\n\n# Prometheus Node Exporter Helm Chart\n\nPrometheus node-exporter is a Prometheus exporter for hardware and OS metrics exposed by *NIX kernels. The Prometheus Node Exporter Helm chart automates deployment and configuration of prometheus node-exporter in Kubernetes clusters using Minimus images.\n\n\n## {{icon-list-search}} Prerequisites\n\n- A subscription to the Minimus images included in the chart\n- A running Kubernetes cluster (v1.21 or higher is recommended)\n- `kubectl` installed and configured\n- Helm v3.8 or higher for OCI support ([Installation instructions](https://helm.sh/docs/intro/install/))\n- Cluster Admin privileges\n\n

\n\n---\n\n

\n\n## {{icon-rocket}}Try It Out\n\nIn this example we will deploy prometheus node-exporter on a Kubernetes cluster using the Minimus Prometheus Node Exporter Helm chart. It will collect hardware and OS-level metrics from every node in your cluster.\n\n

\n\n### Step 1: Start Cluster\n\n

\n\nIf you have a cluster to work with, skip this step. Otherwise, start a Minikube cluster. [Deployment instructions](https://minikube.sigs.k8s.io/docs/start/?arch=%2Flinux%2Fx86-64%2Fstable%2Fbinary+download)\n\n

\n\n### Step 2: Create Secret\n\n

\n\nFirst, create a namespace:\n\n```\nkubectl create ns prometheus-node-exporter\n```\n\nNext, create a Kubernetes secret for the Minimus token so Helm will be able to pull images from the Minimus registry:\n\n```\nkubectl create secret docker-registry minimus-registry \\\n --docker-server=reg.mini.dev \\\n --docker-username=minimus \\\n --docker-password={{pull-token}} \\\n --namespace=prometheus-node-exporter\n```\n\n

\n\n### Step 3: Deploy the Helm Chart\n\n

\n\nDeploy the Minimus Helm chart:\n\n```\nhelm install my-prometheus-node-exporter {{oci-url}} \\\n -n prometheus-node-exporter \\\n --wait\n```\n\nIf you want to override the chart's defaults, go to the Values tab, save a copy locally with your changes. Deploy the chart with your overrides using `-f values.yaml`:\n\n```\nhelm install my-prometheus-node-exporter {{oci-url}} \\\n -f values.yaml \\\n -n prometheus-node-exporter \\\n --wait\n```\n\n

\n\n### Step 4: Verify Prometheus Node Exporter is Running\n\n

\n\nConfirm the chart deployed successfully and prometheus node-exporter started:\n\n```\nkubectl get pods -n prometheus-node-exporter\n```\n\nYou should see output similar to:\n\n```\nNAME READY STATUS RESTARTS AGE\nmy-prometheus-node-exporter-xxxxx 1/1 Running 0 2m\n```\n\n

\n\n### Step 5: Test HTTP Endpoint\n\n

\n\nPort-forward the prometheus-node-exporter service to access the metrics endpoint locally:\n\n```\nkubectl port-forward svc/my-prometheus-node-exporter -n prometheus-node-exporter 9100:9100\n```\n\nIn a separate terminal, query the metrics endpoint:\n\n```\ncurl -sf http://localhost:9100/metrics | head -20\n```\n\nYou should see Prometheus-format metrics starting with `node_`:\n\n```\n# HELP node_cpu_seconds_total Seconds the CPUs spent in each mode.\n# TYPE node_cpu_seconds_total counter\nnode_cpu_seconds_total{cpu=\"0\",mode=\"idle\"} 12345.67\n```\n\n

\n\n### Step 6: Clean Up\n\n

\n\nUninstall the chart and delete the namespace to remove all resources:\n\n```bash\nhelm uninstall my-prometheus-node-exporter -n prometheus-node-exporter\nkubectl delete namespace prometheus-node-exporter\n```\n\n

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