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.
Learning Objectives
Successfully complete this lab by achieving the following learning objectives:
- 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-worker1node preventing a pod from deploying.- 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:
tolerations: - key: node-role.kubernetes.io/master operator: Exists effect: NoSchedule
