This project was created just to test K8S Horizontal Pod Autoscaler.
It exports fake_metric with a value fetched from http_endpoint.
Arguments required:
Below you will find code snippet with prometheus-fake-exporter deployment and HPA associated with that deployment scaling based on Object Deployment metric.
By replacing a value in github gist you can change HPA behaviour and see how it works for yourself.
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: prometheus-fake-exporter
spec:
replicas: 1
template:
metadata:
annotations:
# Automatic prometheus scraping
prometheus.io/port: '9100'
prometheus.io/scrape: 'true'
scope: cluster
labels:
app: prometheus-fake-exporter
spec:
automountServiceAccountToken: false
containers:
- image: 3h4x/prometheus-fake-exporter:latest
name: prometheus-fake-exporter
ports:
- containerPort: 9100
env:
- name: LABEL_NAME
value: deployment
- name: LABEL_VALUE
value: prometheus-fake-exporter
- name: VALUE_HTTP_ENDPOINT
value: https://gist.githubusercontent.com/3h4x/38ba057db9cbb80c7bf8ad768a90d086/raw/value
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
---
apiVersion: autoscaling/v2beta1
kind: HorizontalPodAutoscaler
metadata:
name: prometheus-fake-exporter
spec:
maxReplicas: 40
minReplicas: 10
scaleTargetRef:
apiVersion: extensions/v1beta1
kind: Deployment
name: prometheus-fake-exporter
metrics:
- type: Object
object:
metricName: fake_metric
target:
kind: Deployment
name: prometheus-fake-exporter
targetValue: 10
Content type
Image
Digest
Size
31.1 MB
Last updated
almost 7 years ago
docker pull 3h4x/prometheus-fake-exporter