mongo-prometheus

Connector from mongodb to prometheus client that is ready to be scraped.

Pre-requisite and requirement

• node > 8
• Make sure mongodb is installed
• Enable oplog to your mongo

Installation and Usage

Quickstart

• Install the module in your project directory

npm install mongo-prometheus

• Initialize the class with proper config and ETL function

const {MongoPrometheus} = require("mongo-prometheus");

const config = {
  database: "test",
  collection: "requests",
  job: "mongo-prometheus",
  defaultMetrics: true
};

const etl = (data, next) => {
  const record = {
    metric: "test_metric",
    value: data.total,
    type: "counter",
    label: "test"
  }
  next(null, record);
}

new MongoPrometheus(config, etl);

• Navigate to http://localhost:1337/metrics

Here are some more details explanation about the config.

• database: database of mongo to check oplog
• collection: collection of mongo to check oplog
• job: job as a label for prometheus scrape
• endpoint: Endpoint of the metrics for scraping. Default is /metrics
• port: Port of the metrics for scraping. Default is 3031
• defaultMetrics: Generate the default performance metrics. Default is false