Page Comparison

This article will guide you through the process of installing a Prometheus server in your Kubernetes cluster to monitor HiveMQ. We'll walk you through the steps to configure Prometheus to scrape metrics from HiveMQ, ensuring smooth and efficient monitoring.

...

1. Add the Prometheus repository to Helm:

   Code Block
   language bash
   helm repo add 'prometheus-community' 'https://prometheus-community.github.io/helm-charts' helm repo update

2. Get default values and save to the prometheus-values.yaml file:

   Code Block
   language bash
   helm show values prometheus-community/prometheus > prometheus-values.yaml

3. Open the prometheus-values.yaml file and disable unnecessary sub-charts by setting prometheus-pushgateway.enabled and alertmanager.enabled to false.

   Code Block
   language yaml
   prometheus-pushgateway: ## If false, pushgateway will not be installed ## enabled: false

   Code Block
   language yaml
   alertmanager: ## If false, alertmanager will not be installed ## enabled: false

4. Add a scrape job for HiveMQ: In the prometheus-values.yaml file, locate the prometheus.yml section, and add a new scraping job for HiveMQ:

   Code Block
   language yaml
   prometheus.yml: ... scrape_configs: ... ... - job_name: 'hivemq' scrape_interval: 5s metrics_path: '/metrics' static_configs: - targets: [ 'hivemq:9399' ]

5. Deploy Prometheus in your Kubernetes cluster using the updated configuration file:

   Code Block
   language bash
   helm upgrade 'prometheus' \ --install 'prometheus-community/prometheus' \ --values 'prometheus-values.yaml' \ --namespace 'hivemq-namespace'

6. You can access the Prometheus server within your cluster via port 80 using the following DNS name: prometheus-server.hivemq.svc.cluster.local
   To forward the port to the localhost:80, use the following command:

   Code Block
   language bash
   kubectl port-forward svc/prometheus-server 80:80

7. To expose the metrics endpoint for Prometheus, update your HiveMQ deployment with monitoring.enabled=true:

   Code Block
   language bash
   helm upgrade 'hivemq' --install 'hivemq/hivemq-operator' \ --values 'hivemq-values.yaml' \ --set 'monitoring.enabled=true' \ --namespace 'hivemq-namespace'

8. If the HiveMQ log is set at the DEBUG level, Prometheus’s activity can be verified:

   Code Block
   DEBUG - Received HTTP-Get-Request from Prometheus to scrape metrics from HiveMQ: Request(GET http://10.244.5.7:9399/metrics)@557cfc7a

In this article, we've outlined the steps to set up Prometheus in your Kubernetes cluster for monitoring HiveMQ. You've learned how to configure Prometheus, enable scraping for HiveMQ, and access the Prometheus server for effective monitoring of your HiveMQ deployment.

Tested with versions:

grafana/grafana 6.59.4 10.1.1

prometheus-community/prometheus 24.4.0 v2.47.0

hivemq/hivemq-operator 0.11.25 4.19.0

\uD83D\uDCCB Related articles