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A Cloud Guru

Installing Prometheus Pushgateway

The Prometheus pull model provides a highly resilient method for gathering metrics. However, there are a few cases where this model is not a good fit. Prometheus Pushgateway serves as a middleman, providing a push-based method for gathering metrics without compromising the simplicity of Prometheus server. In this lab, you will have the opportunity to install and configure your own Prometheus Pushgateway instance. This will give you some hands-on experience with the process of setting up Pushgateway.

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Path Info

Level

Intermediate

Duration

45m

Published

Jun 12, 2020

Challenge

Install and Run Pushgateway

Create a user and group for Pushgateway:

sudo useradd -M -r -s /bin/false pushgateway

Download and install the Pushgateway binary:

wget https://github.com/prometheus/pushgateway/releases/download/v1.2.0/pushgateway-1.2.0.linux-amd64.tar.gz

tar xvfz pushgateway-1.2.0.linux-amd64.tar.gz

sudo cp pushgateway-1.2.0.linux-amd64/pushgateway /usr/local/bin/

sudo chown pushgateway:pushgateway /usr/local/bin/pushgateway

Create a systemd unit file for Pushgateway:

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

[Unit]
Description=Prometheus Pushgateway
Wants=network-online.target
After=network-online.target

[Service]
User=pushgateway
Group=pushgateway
Type=simple
ExecStart=/usr/local/bin/pushgateway

[Install]
WantedBy=multi-user.target

Start and enable the pushgateway service:

sudo systemctl enable pushgateway

sudo systemctl start pushgateway

Verify the service is running and serving metrics:

sudo systemctl status pushgateway

curl localhost:9091/metrics

Challenge

Configure Pushgateway as a Scrape Target for Prometheus Server
1. Edit the Prometheus config:
```
sudo vi /etc/prometheus/prometheus.yml
```
2. Under the scrape_configs section, add a scrape configuration for Pushgateway. Be sure to set honor_labels: true:
```
- job_name: 'Pushgateway'
  honor_labels: true
  static_configs:
  - targets: ['localhost:9091']
```
3. Restart Prometheus to load the new configuration:
```
sudo systemctl restart prometheus
```
4. Use expression browser to verify you can see Pushgateway metrics in Prometheus. You can access expression browser in a web browser at http://<PROMETHEUS_SERVER_PUBLIC_IP>:9090.
5. Run a query to view some Pushgateway metric data:
```
pushgateway_build_info
```

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

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