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Kafka header counter for prometheus

This simple script developed in order to count a specefic header values from kafka messages. For example, we are going to count the messages fetched by individual user IDs by twitter crawler.

Configurations

A sample config file provided in config.example.yml. It's required to mount a config file inside the cotainer with the name config.yml at /app/config.yml or provide the config file absoulte path with environment variable CONFIG_ADDRESS.

config example

## Required configs ##
## just name the service for exported descriptions
service: example_service
## counter name for exported metrics
counter_name: test_counter_name
## kafka topics to fetch messages from
topics:
  - test_topic_a
  - test_topic_b
## consumer group name of this exporter
consumer: test_consumer_group
## a list of kafka addresses with port
address:
  - kafka.example.com:9092
## header name to fetch data from it
header_fields:
  - test_header_field

## Optional configs ##
## timeouts in ms
timeout: 6000
## offset reset policy, can be earliest or latest
offset_reset: earliest
## exposed http server port for prometheus scraper
port: 80

Type

RESTful API

Source

Apache kafka

Output

Prometheus

Tests

Not developed yet

Deployment Notes

Hardware Requirements

  • Memory: 100 Mi - 128 Mi
  • CPU: 0.7 - 1
  • Storage: None