KEDA

Overview

Install KEDA

Deploying KEDA with Helm.

helm repo add kedacore https://kedacore.github.io/charts
helm repo update
helm install keda kedacore/keda --namespace keda --create-namespace

Create deployment

apiVersion: apps/v1

kind: Deployment metadata:

name: nginx-deployment

spec:

replicas: 1 selector:

matchLabels:

app: nginx

template:

metadata:

labels:

app: nginx

spec:

containers: - name: nginx

image: nginx:latest ports: - containerPort: 80 resources:

limits:

cpu: “0.02” # ??CPU???0.5? memory: “5Mi” # ???????256Mi

requests:

cpu: “0.01” # ??CPU???0.2? memory: “2Mi” # ???????128Mi

— apiVersion: v1 kind: Service metadata:

name: nginx-service

spec:

selector:

app: nginx

ports:

• protocol: TCP port: 80 targetPort: 80

type: NodePort

Create ScaledObject

apiVersion: keda.sh/v1alpha1

kind: ScaledObject metadata:

name: nginx-mem-scaler

spec:

advanced:

horizontalPodAutoscalerConfig:

behavior:

scaleDown:

policies: - type: Pods

value: 1 periodSeconds: 10

stabilizationWindowSeconds: 0

scaleTargetRef:

name: nginx-deployment

triggers:

• type: cron metadata:

  timezone: Asia/Shanghai start: 55 13 * * * end: 20 14 * * * desiredReplicas: “6”

• type: cron metadata:

  timezone: Asia/Shanghai start: 30 14 * * * end: 45 14 * * * desiredReplicas: “3”

• type: cpu metadata: # Required

  type: Utilization # Allowed types are ‘Utilization’ or ‘AverageValue’ value: “10”

minReplicaCount: 1 # ????? maxReplicaCount: 10 # ?????