Monitoring all logstash replicas in K8s

[ArjonBu]

Hello,

Is it possible with the exporter to monitor all replicas of Logstash running in K8s?
On Prometheus metrics I cannot see more than one node.

Thanks in advance

[LHozzan]

Hi @ArjonBu .

By default this exporter watching just one instance. But in K8s you can "attach" it as a sidecar to Logstash pods. Deployment looking something like this:

...
spec:
  containers:
  - name: logstash
  (... setup for logstash ...)
  - name: exporter
    image: <PathToYourDockerContainerWithName>:<VersionForYourDockerContainer>
    args:
      - --web.listen-address=:9310 # by default is used port 9304, but feel free adapt this setting
    ports:
     - containerPort: 9310
       name: metrics
       protocol: TCP
    resources:
      requests:
        cpu: "100m"
        memory: "16M"
      limits:
        cpu: "200m"
        memory: "32M"
...

Please, take this just a example! You need also update K8s service object and servicemonitor object for Prometheus.

Hope that helps.