node-exporter v0.1.0

Observability

Prometheus Node Exporter — exposes a node's hardware and OS metrics (CPU, memory, disk, filesystem, network, load) at a /metrics endpoint for Prometheus to scrape. Deployed as a host-networked Nomad service that reads the host read-only; run one per node and point the monitoring pack at it.

nomad-pack run node-exporter --registry nomploy

…or one line (add registry + run)

curl -fsSL https://packs.nomploy.com/install.sh | sh -s -- node-exporter

Needs nomad-pack on PATH. The script only adds the nomploy registry and runs this pack.

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1 task metrics 9100 image quay.io/prometheus/node-exporter:latest tracks :latest image bumped today

Variables 7

values.hcl

Save as values.hcl, edit, then run:

nomad-pack run node-exporter -f values.hcl --registry nomploy

# The name of the Nomad job.
job_name = "node-exporter"

# The Nomad namespace to deploy into.
namespace = "default"

# The datacenters to deploy to.
datacenters = ["*"]

# The Node Exporter container image. Pin a tag in production.
image = "quay.io/prometheus/node-exporter:latest"

# Host port for the metrics endpoint (--web.listen-address).
port = 9100

# Placement constraints. On a nomploy cluster: attribute = "$${meta.nomploy_control_plane}", operator = "=", value = "true".
constraints = []

# Resources for the Node Exporter task.
resources = {
    cpu    = 100
    memory = 64
  }

Name	Type	Default	Description
job_name	string	"node-exporter"	The name of the Nomad job.
namespace	string	"default"	The Nomad namespace to deploy into.
datacenters	list	["*"]	The datacenters to deploy to.
image	string	"quay.io/prometheus/node-exporter:latest"	The Node Exporter container image. Pin a tag in production.
port	number	9100	Host port for the metrics endpoint (--web.listen-address).
constraints	list	[]	Placement constraints. On a nomploy cluster: attribute = "$${meta.nomploy_control_plane}", operator = "=", value = "true".
resources	object	{ cpu = 100 memory = 64 }	Resources for the Node Exporter task.

Readme

node-exporter

Prometheus Node Exporter — exposes a machine's hardware and OS metrics (CPU, memory, disk I/O, filesystem, network, load, temperatures) on a /metrics endpoint for Prometheus to scrape. The standard way to monitor a Linux host.

Single host-networked Nomad service that reads the host read-only.

Deploy

nomad-pack registry add nomploy https://github.com/Nomploy/nomad-packs
nomad-pack run node-exporter --registry=nomploy

Configure

Variable	Default	Description
`port`	`9100`	Metrics port (`--web.listen-address`).
`image`	`quay.io/prometheus/node-exporter:latest`	Container image. Pin a tag in production.
`resources`	`{ cpu = 100, memory = 64 }`	Task resources.

Add a scrape target http://<node-ip>:9100/metrics in Prometheus (the monitoring pack) and import a Node Exporter dashboard in Grafana. The job bind-mounts / at /host (read-only) with --path.rootfs=/host and uses the host PID namespace for accurate metrics. Run one instance per node (pin with constraints). The endpoint is unauthenticated — keep it on an internal network.

Note: the monitoring pack already bundles node-exporter as a sidecar; use this standalone pack on nodes that aren't running that all-in-one stack.