Prometheus Node Exporter on AWS EC2

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Setup Node Exporter Binary:

Step 1: Download the latest node exporter package. You should check the Prometheus downloads section for the latest version and update this command to get that package.

cd /tmp

wget https://github.com/prometheus/node_exporter/releases/download/v1.4.0-rc.0/node_exporter-1.4.0-rc.0.linux-amd64.tar.gz

Step 2: Unpack the tarball

tar -xvf node_exporter-0.18.1.linux-amd64.tar.gz

Step 3: Move the node export binary to /usr/local/bin

sudo mv node_exporter-0.18.1.linux-amd64/node_exporter /usr/local/bin/


Create a Custom Node Exporter Service:

Step 1: Create a node_exporter user to run the node exporter service.

sudo useradd -rs /bin/false node_exporter 

Step 2: Create a node_exporter service file under systemd. 

sudo vi /etc/systemd/system/node_exporter.service

Step 3: Add the following service file content to the service file and save it.

[Unit]

Description=Node Exporter

After=network.target

[Service]

User=node_exporter

Group=node_exporter

Type=simple

ExecStart=/usr/local/bin/node_exporter

[Install]

WantedBy=multi-user.target

Step 4: Reload the system daemon and star the node exporter service.

sudo systemctl daemon-reload

sudo systemctl start node_exporter

Step 5: check the node exporter status to make sure it is running in the active state.

sudo systemctl status node_exporter

Step 6: Enable the node exporter service to the system startup.

sudo systemctl enable node_exporter

Step 7: Access Node Exporter Web UI

http://serverip:9100/metrics


Setup Target on Prometheus Server:

Now that we have the node exporter up and running on the server, we have to add this server a target on the Prometheus server configuration.

Note: This configuration should be done on the Prometheus server.

Step 1: Login to the Prometheus server and open the prometheus.yml file.

sudo vi /etc/prometheus/prometheus.yml

Step 2: Under the scrape config section add the node exporter target as shown below. 

- job_name: 'node_exporter_metrics'

    scrape_interval: 5s

    static_configs:

      - targets: ['serverip:9100']

Step 3: Restart the prometheus service for the configuration changes to take place.

sudo systemctl restart prometheus

Step 4: Access Node Exporter  on Prometheus Web UI

http://ec2serverip:9090/targets

Learn about What is Prometheus? and How does it work?

Prometheus Architecture?


Prometheus Node Exporter Configuration

---

Thanks & Regards,

Kanchan Soni (https://linktr.ee/kanchansoni)

(A girl who saw the dream with an open eye to compete with self capability in the area of IT and its Next-Gen Technology, with the ability to complete the task with perfection.)

Email: kanchansoni.cse@gmail.com



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