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LAB 13.3: Adding tools for monitoring and metrics - Metrics API not available after 10+ minutes

juanalmaraz
juanalmaraz Posts: 2
in LFS258 Class Forum

I'm hands on with lab 13.3, at step 6 I've done everything with no issues (and I've already check twice every step); but in step 7 after 15 minutes waiting for a different output from the command "kubectl top pod" or "kubectl top nodes", I'm still getting the same:

error: Metrics API not available

Can anybody help me telling me if there is something missing in instructions?

Thank you in advance.

Comments

  • chrispokorni
    chrispokorni Posts: 1,419

    Hi @juanalmaraz,

    From your metrics-server deployment, can you provide the code snippet representing the container args and the image, similar to the snippet shown in Lab 13.3 step 5 of the lab guide? Typically typos in this section can cause issues with the metrics-server.

    Regards,
    -Chris

  • zmicier0k
    zmicier0k Posts: 5

    @chrispokorni I've got the same problem. This is the kubectl -n kube-system describe deployment metrics-server :

    Containers:
   metrics-server:
    Image:      k8s.gcr.io/metrics-server/metrics-server:v0.3.7
    Port:       4443/TCP
    Host Port:  0/TCP
    Args:
      --cert-dir=/tmp
      --secure-port=4443
      --kubelet-insecure-tls
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
  • chrispokorni
    chrispokorni Posts: 1,419

    Hi @zmicier0k,

    Since Kubernetes release v1.22 the metrics-server v0.3.x may no longer be compatible with latest releases. I would suggest installing the latest metrics-server release v0.6.x and at step 5 provide the following arguments when editing the metrics-server Deployment resource:

    - --kubelet-insecure-tls
- --kubelet-preferred-address-types=Hostname,InternalDNS,InternalIP,ExternalDNS,ExternalIP

    Regards,
    -Chris

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