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KashifSaadat/kube-reserved-resources-debugging.sh

Created March 15, 2019 16:40
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Helpful debugging commands for Kube Reserved Resources & CGroups
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kube-reserved-resources-debugging.sh
# Query current usage for runtime, kubelet and pods
curl -s http://localhost:10255/stats/summary | jq .node.systemContainers
# Quick scan of the cgroup paths to see what does exist
ls -ld /sys/fs/cgroup/**/podruntime.slice
ls -ld /sys/fs/cgroup/**/system.slice
# Validate what cgroup a single process uses
cat /proc/$(pidof kubelet)/cgroup
# Recursively show the contents of a control group
systemd-cgls
# Show top control groups by their resource usage
systemd-cgtop
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