Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. It features a multi-dimensional data model and a powerful query language called PromQL, making it a robust solution for monitoring and alerting.
To install Prometheus on a Linux server, follow these steps:
tar xvfz prometheus-*.tar.gz
prometheus.yml file to configure your monitoring setup../prometheus --config.file=prometheus.yml
Here is an example of a basic prometheus.yml configuration:
global:
scrape_interval: 15s
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['localhost:9090']
Use PromQL to query your metrics. For example, to get the rate of HTTP requests:
rate(http_requests_total[5m])
Define alerting rules in the alert.rules file:
groups:
- name: example
rules:
- alert: HighRequestLatency
expr: job:request_latency_seconds:mean5m{job="myjob"} > 0.5
for: 10m
labels:
severity: page
annotations:
summary: "High request latency"
For more detailed information, visit the official documentation.
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