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How To Install Prometheus on Raspberry PI or Orange PI

Posted on by admin

Prometheus is a leading open-source monitoring solution with alerting functional. By default, Prometetheus export only itself metrics and need aditioanl module for accept more information. You can finde more information on: https://prometheus.io/

Safety First

We need one new user for prometeus service without home directory and shell access.

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

according linux best practise create two directorise, one for configuration and other for data. 

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

and set new user and group ownership 

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

Download and Unpack prometheus

Before download, find the latest stable verion on Prometeus download page. At this time it’s: prometheus-2.12.0.linux-armv7.tar.gz

download file and compere checksum: 

cd ~
wget https://github.com/prometheus/prometheus/releases/download/v2.12.0/prometheus-2.12.0.linux-armv7.tar.gz
 sha256sum  prometheus-2.12.0.linux-armv7.tar.gz

if checksume match than unpack archive: 

tar xvf  prometheus-2.12.0.linux-armv7.tar.gz

copy files and directories 

sudo cp  prometheus-2.12.0.linux-armv7/prometheus /usr/local/bin/ 
sudo cp  prometheus-2.12.0.linux-armv7/promtool /usr/local/bin/ 
sudo cp -r  prometheus-2.12.0.linux-armv7/consoles /etc/prometheus 
sudo cp -r  prometheus-2.12.0.linux-armv7/console_libraries /etc/prometheus

and set the user and group ownership 

sudo chown prometheus:prometheus /usr/local/bin/prometheus 
sudo chown prometheus:prometheus /usr/local/bin/promtool 
sudo chown -R prometheus:prometheus /etc/prometheus/consoles 
sudo chown -R prometheus:prometheus /etc/prometheus/console_libraries

finally, delete files and directory from your home 

rm -rf prometheus-2.12.0.linux-armv7.tar.gz prometheus-2.12.0.linux-armv7

Configuring prometeus to monitor itself

Create configuration in a file with named prometheus.yml: 

sudo nano /etc/prometheus/prometheus.yml

Prometheus config file /etc/prometheus/prometheus.yml

Important: Prometheus configuration file uses the YAML format, don’t user tabs! 

global:
  scrape_interval: 15s

scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:9090']

set the user and group ownership

sudo chown prometheus:prometheus /etc/prometheus/prometheus.yml

Let’s running Prometheus

create a new systemd service file. 

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

add following data into the file: /etc/systemd/system/prometheus.service 

[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

then reload systemd,

sudo systemctl daemon-reload

start service,

sudo systemctl start prometheus

check status,

sudo systemctl status prometheus

and after successful running enable the service to start on boot

sudo systemctl enable prometheus

find out your IP address

ifconfig

open link in browser

admin

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