How To Diagnose and Resolve PID Pressure Issues in Kubernetes

Identify kube nodes with PID pressure. For use by developers debugging PID pressure in Kubernetes

List nodes with PID pressure issues.

kubectl get node --selector=kubernetes.io/pid-pressure=true

Show top resource-consuming pods across all namespaces.

kubectl top pods --all-namespaces | sort --reverse --key 3 | head

Get detailed information about a specific node.

kubectl describe node <node_name>

Check CPU and memory usage of a specific process.

ps -o pid,ppid,%cpu,%mem,cmd ax | grep <process_pid>

Display PID information of a specific process.

cat /proc/<process_pid>/status | grep "Pid"

Show the maximum number of process IDs allowed.

cat /proc/sys/kernel/pid_max