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Pierangelo
Pierangelo

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Monitoring with Prometheus & Grafana

#grafana #prometheus #monitoring

How set a monitoring system with prometheus, node_exporter and grafana dashboard.

N.B: this tutorial is based on UBUNTU

Prometheus

create prometheus user:

sudo useradd --no-create-home --shell /bin/false prome
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create directories

sudo mkdir /etc/prometheus sudo mkdir /var/lib/prometheus
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download prometheus on your server:

wget https://github.com/prometheus/prometheus/releases/download/v2.29.0-rc.1/prometheus-2.29.0-rc.1.linux-amd64.tar.gz
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extract the tar file

tar xvfz prometheus-*.tar.gz
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enter in the folder:

cd prometheus-*
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edit prometheus.yml

vim prometheus.yml
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copy prometheus folder (not the root folder but the folder inside the root folder) in:

sudo cp -rf prometheus /usr/local/bin/ sudo cp -rf promtool /usr/local/bin/
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set permission:

sudo chown prome:prome /usr/local/bin/prometheus sudo chown prome:prome /usr/local/bin/promtool
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copy files:

sudo cp -rf consoles /etc/prometheus sudo cp -rf console_libraries/ /etc/prometheus/
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set permissions in /etc

sudo chown -R prome:prome /etc/prometheus/consoles sudo chown -R prome:prome /etc/prometheus/console_libraries
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copy prometheus.yml

sudo cp prometheus.yml /etc/prometheus/prometheus.yml
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start prometheus

./prometheus --config.file=prometheus.yml
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create service file:

sudo vim /etc/systemd/system/prometheus.service
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and add this code:

[Unit] Description=Prometheus Wants=network-online.target After=network-online.target [Service] User=prome Group=prome 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
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reload daemon

sudo systemctl daemon-reload
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system command:

sudo systemctl start prometheus sudo systemctl enable prometheus sudo systemctl status prometheus
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check:

http://your-machine-ip:9090

node exporter

download node exportyet:

wget https://github.com/prometheus/node_exporter/releases/download/v1.2.2/node_exporter-1.2.2.linux-amd64.tar.gz
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extract:

tar xvfz node_exporter-1.2.2.linux-amd64.tar.gz
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enter in the extracted folder:

 cd node_exporter-1.2.2.linux-amd64
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run node exportyer

./node_exporter
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check metrics on:
http://your-vps-ip:9100

back to prometheus.yml and add ip and port node_exporter

 - job_name: "node exporter test" static_configs: - targets: ['localhost:9100']
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node exporter as service

create user:

sudo useradd -rs /bin/false node_exporter
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copy node exporter in bin folder

sudo cp -rf node_exporter-1.2.2.linux-amd64/node_exporter /usr/local/bin
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create service file

vim /etc/systemd/system/node_exporter.service
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[Unit] Description=Node Exporter After=network.target [Service] User=node_exporter Group=node_exporter Type=simple ExecStart=/usr/local/bin/node_exporter [Install] WantedBy=multi-user.target
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launch sevice commands:

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

install dependency library:

sudo apt-get install -y adduser libfontconfig1
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download deb

wget https://dl.grafana.com/oss/release/grafana_8.1.0_amd64.deb
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install:

sudo dpkg -i grafana_8.1.0_amd64.deb
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check:

http://your-vps-ip:3000/login

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