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Configure the DataDog agent using the Helm chart

Add Datadog helm repository

Code Block
helm repo add datadog https://helm.datadoghq.com helm repo update

Create datadog-values.yaml. For full values check here
Please refer to following the example of datadog-values.yaml

Code Block

logLevel: DEBUG
targetSystem: "linux"
datadog:
  apiKey: <api key>
  #Logs configurations
  logs:
    enabled: true
    containerCollectAll: true
    containerCollectUsingFiles: true
  
  #Plesse configure this setting based on your region
  site: datadoghq.eu
  
  # datadog.kubelet.tlsVerify should be `false` on kind and minikube
  # to establish communication with the kubelet
  kubelet:
    tlsVerify: false
  
clusterAgent:
  replicas: 2
  createPodDisruptionBudget: true

install Datadog agent using Helm

Code Block
helm install -f datadog-values.yaml <release name> datadog/datadog -n <namespace>

Verify installation and check the agent pod’s status
1. Code Block
  kubectl get pods
2. Also, check the agent’s log’s to confirm.

Install HiveMQ using Operator

The HiveMQ Kubernetes Operator provides seamless integration with the Prometheus Operator. Use the monitoring field to enable Prometheus and an associated Grafana dashboard. Metrics are exposed on port 9399.

Configure hivemq-values.yaml based on your requirement and then add podAnnotations for Datadog to auto-discover HiveMQ metrics. Check here for more details and configurations.

Please find below a minimalist config example of hivemq-values.yaml

Code Block

hivemq:
  image: hivemq/hivemq4:k8s-4.9.0
  imagePullPolicy: Always
  cpu: 8
  memory: 8Gi
  nodeCount: "2"

  podAnnotations:
        ad.datadoghq.com/hivemq.check_names: '[\"openmetrics\"]'
        ad.datadoghq.com/hivemq.init_configs: '[{}]'
        ad.datadoghq.com/hivemq.instances: |
          [
            {
              \"openmetrics_endpoint\": \"http://%%host%%:9399/metrics\",
              \"max_returned_metrics\": 10000,
              \"metrics\": [\".*\"]
            }
          ]
        ad.datadoghq.com/hivemq.logs: '[{\"source\":\"hivemq\",\"service\":\"hivemq-hivemq-mqtt\"}]'
  ports:
    - name: "mqtt"
      port: 1883
      expose: true
      patch:
        - '[{"op":"add","path":"/spec/selector/hivemq.com~1node-offline","value":"false"},{"op":"add","path":"/metadata/annotations","value":{"service.spec.externalTrafficPolicy":"Local"}}]'
    - name: "cc"
      port: 8080
      expose: true
      patch:
        - '[{"op":"add","path":"/spec/sessionAffinity","value":"ClientIP"}]'
    
monitoring:
  enabled: true
  dedicated: false

Install hivemq using the following command

Code Block
helm upgrade --install -f hivemq-values.yaml <release name> hivemq/hivemq-operator

verify installation
1. Code Block
  kubectl get pods
Login to your Datadog account and click “Metrics” =>” Explorer” from the left navigation links. You will be redirected to the “Graph your data” page. By default, you will see “system.cpu.user" metrics and their data.
Type com_hivemq in the search box and you should be able to see the list of available hivemq metrics.

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