How to install and configure Prometheus on Ubuntu 18.04?

Prometheus is a powerful open-source monitoring and alerting system that helps you monitor various aspects of your system such as server metrics, network metrics, application metrics, and more. In this blog post, we will discuss how to install and configure Prometheus on Ubuntu 18.04.

Step 1: Update and Upgrade the Ubuntu System

Before installing Prometheus, it is recommended to update and upgrade the Ubuntu system to ensure that all the packages are up-to-date.

To update and upgrade the system, open the terminal and run the following commands

sudo apt-get update

sudo apt-get upgrade

Step 2: Install Prometheus

To install Prometheus on Ubuntu 18.04, follow these steps

Download the latest Prometheus release using the following command

wget https://github.com/prometheus/prometheus/releases/download/v2.27.1/prometheus-2.27.1.linux-amd64.tar.gz

Extract the downloaded file using the following command

tar xvfz prometheus-2.27.1.linux-amd64.tar.gz

Move the extracted folder to /opt directory using the following command

sudo mv prometheus-2.27.1.linux-amd64 /opt/prometheus

Step 3: Configure Prometheus

After installing Prometheus, you need to configure it by creating a configuration file. To create the configuration file, follow these steps

Create a configuration file named prometheus.yml in the /opt/prometheus directory using the following command

sudo nano /opt/prometheus/prometheus.yml

Add the following content to the file

global:

   scrape_interval: 15s

   evaluation_interval: 15s

scrape_configs:

   - job_name: 'prometheus'

     static_configs:

     - targets: ['localhost:9090']

Save and close the file by pressing Ctrl+X and then Y.

Step 4: Start Prometheus

To start Prometheus, follow these steps

Change the directory to /opt/prometheus using the following command

cd /opt/prometheus

Start Prometheus using the following command

./prometheus

Open a web browser and go to http://localhost:9090 to access the Prometheus dashboard.

Step 5: Add Prometheus as a System Service

To run Prometheus as a system service, follow these steps

Create a systemd unit file using the following command

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

Add the following content to the file

[Unit]

Description=Prometheus Server

Documentation=https://prometheus.io/docs/introduction/overview/

After=network-online.target


[Service]

User=prometheus

Restart=on-failure


ExecStart=/opt/prometheus/prometheus

--config.file /opt/prometheus/prometheus.yml

--storage.tsdb.path /opt/prometheus/data


[Install]

WantedBy=multi-user.target

Save and close the file by pressing Ctrl+X and then Y.

Reload the systemd daemon using the following command

sudo systemctl daemon-reload

Enable and start the Prometheus service using the following commands

sudo systemctl enable prometheus

sudo systemctl start prometheus

Conclusion

In this blog post, we discussed how to install and configure Prometheus on Ubuntu 18.04. With this monitoring tool, you can monitor your system and receive alerts whenever any issues occur. By following the steps outlined above, you can quickly set up Prometheus and start using it to monitor your system.


How to install and configure Prometheus on Ubuntu 20.04?

How to install and configure Prometheus on Ubuntu 22.04?

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