Enable Scheduler Container Logs to Track Pod Placement

Problem

There is a requirement to track down the scheduling of the pods in the PMK cluster. The pod scheduling is not logged in the container logs located at /var/log/containers by default.

Environment

• Platform9 Managed Kubernetes - All Versions
• Kube-Scheduler

Procedure

• Stop Hostagent and Nodeletd.

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systemctl stop pf9-{hostagent,nodeletd}

• Stop Nodelet Phases.

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/opt/pf9/nodelet/nodeletd phases stop

• Edit _ _/opt/pf9/pf9-kube/conf/masterconfig/base/<OS_NAME>/master.yaml on all the master nodes, setting the verbosity level to "--v=8" for the scheduler container command, e.g.

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- name: "kube-scheduler"

      image: "k8s.gcr.io/kube-scheduler:__KUBERNETES_VERSION__"

      command:

        - "kube-scheduler"

        - "--config=/srv/kubernetes/configs/kube-scheduler.yaml"

        - "--leader-elect=true"

        - "--profiling=false"

        - "--v=8"

• Start Hostagent

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systemctl start pf9-hostagent

• Verify the change

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ps -ef | grep -i kube-sched