kubectl-pyflame

Use pyflame to snapshot flame graph on running python pod in k8s cluster.

example svg file:

Install

wget https://raw.githubusercontent.com/monsterxx03/kube-pyflame/master/kubectl-pyflame

chmod +x kubectl-pyflame

mv kubectl-pyflame /usr/local/bin/

kubectl pyflame -h

Usage

kubctl pyflame -n <namespace> -p <pod_name> -m <python process match> -r <inspect rate> -s <inspect seconds>

svg file will be donwloaded to current dir.

Internal

Steps:

• find running node for target pod
• launch a pod with pyflame image on target node (to inspect process in another namespace, container is privileged, pod is set hostPID: true)
• list target process match -m option
• enter target pid
• pyflame do snapshot and output svg file
• download svg file to local
• delete debug pod