first commit

autoscaling/components/application/app.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func main(){	
+	http.HandleFunc("/", useCPU)
+	http.ListenAndServe(":80", nil)
+}
+
+func useCPU(w http.ResponseWriter, r *http.Request) {
+	count := 1
+
+	for i := 1; i <= 1000000; i++ {
+		count = i
+	}
+
+	fmt.Printf("count: %d", count)
+	w.Write([]byte(string(count)))
+}

autoscaling/components/application/deployment.yaml

@@ -0,0 +1,50 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: application-cpu
+  labels:
+    app: application-cpu
+spec:
+  type: ClusterIP
+  selector:
+    app: application-cpu
+  ports:
+    - protocol: TCP
+      name: http
+      port: 80
+      targetPort: 80
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: application-cpu
+  labels:
+    app: application-cpu
+spec:
+  selector:
+    matchLabels:
+      app: application-cpu
+  replicas: 1
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxSurge: 1
+      maxUnavailable: 0
+  template:
+    metadata:
+      labels:
+        app: application-cpu
+    spec:
+      containers:
+      - name: application-cpu
+        image: aimvector/application-cpu:v1.0.2
+        imagePullPolicy: Always
+        ports:
+        - containerPort: 80
+        resources:
+          requests:
+            memory: "50Mi"
+            cpu: "500m"
+          limits:
+            memory: "500Mi"
+            cpu: "2000m"

autoscaling/components/application/dockerfile

@@ -0,0 +1,15 @@
+FROM golang:1.14-alpine as build
+
+RUN apk add --no-cache git curl
+
+WORKDIR /src 
+
+COPY app.go /src 
+
+RUN go build app.go
+
+FROM alpine as runtime
+
+COPY --from=build /src/app /app/app
+
+CMD [ "/app/app" ]

autoscaling/components/application/traffic-generator.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: traffic-generator
+spec:
+  containers:
+  - name: alpine
+    image: alpine
+    args:
+    - sleep
+    - "100000000"

autoscaling/components/metric-server/components.yaml

@@ -0,0 +1,202 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  labels:
+    k8s-app: metrics-server
+  name: metrics-server
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    k8s-app: metrics-server
+    rbac.authorization.k8s.io/aggregate-to-admin: "true"
+    rbac.authorization.k8s.io/aggregate-to-edit: "true"
+    rbac.authorization.k8s.io/aggregate-to-view: "true"
+  name: system:aggregated-metrics-reader
+rules:
+- apiGroups:
+  - metrics.k8s.io
+  resources:
+  - pods
+  - nodes
+  verbs:
+  - get
+  - list
+  - watch
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    k8s-app: metrics-server
+  name: system:metrics-server
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - nodes/metrics
+  verbs:
+  - get
+- apiGroups:
+  - ""
+  resources:
+  - pods
+  - nodes
+  verbs:
+  - get
+  - list
+  - watch
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  labels:
+    k8s-app: metrics-server
+  name: metrics-server-auth-reader
+  namespace: kube-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: extension-apiserver-authentication-reader
+subjects:
+- kind: ServiceAccount
+  name: metrics-server
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    k8s-app: metrics-server
+  name: metrics-server:system:auth-delegator
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:auth-delegator
+subjects:
+- kind: ServiceAccount
+  name: metrics-server
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    k8s-app: metrics-server
+  name: system:metrics-server
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: system:metrics-server
+subjects:
+- kind: ServiceAccount
+  name: metrics-server
+  namespace: kube-system
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    k8s-app: metrics-server
+  name: metrics-server
+  namespace: kube-system
+spec:
+  ports:
+  - name: https
+    port: 443
+    protocol: TCP
+    targetPort: https
+  selector:
+    k8s-app: metrics-server
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    k8s-app: metrics-server
+  name: metrics-server
+  namespace: kube-system
+spec:
+  selector:
+    matchLabels:
+      k8s-app: metrics-server
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+  template:
+    metadata:
+      labels:
+        k8s-app: metrics-server
+    spec:
+      containers:
+      - args:
+        - --cert-dir=/tmp
+        - --secure-port=10250
+        - --kubelet-insecure-tls #remove these for production: only used for kind
+        - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
+        - --kubelet-use-node-status-port
+        - --metric-resolution=15s
+        image: registry.k8s.io/metrics-server/metrics-server:v0.7.2
+        imagePullPolicy: IfNotPresent
+        livenessProbe:
+          failureThreshold: 3
+          httpGet:
+            path: /livez
+            port: https
+            scheme: HTTPS
+          periodSeconds: 10
+        name: metrics-server
+        ports:
+        - containerPort: 10250
+          name: https
+          protocol: TCP
+        readinessProbe:
+          failureThreshold: 3
+          httpGet:
+            path: /readyz
+            port: https
+            scheme: HTTPS
+          initialDelaySeconds: 20
+          periodSeconds: 10
+        resources:
+          requests:
+            cpu: 100m
+            memory: 200Mi
+        securityContext:
+          allowPrivilegeEscalation: false
+          capabilities:
+            drop:
+            - ALL
+          readOnlyRootFilesystem: true
+          runAsNonRoot: true
+          runAsUser: 1000
+          seccompProfile:
+            type: RuntimeDefault
+        volumeMounts:
+        - mountPath: /tmp
+          name: tmp-dir
+      nodeSelector:
+        kubernetes.io/os: linux
+      priorityClassName: system-cluster-critical
+      serviceAccountName: metrics-server
+      volumes:
+      - emptyDir: {}
+        name: tmp-dir
+---
+apiVersion: apiregistration.k8s.io/v1
+kind: APIService
+metadata:
+  labels:
+    k8s-app: metrics-server
+  name: v1beta1.metrics.k8s.io
+spec:
+  group: metrics.k8s.io
+  groupPriorityMinimum: 100
+  insecureSkipTLSVerify: true
+  service:
+    name: metrics-server
+    namespace: kube-system
+  version: v1beta1
+  versionPriority: 100