How to install Prometheus and Grafana on Ubuntu

Prometheus and Grafana are essential open-source monitoring tools for Monitoring in DevOps. Collects metrics, and offers a holistic view.
Prometheus is an open-source monitoring toolkit crucial for proactive system health. It excels at collecting metrics from various sources, offering a holistic view of infrastructure. With PromQL, its flexible querying language, Prometheus enables granular analysis to identify bottlenecks and anomalies before performance is affected. Its scalability makes it suitable for diverse environments.

Prometheus: Empowering Real-Time Monitoring

⁠Prometheus, an open-source monitoring and alerting toolkit, is the linchpin for proactive system monitoring. Designed for scalability, Prometheus excels at collecting metrics from diverse sources, providing a holistic view of your infrastructure’s health. With its flexible querying language, PromQL, Prometheus enables granular analysis, helping you identify bottlenecks and anomalies before they impact performance.

In the ever-evolving landscape of digital ecosystems, Prometheus stands out by seamlessly integrating with various applications and services, making it an ideal choice for organizations embracing microservices architectures. Its robust alerting system ensures that potential issues are addressed promptly, reducing downtime and enhancing overall system reliability. ⁠ ⁠Grafana: Crafting Intuitive Visualizations

Enter Grafana, the visualization powerhouse that complements Prometheus with stunning dashboards and interactive graphs. Grafana transforms raw data into actionable insights, providing a user-friendly interface that facilitates data exploration and correlation. This intuitive platform supports a wide array of data sources, making it a versatile choice for businesses with diverse tech stacks.

Set up Prometheus to monitor your application.
Install Dependencies

sudo apt-get update
sudo apt-get install -y apt-transport-https software-properties-common

First, create a dedicated Linux user for Prometheus and download Prometheus:

sudo useradd --system --no-create-home --shell /bin/false prometheus
wget https://github.com/prometheus/prometheus/releases/download/v2.47.1/prometheus-2.47.1.linux-amd64.tar.gz

Extract Prometheus files, move them, and create directories:

tar -xvf prometheus-2.47.1.linux-amd64.tar.gz
cd prometheus-2.47.1.linux-amd64/
sudo mkdir -p /data /etc/prometheus
sudo mv prometheus promtool /usr/local/bin/
sudo mv consoles/ console_libraries/ /etc/prometheus/
sudo mv prometheus.yml /etc/prometheus/prometheus.yml

Set ownership for directories:

sudo nano /etc/systemd/system/prometheus.service

Add the following content to the prometheus.service file:

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

StartLimitIntervalSec=500
StartLimitBurst=5

[Service]
User=prometheus
Group=prometheus
Type=simple
Restart=on-failure
RestartSec=5s
ExecStart=/usr/local/bin/prometheus \
  --config.file=/etc/prometheus/prometheus.yml \
  --storage.tsdb.path=/data \
  --web.console.templates=/etc/prometheus/consoles \
  --web.console.libraries=/etc/prometheus/console_libraries \
  --web.listen-address=0.0.0.0:9090 \
  --web.enable-lifecycle

[Install]
WantedBy=multi-user.target

Here’s a brief explanation of the key parts of this prometheus.service file:

• User and Group specify the Linux user and group under which Prometheus will run.
• ExecStart is where you specify the Prometheus binary path, the location of the configuration file (prometheus.yml), the storage directory, and other settings.
• web.listen-address configures Prometheus to listen on all network interfaces on port 9090.
• web.enable-lifecycle allows for the management of Prometheus through API calls.

Enable and start Prometheus:

sudo systemctl enable prometheus
sudo systemctl start prometheus

Verify Prometheus’s status:

sudo systemctl status prometheus

You can access Prometheus in a web browser using your server’s IP and port 9090:

http://<your-server-ip>:9090

Set up Prometheus to visualize your metrics.
Install Dependencies

sudo apt-get update
sudo apt-get install -y apt-transport-https software-properties-common

Add the GPG Key:

wget -q -O - https://packages.grafana.com/gpg.key | sudo apt-key add -

Add Grafana Repository: Add the repository for Grafana stable releases

echo "deb https://packages.grafana.com/oss/deb stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list

Update and Install Grafana:

sudo apt-get update
sudo apt-get -y install grafana

Enable and Start Grafana Service:

sudo systemctl enable grafana-server

Start Grafana:

sudo systemctl start grafana-server

Check Grafana Status:

sudo systemctl status grafana-server

Access Grafana Web Interface:

http://<your-server-ip>:3000

You’ll be prompted to log in to Grafana. The default username is “admin,” and the default password is also “admin.”

Change the Default Password:

When you log in for the first time, Grafana will prompt you to change the default password for security reasons. Follow the prompts to set a new password.

After Installing Prometheus and Grafana you need to install the node exporter for sending the logs from Prometheus to Grafana and Visualize this on the Graphical Dashboard.