k8s-lab/k3s/rpi/monitoring/prometheus/instructions.txt

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# Install the Helm repo with:
helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update
# Get values and modify to fit your setup:
helm show values prometheus-community/kube-prometheus-stack > values.yaml
# Then install (in this case in the "monitoring" namespace):
helm install -f values.yaml kube-prometheus-stack prometheus-community/kube-prometheus-stack -n monitoring
# If you need to change stuff after, edit the "values.yaml" file and upgrade the deployment with it:
helm upgrade -n monitoring kube-prometheus-stack prometheus-community/kube-prometheus-stack -f values.yaml
# Then create the service to access Grafana:
cat <<EOF > grafana.service.yaml
apiVersion: v1
kind: Service
metadata:
name: kube-monitoring-stack-grafana
namespace: monitoring
spec:
selector:
app.kubernetes.io/instance: kube-prometheus-stack
app.kubernetes.io/name: grafana
ports:
- protocol: TCP
port: 1080
targetPort: 3000
EOF
kubectl apply -f grafana.service.yaml