Step 1 - Download Kubernetes deploy manifest

Download the metricbeat kubernetes deploy manifest using the link below:

Click to download metricbeatbeat-kubernetes.yaml

Step 2 - Insert your stack details

Open the manifest and look for the environment variables controlling the logging destination. (Lines 110 and 236) We need to change environment variables on both lines 110 and 236 because Kubernetes runs a metricbeat instance on each node in the cluster. And also an additional single instance of Metricbeat to retrieve metrics for the cluster itself.

  value: "your-logstash-host"
- name: BEATS_PORT
  value: "your-port"
Step 3 - Default metrics enabled for Kubernetes module

Each module has its own configuration file where different metricsets can be enabled / disabled. Locate the metricbeatbeat-kubernetes.yaml configuration file you downloaded in step 1.

These are the default metricsets available for the kubernetes module. To enable or disable a metric simply comment or uncomment the line out.

- module: kubernetes
    - node
    - system
    - pod
    - container
    - volume
  period: 10s
  host: ${NODE_NAME}
  hosts: ["localhost:10255"]

There is also a system module enabled for the Kubernetes node, these are the default metricsets enabled. To enable or disable a metric simply comment or uncomment the line out.

- module: system
  period: 10s
    - cpu
    - load
    - memory
    - network
    - process
    - process_summary
    #- core
    #- diskio
    #- socket
  processes: ['.*']
    by_cpu: 5      # include top 5 processes by CPU
    by_memory: 5   # include top 5 processes by memory

The Kubernetes cluster also has some default metricsets available. Metricbeat requires kube-state-metrics to be deployed and running to gather the cluster metrics. Follow the Kuberenetes deployment docs to get this set-up.

- module: kubernetes
    - state_node
    - state_deployment
    - state_replicaset
    - state_pod
    - state_container
    # Uncomment this to get k8s events:
    #- event
  period: 10s
  host: ${NODE_NAME}
  hosts: ["kube-state-metrics:8080"]
Step 4 - Deploy your pod

Now your deployment manifest is updated, you can deploy it using.

kubectl apply -f metricbeat-kubernetes.yaml
Step 5 - Confirm the deployment has completed
kubectl --namespace=kube-system get ds/metricbeat

kubectl --namespace=kube-system get pods

You should see a pod for each kubernetes node with a name similar to metricbeat-abcde listed. The pods should work though from Pending to Running within a couple of minutes as the containers are downloaded and started.

Step 6 - Compatability

The Kubernetes module is tested with Kubernetes 1.8.0, 1.9.4 and 1.10.0.

Step 7 - Kubernetes module dashboard

The Kubernetes module comes with a predefined Kibana dashboard. To view your dashboards for any of your Logit stacks, launch Kibana and choose Dashboards.

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