Install & Setup Prometheus On Amazon Linux, CentOS & RHEL

Create a system user for Prometheus:

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

Create the directories in which we’ll be storing our configuration files and libraries:
```
 sudo mkdir /etc/prometheus
 sudo mkdir /var/lib/prometheus
```

Set the ownership of the /var/lib/prometheus directory:

 sudo chown prometheus:prometheus /var/lib/prometheus

Pull down the tar.gz file from the Prometheus downloads page:

 cd /tmp/
 wget https://github.com/prometheus/prometheus/releases/download/v2.49.1/prometheus-2.49.1.linux-amd64.tar.gz

Extract the files:

 tar -xvf prometheus-2.49.1.linux-amd64.tar.gz

Move the configuration file and set the owner to the prometheus user:

 cd prometheus-2.49.1.linux-amd64
 sudo mv console* /etc/prometheus
 sudo mv prometheus.yml /etc/prometheus
 sudo chown -R prometheus:prometheus /etc/prometheus

Move the binaries and set the owner:

 sudo mv prometheus /usr/local/bin/
 sudo mv promtool /usr/local/bin/
 sudo chown prometheus:prometheus /usr/local/bin/prometheus
 sudo chown prometheus:prometheus /usr/local/bin/promtool

Create the service file:

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

Add:

[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

Save and exit. (For VIM, press ESC, :, wq to save and exit.)

Reload systemd:
```
 sudo systemctl daemon-reload
```

Start Prometheus, and make sure it automatically starts on boot:

 sudo systemctl start prometheus
 sudo systemctl enable prometheus

Visit Prometheus in your web browser at PUBLICIP:9090

Install & Setup Prometheus On Amazon Linux, CentOS & RHEL

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