# Node Exporter + Prometheus

```
wget https://github.com/prometheus/node_exporter/releases/download/v1.9.1/node_exporter-1.9.1.linux-amd64.tar.gz

from this page https://prometheus.io/download/

tar xzvf node_exporter-1.9.1.linux-amd64.tar.gz

mv node_exporter-1.9.1.linux-amd64.tar.gz node_exporter

nano /etc/systemd/system/node_exporter.service

[Unit]
Description=Node Exporter

[Service]
User=root
ExecStart=/opt/node_exporter/node_exporter --web.listen-address="127.0.0.1:9100"

[Install]
WantedBy=default.target


systemctl daemon-reload
systemctl start node_exporter
systemctl status node_exporter

```

```
wget https://github.com/prometheus/prometheus/releases/download/v3.5.0/prometheus-3.5.0.linux-amd64.tar.gz

tar xzvf prometheus-3.5.0.linux-amd64.tar.gz

mv prometheus-3.5.0.linux-amd64 prometheus

cd prometheus

nano prometheus.yml

# my global config
global:
  scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).

# Alertmanager configuration
alerting:
  alertmanagers:
    - static_configs:
        - targets:
          # - alertmanager:9093

# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: "prometheus"

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
      - targets: ["127.0.0.1:9090"]
  - job_name: "node_exporter"
    static_configs:
      - targets: ["127.0.0.1:9100"]       
# The label name is added as a label `label_name=<label_value>` to any timeseries scraped from this config.
        labels:
          app: "prometheus"
          
          
          
./promtool check config prometheus.yml

nano /etc/systemd/system/prometheus.service

[Service]
User=root
ExecStart=/opt/prometheus/prometheus \
        --web.listen-address=0.0.0.0:9090 \
        --config.file=/opt/prometheus/prometheus.yml
        --storage.tsdb.path=/var/lib/prometheus
        --storage.tsdb.retention.time=30d

[Install]
WantedBy=default.target



systemctl daemon-reload
systemctl start prometheus
systemctl status prometheus
```


---

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