## Prometheus
Guidance of setup installation at Ubuntu VM

### User Add Permission

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

### Create Directory

sudo mkdir /etc/prometheus

sudo mkdir /var/lib/prometheus

### Change Group Ownership (chown)

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

### Download Prometheus

sudo wget https://github.com/prometheus/prometheus/releases/download/v2.44.0/prometheus-2.44.0.linux-amd64.tar.gz

`sudo tar -xzvf prometheus-2.44.0.linux-amd64.tar.gz`

### Copy folder

sudo cp prometheus-2.44.0.linux-amd64/prometheus /usr/local/bin/

`sudo cp prometheus-2.44.0.linux-amd64/promtool /usr/local/bin/`

### Set user and group ownership folder

sudo chown -R prometheus:prometheus /etc/prometheus/consoles

`sudo chown -R prometheus:prometheus /etc/prometheus/console_libraries`

### Configure Prometheus
Configure Prometheus yml:
`nano /etc/prometheus/prometheus.yml`

global:
  scrape_interval: 15s
scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:9090']
  - job_name: 'node_exporter'
    scrape_interval: 5s
    static_configs:
      - targets: ['node_exporter_1:1322','node_exporter_2:1322']

Change group of ownership
`sudo chown prometheus:prometheus /etc/prometheus/prometheus.yml`

Run Prometheus

sudo systemctl restart prometheus
sudo systemctl status prometheus

## Node Exporter

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

sudo wget https://github.com/prometheus/node_exporter/releases/download/v1.6.0/node_exporter-1.6.0.linux-amd64.tar.gz

`sudo tar -xzvf node_exporter-1.6.0.linux-amd64.tar.gz`

sudo cp node_exporter-1.6.0.linux-amd64/node_exporter /usr/local/bin/

`sudo chown node_exporter:node_exporter /usr/local/bin/node_exporter`

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

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

[Service]
User=node_exporter
Group=node_exporter
Type=simple
ExecStart=/usr/local/bin/node_exporter --web.listen-address=:1322

[Install]
WantedBy=multi-user.target  

ctrl+c and finish

sudo systemctl restart node_exporter

sudo systemctl status node_exporter