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Prometheus for OpenTelemetry Collector

Instructions

Complete the Microservices Workshop or install the OpenTelemetry Collector on your k8s cluster

Easy Coralogix instructions for Complete Observability are here

Step 1 - Deploy the Prometheus example metric generators

From /workshops/workshops/otel/microservices/prometheus directory in repo: 

source deploy-prom-app.sh

Two deployments appear each generating random number gauges with metric names: prom1 and prom2

Step 2 - Prometheus Simple Receiver

  • (Prometheus Simple Receiver Docs) declares explicit targts for scraping metrics
  • Study the override file called override-prometheus-simple.yaml to understand how it works
  • Update the Cluster name and Domain to match your stack and deploy: 
source deploy-prom-simple.sh
  • You can now see metrics in Coralogix portal called prom1 and prom2
  • To restore original OpenTelemetry Collector config: 
helm rollback otel-coralogix-integration 1 (or your previous helm version)

Step 3 - Prometheus Autodiscovery ReceiverCreator

  • (Prometheus Auto ReceiverCreator Docs) uses various features of OpenTelmetry collector to create an autodiscovery set of receivers based on watching for changes in deployments. This will find all self declared Prometheus endpoints in deployments.
  • Study the override file called override-prometheus-auto.yaml to understand how it works
  • Update the Cluster name and Domain to match your stack and deploy: 
source deploy-prom-auto.sh
  • You can now see metrics in Coralogix portal called prom1 and prom2
  • To restore original OpenTelemetry Collector config: 
helm rollback otel-coralogix-integration 1 (or your previous helm version)
  • To delete the Prometheus metrics deployment:
source delete-prom-app.sh

Cleanup

Roll back to original Collector config: 

helm rollback otel-coralogix-integration 1 (or your previous helm version)

From: /workshops/workshops/otel/microservices/prometheus 

source delete-all.sh