Specification : Monitoring, Grafana, Prometheus, Node Exporter

vm-stat

Introduction :

Maximizing the performance of virtual machines (VMs) is crucial for maintaining efficient and reliable systems. By utilizing the powerful combination of Grafana, Prometheus, and Node Exporter, you can effectively monitor and optimize VM stats. Grafana provides intuitive visualizations and dashboards, Prometheus enables real-time data collection, and Node Exporter collects essential system metrics. This integrated solution empowers you to identify bottlenecks, fine-tune resource allocation, and enhance overall VM performance. Discover how this dynamic trio can revolutionize your VM monitoring and boost your system’s efficiency.

Installation :

Grafana Setup

Before installing Prometheus and Node Exporter, it’s crucial to have Grafana set up and configured in your system. Grafana plays a pivotal role in our monitoring setup, offering a user-friendly interface for visualizing and analyzing data.

You can install and configure Grafana by following the steps outlined in the Grafana Download Page. Ensure Grafana is up and running, as it will serve as the cornerstone for integrating with Prometheus and Node Exporter, facilitating a comprehensive and effective VM monitoring solution.

Create User

useradd --no-create-home --shell /bin/false prometheus
useradd --no-create-home --shell /bin/false node_exporter

Create folder Prometheus

mkdir /etc/prometheus
mkdir /var/lib/prometheus

Set User and Group Ownership folder

chown prometheus:prometheus /etc/prometheus
chown prometheus:prometheus /var/lib/prometheus

 

1. Download Prometheus

To download Prometheus, you can visit the Prometheus releases page on GitHub. From there, you can select the desired version and download the corresponding release package.

wget https://github.com/prometheus/prometheus/releases/download/v2.48.1/prometheus-2.48.1.linux-amd64.tar.gz
tar -xzvf prometheus-2.48.1.linux-amd64.tar.gz

Copy folder prometheus and promtool

cp prometheus-2.48.1.linux-amd64/prometheus /usr/local/bin/
cp prometheus-2.48.1.linux-amd64/promtool /usr/local/bin/

Set User and Group Ownership folder

chown prometheus:prometheus /usr/local/bin/prometheus
chown prometheus:prometheus /usr/local/bin/promtool

Copy folder consoles and console_libraries

cp -R prometheus-2.48.1.linux-amd64/consoles /etc/prometheus/
cp -R prometheus-2.48.1.linux-amd64/console_libraries /etc/prometheus/

Set user and group ownership folder consoles and console_libraries

chown -R prometheus:prometheus /etc/prometheus/consoles
chown -R prometheus:prometheus /etc/prometheus/console_libraries

 

2. Configure Prometheus

Create Configuration file for Prometheus

nano /etc/prometheus/prometheus.yml

and add file:

global:
  scrape_interval: 15s
scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 5s
    static_configs:
      - targets: ['192.168.13.11:17845']

Set user and group ownership prometheus.yml

chown prometheus:prometheus /etc/prometheus/prometheus.yml

 

3. Prometheus Service

Create service for Prometheus

nano /etc/systemd/system/prometheus.service

and add file:

[Unit]
Description=Prometheus
Wants=network-online.target
After=network-online.target

[Service]
User=prometheus
Group=prometheus
Type=simple
ExecStart=/usr/local/bin/prometheus \
    --config.file /etc/prometheus/prometheus.yml \
    --storage.tsdb.path /var/lib/prometheus/ \
    --web.console.templates=/etc/prometheus/consoles \
    --web.console.libraries=/etc/prometheus/console_libraries \
    --web.listen-address=:17845

[Install]
WantedBy=multi-user.target

and activate prometheus service

systemctl daemon-reload
systemctl enable prometheus
systemctl start prometheus
systemctl status prometheus

 

4. Download Node Exporter

To download Node Exporter, you can visit the Node Exporter releases page on GitHub. From there, you can select the desired version and download the corresponding release package.

wget https://github.com/prometheus/node_exporter/releases/download/v1.7.0/node_exporter-1.7.0.linux-amd64.tar.gz
tar -xzvf node_exporter-1.7.0.linux-amd64.tar.gz

Copy node_exporter. Set user and group ownership node_exporter.

cp node_exporter-1.7.0.linux-amd64/node_exporter /usr/local/bin/
chown node_exporter:node_exporter /usr/local/bin/node_exporter

 

5. Node Exporter Service

Create service for node_exporter

nano /etc/systemd/system/node_exporter.service

and add file:

[Unit]
Description=Node Exporter
Wants=network-online.target
After=network-online.target

[Service]
User=node_exporter
Group=node_exporter
Type=simple
ExecStart=/usr/local/bin/node_exporter --web.listen-address=:1322

[Install]
WantedBy=multi-user.target

and activate node_exporter service

systemctl daemon-reload
systemctl enable node_exporter
systemctl start node_exporter
systemctl status node_exporter

 

6. Prometheus Configuration for Node Exporter

Open prometheus.yml configuration file

nano /etc/prometheus/prometheus.yml

and add job for node_exporter

  - job_name: 'node_exporter'
    scrape_interval: 5s
    static_configs:
      - targets: ['192.168.13.11:1322']

and the final result prometheus.yml file

global:
  scrape_interval: 15s
scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 5s
    static_configs:
      - targets: ['192.168.13.11:17845']
  - job_name: 'node_exporter'
    scrape_interval: 5s
    static_configs:
      - targets: ['192.168.13.11:1322']

and then, restart prometheus

systemctl restart prometheus
systemctl status prometheus

 

7. Add Node Exporter (Optional)

Prometheus can access metrics that are on other servers that have Node Exporter installed by adding the IP address in the prometheus.yml configuration.

global:
  scrape_interval: 15s
scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 5s
    static_configs:
      - targets: ['192.168.13.10:17845']
  - job_name: 'node_exporter'
    scrape_interval: 5s
    static_configs:
      - targets: ['192.168.13.11:1322', '192.168.13.12:1322']

Import Grafana Dashboard Node Exporter: 11074