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Troubleshooting Daemonsets in Kubernetes

You are a container engineer at Cube4Lyf, an e-gaming platform geared toward puzzle and logic games. Their Kubernetes cluster is not performing as expected. In order to improve visibility in their cluster, the team has asked you to install Prometheus on each node as a daemonset. However, not all Pods are deploying as expected. You've been asked to troubleshoot the issue and ensure the monitoring Pods are deployed on each node.

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Path Info

Clock icon Intermediate
Clock icon 45m
Clock icon Dec 16, 2021

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Table of Contents

  1. Challenge

    Identify the issue on the worker node preventing a pod from deploying to k8s-worker1.

    The lab has a logging daemonset deployed. It is not deploying pods to two of the three nodes. Identify the issue with the k8s-worker1 node preventing a pod from deploying.

  2. Challenge

    Identify the configuration issue that is preventing a Pod from deploying to the control plane node.

    The daemonset is not deploying a pod to the control plane node. Identify the issue in the daemonset configuration preventing it from doing so and update it accordingly.

    Tolerations spec block:

     - key:
       operator: Exists
       effect: NoSchedule

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