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chore: imported knowledge from the private kb, moved examples to the correct section
This commit is contained in:
Michele Cereda
217
examples/kubernetes/keda/nextcloud.bash
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217
examples/kubernetes/keda/nextcloud.bash
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#!/usr/bin/env bash
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set -ex
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# minikube start --cpus 4 --memory 4GiB --vm
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# minikube addons enable ingress
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# minikube addons enable metrics-server
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helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
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helm repo add kedacore https://kedacore.github.io/charts
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helm repo add nextcloud https://nextcloud.github.io/helm/
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helm repo update
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helm upgrade --install --namespace monitoring --create-namespace prometheus prometheus-community/prometheus --values <(
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ingress:
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enabled: true
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hosts:
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- prometheus
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)
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helm upgrade --install --namespace scaling --create-namespace keda kedacore/keda --set prometheus.enabled=true
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helm upgrade --install --namespace nextcloud --create-namespace nextcloud nextcloud/nextcloud \
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--set ingress.enabled=true \
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--set metrics.enabled=true \
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--set nextcloud.host=nextcloud \
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--set nextcloud.password=qwerty \
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--set-string service.port=80
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kubectl patch service --namespace monitoring prometheus-server --patch '{
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"spec": {
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"type": "NodePort"
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}
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}'
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kubectl patch deployments.apps --namespace kube-system ingress-nginx-controller --patch '{
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"spec": {
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"template": {
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"metadata": {
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"annotations": {
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"prometheus.io/port": "10254",
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"prometheus.io/scrape": "true"
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}
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}
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}
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}
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}'
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# minikube service --namespace monitoring prometheus-server
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# kubectl patch service --namespace monitoring grafana --patch '{
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# "spec": {
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# "type": "NodePort"
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# }
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# }'
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# curl "$(minikube service --namespace monitoring grafana --url)/api/datasources" --request POST --user admin:qwerty --header "Content-Type: application/json" --data '{
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# "name": "Prometheus",
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# "type": "prometheus",
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# "access": "proxy",
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# "url": "http://prometheus-server"
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# }'
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# echo "$(minikube ip) nextcloud" | sudo tee -a /etc/hosts
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# minikube service --namespace nextcloud nextcloud
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kubectl apply --filename - <<EOF
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apiVersion: keda.sh/v1alpha1
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kind: ScaledObject
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metadata:
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name: grafana
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namespace: monitoring
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spec:
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scaleTargetRef:
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name: grafana
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minReplicaCount: 1
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maxReplicaCount: 5
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pollingInterval: 5
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advanced:
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restoreToOriginalReplicaCount: true
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triggers:
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- type: prometheus
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metadata:
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serverAddress: http://prometheus-server.monitoring
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metricName: nginx_ingress_controller_requests
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query: sum(rate(nginx_ingress_controller_requests{ingress="grafana"}[2m]))
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threshold: '1000'
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EOF
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ab -n 100000 -c 10 http://grafana/
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------
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#!/usr/bin/env bash
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## tested on macosx using minikube 1.17.0 and k8s v1.20.2 on Docker 20.10.2
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set -ex
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# minikube start --cpus 4 --memory 4GiB --vm
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# minikube addons enable ingress
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# minikube addons enable metrics-server
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helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
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helm repo add grafana https://grafana.github.io/helm-charts
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helm repo add kedacore https://kedacore.github.io/charts
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helm repo update
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cat > /tmp/values.demo.grafana.yaml <<EOF
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adminPassword: qwerty
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ingress:
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enabled: true
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hosts:
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- grafana
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EOF
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# echo "$(minikube ip) grafana prometheus" | sudo tee -a /etc/hosts
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helm upgrade --install --namespace monitoring --create-namespace prometheus prometheus-community/prometheus
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helm upgrade --install --namespace monitoring --create-namespace grafana grafana/grafana --values /tmp/values.demo.grafana.yaml
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helm upgrade --install --namespace scaling --create-namespace keda kedacore/keda
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kubectl patch service --namespace monitoring prometheus-server --patch '{
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"spec": {
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"type": "NodePort"
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}
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}'
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minikube service --namespace monitoring prometheus-server
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kubectl patch deployments.apps --namespace kube-system ingress-nginx-controller --patch '{
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"spec": {
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"template": {
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"metadata": {
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"annotations": {
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"prometheus.io/port": "10254",
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"prometheus.io/scrape": "true"
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}
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}
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}
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}
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}'
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curl "http://grafana/api/datasources" --request POST --user admin:qwerty --header "Content-Type: application/json" --data '{
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"name": "Prometheus",
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"type": "prometheus",
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"access": "proxy",
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"url": "http://prometheus-server"
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}'
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curl "https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/grafana/dashboards/nginx.json" | pbcopy
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open http://grafana/
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# import a dashboard pasting the clipboard's content
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kubectl apply --filename - <<EOF
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apiVersion: keda.sh/v1alpha1
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kind: ScaledObject
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metadata:
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name: grafana
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namespace: monitoring
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spec:
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scaleTargetRef:
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name: grafana
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minReplicaCount: 1
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maxReplicaCount: 5
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pollingInterval: 2
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advanced:
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restoreToOriginalReplicaCount: true
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triggers:
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- type: prometheus
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metadata:
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serverAddress: http://prometheus-server.monitoring
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metricName: nginx_ingress_controller_requests
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query: sum(rate(nginx_ingress_controller_requests{ingress="grafana"}[2m]))
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threshold: '10'
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EOF
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# HPA behavior is available from K8S v1.18.0
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# ---
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kubectl apply --filename - <<EOF
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apiVersion: keda.sh/v1alpha1
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kind: ScaledObject
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metadata:
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name: grafana
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namespace: monitoring
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spec:
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scaleTargetRef:
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name: grafana
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minReplicaCount: 1
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maxReplicaCount: 5
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pollingInterval: 2
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advanced:
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restoreToOriginalReplicaCount: true
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horizontalPodAutoscalerConfig:
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behavior:
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scaleDown:
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stabilizationWindowSeconds: 3
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policies:
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- type: Percent
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value: 100
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periodSeconds: 5
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scaleUp:
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stabilizationWindowSeconds: 3
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policies:
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- type: Percent
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value: 100
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periodSeconds: 5
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triggers:
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- type: prometheus
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metadata:
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serverAddress: http://prometheus-server.monitoring
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metricName: nginx_ingress_controller_requests
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query: sum(rate(nginx_ingress_controller_requests{ingress="grafana"}[2m]))
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threshold: '10'
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EOF
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ab -n 750 -c 1 http://grafana/
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