Devops | Monitoring Tutorial | How to Install Prometheus | AWS Amazon Linux 2

Setup Prometheus Binaries
Step 1: Update the yum package repositories.

sudo yum update -y
Step 2: Go to official Prometheus downloads page and get the download link for Linux binary.
Step 3: Create a Prometheus user, required directories, and make prometheus user as the owner of those directories.
sudo useradd --no-create-home --shell /bin/false prometheus
sudo mkdir /etc/prometheus
sudo mkdir /var/lib/prometheus
sudo chown prometheus:prometheus /etc/prometheus
sudo chown prometheus:prometheus /var/lib/prometheus

Step 4: Download the source using curl, untar it and rename the extracted folder to prometheus-files.
https://github.com/prometheus/prometheus/releases/download/v2.18.1/prometheus-2.18.1.linux-amd64.tar.gz
curl -LO https://github.com/prometheus/prometheus/releases/download/v2.3.2/prometheus-2.3.2.linux-amd64.tar.gz
tar -xvf prometheus-2.3.2.linux-amd64.tar.gz
mv prometheus-2.18.1.linux-amd64 prometheus-files
Step 5: Copy prometheus and promtool binary from prometheus-files folder to /usr/local/bin and change the ownership to prometheus user.
sudo cp prometheus-files/prometheus /usr/local/bin/
sudo cp prometheus-files/promtool /usr/local/bin/
sudo chown prometheus:prometheus /usr/local/bin/prometheus
sudo chown prometheus:prometheus /usr/local/bin/promtool

Step 6: Move the consoles and console_libraries directories from prometheus-files to /etc/prometheus folder and change the ownership to prometheus user.

sudo cp -r prometheus-files/consoles /etc/prometheus
sudo cp -r prometheus-files/console_libraries /etc/prometheus
sudo chown -R prometheus:prometheus /etc/prometheus/consoles
sudo chown -R prometheus:prometheus /etc/prometheus/console_libraries

Setup Prometheus Configuration
All the prometheus configurations should be present in /etc/prometheus/prometheus.yml file.

Step 1: Create the prometheus.yml file.

sudo vi /etc/prometheus/prometheus.yml

Step 2: Copy the following contents to the prometheus.yml file.

global:
scrape_interval: 10s

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

Step 3: Change the ownership of the file to prometheus user.
sudo chown prometheus:prometheus /etc/prometheus/prometheus.yml

Setup Prometheus Service File
Step 1: Create a prometheus service file.

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

Step 2: Copy the following content to the file.

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

Setup Prometheus Service File
Step 1: Create a prometheus service file.

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

Step 2: Copy the following content to the file.

[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
Step 3: Reload the systemd service to register the prometheus service and start the prometheus service.

sudo systemctl daemon-reload
sudo systemctl start prometheus

Check the prometheus service status using the following command.

sudo systemctl status prometheus

Access Prometheus Web UI
Now you will be able to access the prometheus UI on 9090 port of the prometheus server.

http:ec2serverip:9090/graph
Right now we have just configured prometheus. You need to register the target in the prometheus.yml file to get the metrics from the source systems.

Видео Devops | Monitoring Tutorial | How to Install Prometheus | AWS Amazon Linux 2 канала Cloud Tech Masters