Prometheus Pushgateway Demo

Prerequisites

• docker 19.03.12
• kubectl 1.18
• helm 3.2.1
• k3d 1.7

Or, if using Nix, run nix-shell (you will still have to have docker installed)

Create the cluster with k3d

k3d create cluster promgateway-demo

set environment for kubectl

export KUBECONFIG=$(k3d get-kubeconfig)

add helm repo

helm repo add stable https://kubernetes-charts.storage.googleapis.com/
helm repo update

install prometheus helm chart

helm install promgateway-demo stable/prometheus

Forward prometheus dashboard to localhost:9090

kubectl port-forward svc/promgateway-demo-prometheus-server 9090:80 &

build the docker image

docker build -t promgateway-demo:1 .

load the image into k3d

k3d import-images promgateway-demo:1

apply the cronjob and configmap

kubectl apply -f kubernetes.yml

visit http://localhost:9090/new/graph?g0.expr=promgatewaydemo_http_request_last_run_unixtime