How to install Prometheus on Ubuntu

Update Your System

Ensure your system is up to date.

sudo apt update

Create a Prometheus User

For security reasons, create a separate user to run Prometheus.

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

Create Directories for Prometheus

Create directories to store Prometheus binaries and configuration files.

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

Download Prometheus

Download the latest version of Prometheus from the official website.

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

Extract the Prometheus Archive

Extract the downloaded tarball and move the files to the appropriate locations.

tar -xvf prometheus-2.48.1.linux-amd64.tar.gz
cd prometheus-2.48.1.linux-amd64

sudo mv prometheus /usr/local/bin/
sudo mv promtool /usr/local/bin/

sudo mv consoles /etc/prometheus
sudo mv console_libraries /etc/prometheus
sudo mv prometheus.yml /etc/prometheus/

Set Ownership

Set the ownership for the Prometheus directories.

sudo chown -R prometheus:prometheus /etc/prometheus
sudo chown -R prometheus:prometheus /var/lib/prometheus

Create a Systemd Service File

Create a systemd service file to manage the Prometheus service.

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

Add the following code to the file:

iniCopy code[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

[Install]
WantedBy=multi-user.target

Start and Enable Prometheus

Reload systemd to recognize the Prometheus service and then start and enable the service.

sudo systemctl daemon-reload
sudo systemctl start prometheus
sudo systemctl enable prometheus

Verify Prometheus is Running

Check the status of the Prometheus service to ensure it's running correctly.

sudo systemctl status prometheus

Access Prometheus Web Interface

Prometheus should now be running and accessible via its web interface.http://<your-server-ip>:9090.

You can now start monitoring your applications using Prometheus.