Answer: Prometheus is an open source analytics and time series database for collecting, storing and querying metrics from multiple sources.
Q2. What are the main features of Prometheus?
Answer: Some of the key features of Prometheus are:
- Multiple data models
- Powerful query (PromQL)
- Support for collecting time series data from multiple vendors
- Flexible reporting
- Easy integration with other tools and systems
Q3. What is a Time Series Database?
Answer: Time series databases are databases optimized for storing and querying time-stamped data such as measurements or events over time. Time series databases are used in many applications, including analytics, IoT, and finance.
Q4. How does Prometheus collect data?
Answer: Prometheus collects data from various sources through exporters. Exporters are small workers who work on a target and collect and display metrics in a Prometheus-compatible format. Prometheus can also retrieve metrics directly from services that display them in standard formats such as HTTP or SNMP.
Q5. What is a PromQL query?
Answer: PromQL is a query type used in Prometheus to query and manipulate time series data. PromQL supports many functions, including filtering, addition, and arithmetic operations.
Q6. What is writing in Prometheus?
Answer: Scripts are key partner links to metrics on Prometheus. Symbols are used to define and filter metrics and allow multivariate data to be created.
Q7. How does notification work in Prometheus?
Answer: Prometheus allows users to define notification rules based on parameter data. When alarm conditions are met, Prometheus triggers alerts and sends notifications via various methods such as email or PagerDuty.
Q8. What is the mining time in Prometheus?
Answer: A scrap time is when Prometheus collects data from the export or scrap target. The default interval is 1 minute but can be adjusted for specific needs.
Q9. Can you explain the role of suppliers at Prometheus?
Answer: Exporters are small workers working on the target collecting and displaying metrics in Prometheus over mode. Exporters allow Prometheus to collect data from multiple sources, including databases, web servers, and hardware devices.
Q10. How does Grafana integrate with Prometheus?
Answer: Grafana can be used as a front-end for Prometheus data visualization and analysis. Grafana provides a user-friendly interface for creating dashboards and visualizations from Prometheus data.