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How to install and configure prometheus, grafana and node exporter on ubuntu server


1. Download and install prometheus

Run the following command line for download and install prometheus :

wget https://github.com/prometheus/prometheus/releases/download/v2.37.6/prometheus-2.37.6.linux-amd64.tar.gz
tar xvfz prometheus-*.tar.gz
rm prometheus-*.tar.gz
sudo mkdir /etc/prometheus /var/lib/prometheus
cd prometheus-2.37.6.linux-amd64
sudo mv prometheus promtool /usr/local/bin/
sudo mv prometheus.yml /etc/prometheus/prometheus.yml
sudo mv consoles/ console_libraries/ /etc/prometheus/
prometheus --version

2. Configure prometheus as a service

Run the following command line for configure prometheus:

sudo useradd -rs /bin/false prometheus
sudo chown -R prometheus: /etc/prometheus /var/lib/prometheus
sudo vi /etc/systemd/system/prometheus.service

Create file /etc/systemd/system/prometheus.service and then fill out it with the following configuration :

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

[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 /var/lib/prometheus/ \
    --web.console.templates=/etc/prometheus/consoles \
    --web.console.libraries=/etc/prometheus/console_libraries \
    --web.listen-address=0.0.0.0:9090 \
    --web.enable-lifecycle \
    --log.level=info

[Install]
WantedBy=multi-user.target


and then run the following command line :

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

If you want to acces prometheus web dashboard, you can access it via url http://local_ip_addr:9090

3. Install and configure node exporter on client node

Run the following command line on client node
wget https://github.com/prometheus/node_exporter/releases/download/v1.5.0/node_exporter-1.5.0.linux-amd64.tar.gz
tar xvfz node_exporter-*.tar.gz
sudo mv node_exporter-1.5.0.linux-amd64/node_exporter /usr/local/bin
rm -r node_exporter-1.5.0.linux-amd64*
node_exporter

If you want running node exporter as a service on systemd, you can follow the following step :

sudo useradd -rs /bin/false node_exporter
nano /etc/systemd/system/node_exporter.service

fill out  /etc/systemd/system/node_exporter.service file with the following configuration :

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

[Service]
User=node_exporter
Group=node_exporter
Type=simple
Restart=on-failure
RestartSec=5s
ExecStart=/usr/local/bin/node_exporter

[Install]
WantedBy=multi-user.target

and then run the following command line :

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

4. Configure prometheus for monitoring client node

Edit  /etc/prometheus/prometheus.yml file, and then fill out the following configuration under  scrape_configs word 
- job_name: "remote_collector"
  scrape_interval: 10s
  static_configs:
     - targets: ["remote_addr:9100"]

Run the following command line :

sudo systemctl restart prometheus

5. Install and configure grafana server

You can follow the following step for install grafana server :
sudo apt-get install -y apt-transport-https software-properties-common
sudo wget -q -O /usr/share/keyrings/grafana.key https://apt.grafana.com/gpg.key
echo "deb [signed-by=/usr/share/keyrings/grafana.key] https://apt.grafana.com stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list
sudo apt-get update
sudo apt-get install grafana
sudo systemctl daemon-reload
sudo systemctl enable grafana-server.service
sudo systemctl start grafana-server
sudo systemctl status grafana-server

6. Integration prometheus with grafana

the first, you can login into grafana dashboard  via url http://local_ip_addr:3000 with username:admin and password:admin. and then select Configuration menu --> Data Source --> Add Data Source --> Prometheus. in the URL section you can fill out it with http://localhost:9090. then klik Save & test

7. Import grafana dashboard

If you want to display metrics of each client node on grafana dashboard, you must first import the dashboard. you can follow the following step :
  • Open url Grafana Dashboard Library then type Node Exporter Full
  • Klik Node Exporter Full then press download button
  • Back to grafana dashboard. select menu Dashboard --> Import --> Upload dashboard by pointing to Node Exporter Full dashboard that you just downloaded.
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