tests: Add kubernetes stability test

This PR adds a k8s stability test that will be part of the CoCo Kata
stability tests that will run weekly.

Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

tests/stability/kubernetes_stability.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+#
+# Copyright (c) 2024 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+set -o pipefail
+set -x
+
+SCRIPT_PATH=$(dirname "$(readlink -f "$0")")
+source "${SCRIPT_PATH}/../metrics/lib/common.bash"
+
+# Timeout is the duration of this test (seconds)
+timeout=3600
+start_time=$(date +%s)
+end_time=$((start_time+timeout))
+
+
+function main() {
+	# Check no processes are left behind
+	check_processes
+
+	# Create pod
+	kubectl create -f "${SCRIPT_PATH}/runtimeclass_workloads/stability-test.yaml"
+	# Verify pod is running
+	pod_name="stability-test"
+	kubectl wait --for=condition=Ready --timeout=30s pod "${pod_name}"
+
+	echo "Running kubernetes stability test"
+	count=0
+	while [[ "${end_time}" > $(date +%s) ]]; do
+		echo "This is the number of iterations $count"
+		count=$((count+1))
+
+		cmd1="echo 'hello world' > file"
+		kubectl exec "${pod_name}" -- /bin/bash -c "${cmd1}"
+
+		cmd2="rm -rf /file"
+		kubectl exec "${pod_name}" -- /bin/bash -c "${cmd2}"
+
+		cmd3="touch /tmp/execWorks"
+		kubectl exec "${pod_name}" -- /bin/bash -c "${cmd3}"
+
+		cmd4="ls /tmp | grep execWorks"
+		kubectl exec "${pod_name}" -- /bin/bash -c "${cmd4}"
+
+		cmd5="rm -rf /tmp/execWorks"
+		kubectl exec "${pod_name}" -- /bin/bash -c "${cmd5}"
+	done
+
+	kubectl delete -f "${SCRIPT_PATH}/runtimeclass_workloads/stability-test.yaml"
+}
+
+main "$@"

tests/stability/runtimeclass_workloads/stability-test.yaml

@@ -0,0 +1,16 @@
+#
+# Copyright (c) 2024 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+apiVersion: v1
+kind: Pod
+metadata:
+  name: stability-test
+spec:
+  terminationGracePeriodSeconds: 0
+  runtimeClassName: kata
+  containers:
+  - name: stability-test
+    image: quay.io/bedrock/ubuntu:latest
+    command: ["/bin/sh", "-c", "tail -f /dev/null"]