Tuto : Installation de Prometheus / Grafana

Installation de Grafana

wget -q -O - https://packages.grafana.com/gpg.key | gpg --dearmor | sudo tee /usr/share/keyrings/grafana.gpg > /dev/null

echo "deb [signed-by=/usr/share/keyrings/grafana.gpg] https://packages.grafana.com/oss/deb stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list

sudo apt update

sudo apt install grafana

sudo systemctl status grafana-server

sudo systemctl enable grafana-server

Installation de Prometheus

Téléchargement des sources

curl -s https://api.github.com/repos/prometheus/prometheus/releases/latest|grep browser_download_url|grep linux-amd64|cut -d '"' -f 4|wget -qi -

Décompression des sources

sudo mkdir /var/lib/prometheus
tar xvf prometheus*.tar.gz
cd prometheus*/

sudo mv prometheus promtool /usr/local/bin/
sudo mv consoles console_libraries prometheus.yml /etc/prometheus/
sudo chown -R prometheus:prometheus /var/lib/prometheus/

Création du compte de service

sudo groupadd --system prometheus
sudo useradd -s /sbin/nologin --system -g prometheus prometheus

Création du service prometheus.service

sudo tee /etc/systemd/system/prometheus.service<<EOF
[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 \
    --web.enable-admin-api \
    --log.level=info

[Install]
WantedBy=multi-user.target
EOF

sudo systemctl daemon-reload

sudo systemctl start prometheus
sudo systemctl enable prometheus

sudo systemctl status prometheus

Installation de node_exporter

sudo groupadd --system prometheus
sudo useradd -s /sbin/nologin --system -g prometheus prometheus

curl -s https://api.github.com/repos/prometheus/node_exporter/releases/latest| grep browser_download_url|grep linux-amd64|cut -d '"' -f 4|wget -qi -

tar -xvf node_exporter*.tar.gz
cd  node_exporter*/

sudo cp node_exporter /usr/local/bin

which node_exporter
node_exporter --version

Création du service node_exporter.service

sudo tee /etc/systemd/system/node_exporter.service <<EOF
[Unit]
Description=Node Exporter
Wants=network-online.target
After=network-online.target

[Service]
User=prometheus
ExecStart=/usr/local/bin/node_exporter

[Install]
WantedBy=default.target
EOF

sudo systemctl start node_exporter
sudo systemctl enable node_exporter

sudo systemctl status node_exporter

Ajout du node dans Prometheus

sudo nano /etc/prometheus/prometheus.yml

scrape_configs:
....
....
  - job_name: "node_exporter"

    static_configs:
      - targets: ["192.168.5.100:9100"]

sudo systemctl restart prometheus

sudo systemctl status prometheus