/ containers: - name: pv-recycler image: "gcr.io/... command: ... volumeMounts: - name: vol mountPath: /scrub 2. Volume의 종류 - Local Disk 1) emptyD..

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